IP Library › Granted Patent US 12,258,462
Granted Patent B2
US 12,258,462 · App. 17/179,080 · Granted Mar 25, 2025

Composition made from poly(arylene-ether-ketone) (PAEK) which is stable in the molten state and method for stabilizing such a composition

Inventors: Guillaume Le (Herouville Saint Clair, FR); Philippe Bussi (Colombes, FR)
Assignee: ARKEMA FRANCE
C08K3/32C08G65/40C08G65/4012C08K5/521C08L71/00C08G2650/40C08K2003/322C08K2003/324C08L2201/08C08L2205/025
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Quick Facts
Patent No.
US 12,258,462
App. No.
17/179,080
Granted
Mar 25, 2025
Kind
B2
Abstract

A composition based on poly(arylene ether ketone) (PAEK) which is stable in the molten state, characterized in that it includes a phosphate salt or a mixture of phosphate salts, a process for the stabilization of a composition based on PAEK incorporating said phosphate salts and objects manufactured using the composition.

Claims (35)

1. A composition based on poly(arylene ether ketone) (PAEK) which is stable in the molten state under nitrogen and under air with regard to thermal oxidation,

wherein the composition comprises a mixture of phosphate salts, wherein the mixture of phosphate salts comprises a first phosphate salt chosen among: anhydrous monosodium phosphate, monosodium phosphate monohydrate and monosodium phosphate dihydrate, and a second phosphate salt chosen among anhydrous disodium phosphate, disodium phosphate dihydrate, disodium phosphate heptahydrate, disodium phosphate octahydrate and disodium phosphate dodecahydrate,

wherein the proportions of phosphate salts in the composition are between 100 ppm and 5000 ppm,

wherein composition does not comprise any phosphite and/or any phosphonate.

2. The composition as claimed in claim 1 , wherein the composition based on PAEK is a composition based on one of the following polymers: PEKK, PEEK, PEEKK, PEKEKK, PEEEK or PEDEK.

3. The composition as claimed in claim 1 , wherein the composition based on PAEK is a poly(ether ketone ketone) (PEKK) composition.

4. The composition as claimed in claim 3 , wherein the composition based on PAEK is a composition based on PEKK, and comprises, in addition to the PEKK, at least one of the following polymers: PEK, PEEKEK, PEEK, PEEKK, PEKEKK, PEEEK, PEDEK, with a content of less than 50% by weight of the composition.

5. The composition as claimed in claim 1 , wherein the composition further comprises at least one filler and/or at least one other additive.

6. The composition as claimed claim 1 , wherein the mixture of phosphate salts, also acts as nucleating agent within said composition.

7. The composition as claimed in claim 1 , wherein the percentage change in the viscosity, measured in a molten state, under air, with an oscillation frequency of 0.1 Hz, and with a strain amplitude of 0.5% is lower than the one of said composition without the mixture of phosphate salts.

8. The composition as claimed in claim 1 , wherein the mixture of phosphate salts is water-soluble.

9. The composition as claimed in claim 8 , wherein the mixture of phosphate salts have been incorporated in the composition by wet impregnation of an aqueous solution thereof.

10. The composition as claimed in claim 1 , wherein the mixture of phosphate salts have been incorporated by compounding.

11. A composition based on poly(arylene ether ketone) (PAEK) which is stable in the molten state under nitrogen and under air with regard to thermal oxidation, wherein the composition comprises a mixture of phosphate salts,

wherein the proportions of phosphate salts in the composition are between 100 ppm and 5000 ppm,

wherein composition does not comprise any phosphite and/or any phosphonate,

wherein the mixture of phosphate salts comprises anhydrous monosodium phosphate and anhydrous disodium phosphate.

12. The composition as claimed in claim 1 , wherein composition is stable at a temperature of greater than 350° C.

13. An object manufactured by a technology chosen from laser sintering, fused deposition modeling, molding, injection molding, extrusion, thermoforming, rotational molding, compression molding, compounding or impregnation, using a composition as claimed in claim 1 .

14. The composition as claimed in claim 1 , in the form of granules or in the form of a powder.

15. The composition as claimed in claim 1 , wherein the mixture of phosphate salts is incorporated during a synthesis process of the PAEK.

16. A composition based on poly(arylene ether ketone) (PAEK) which is stable in the molten state under nitrogen and under air with regard to thermal oxidation, wherein the composition comprises a mixture of phosphate salts,

wherein the proportions of phosphate salts in the composition are between 100 ppm and 5000 ppm,

wherein composition does not comprise any phosphite and/or any phosphonate,

wherein the composition based on PAEK is a poly(ether ketone ketone) (PEKK) composition,

wherein the mixture of phosphate salts comprises anhydrous monosodium phosphate and anhydrous disodium phosphate.

17. The composition as claimed in claim 3 , wherein the composition further comprises at least one filler and/or at least one other additive.

18. The composition as claimed claim 3 , wherein the mixture of phosphate salts also acts as nucleating agent within said composition.

19. The composition as claimed in claim 3 , wherein the percentage change in the viscosity, measured in a molten state, under air, with an oscillation frequency of 0.1 Hz, and with a strain amplitude of 0.5% is lower than the one of said composition without the mixture of phosphate salts.

20. The composition as claimed in claim 3 , wherein the mixture of phosphate salts is water-soluble.

21. The composition as claimed in claim 20 , wherein the mixture of phosphate salts have been incorporated in the composition by wet impregnation of an aqueous solution thereof.

22. The composition as claimed in claim 3 , wherein the mixture of phosphate salts have been incorporated by compounding.

23. The composition as claimed in claim 3 , wherein the mixture of phosphate salts is incorporated during a synthesis process of the PAEK.

24. The composition as claimed in claim 3 , wherein composition is stable at a temperature of greater than 350° C.

25. The composition as claimed in claim 3 , in the form of granules or in the form of a powder.

Assignments (2)
CHANGE OF ADDRESS Recorded Jul 4, 2025
From: ARKEMA FRANCE
To: ARKEMA FRANCE
Reel/Frame 071814/0739 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 18, 2021
From: LE, GUILLAUME; BUSSI, PHILIPPE
To: ARKEMA FRANCE
Reel/Frame 057208/0700 →
Priority Claims (1)
FR 1556931 · Jul 22, 2015 · national
Continuity (4)
Continuation In Part 17012331 · Sep 4, 2020
Continuation 15746131 · Jan 19, 2018
Continuation 15746142
Related Publication 20210171732A1 · Jun 10, 2021
References Cited (174)
US 3794615A · Beverly · 1974 [cited by applicant]
US 3925307A · Dahl et al. · 1975 [cited by applicant]
US 4567029A · Wilson et al. · 1986 [cited by applicant]
US 4593061A · Vogdes et al. · 1986 [cited by applicant]
US 4609714A · Harris et al. · 1986 [cited by applicant]
US 4874839A · Montoya et al. · 1989 [cited by applicant]
US 4977230A · Nozawa et al. · 1990 [cited by applicant]
US 5063265A · Harris · 1991 [cited by applicant]
US 5145894A · Koch et al. · 1992 [cited by applicant]
US 5208278A · Koch et al. · 1993 [cited by applicant]
US 5726232A · Egami et al. · 1998 [cited by applicant]
US 9879127B2 · Mii et al. · 2018 [cited by applicant]
US 10988596B2 · Le · 2021 [cited by examiner]
US 20040157967A1 · Ito · 2004 [cited by applicant]
US 20060052479A1 · Cougoulic · 2006 [cited by applicant]
US 20070082986A1 · Peters et al. · 2007 [cited by applicant]
US 20070265415A1 · Richter et al. · 2007 [cited by applicant]
US 20100028702A1 · Pierini et al. · 2010 [cited by applicant]
US 20100222486A1 · Toyohara et al. · 2010 [cited by applicant]
US 20110045087A1 · Kerr et al. · 2011 [cited by applicant]
US 20110104417A1 · Wang et al. · 2011 [cited by applicant]
US 20110151259A1 · Jarman-Smith et al. · 2011 [cited by applicant]
US 20110160364A1 · Toyohara et al. · 2011 [cited by applicant]
US 20130281587A1 · Shim et al. · 2013 [cited by applicant]
US 20160297929A1 · Zhang · 2016 [cited by applicant]
US 20180201759A1 · Le et al. · 2018 [cited by applicant]
US 20180208741A1 · Le et al. · 2018 [cited by applicant]
CN 1687201A · 2005 [cited by applicant]
CN 101864162A · 2010 [cited by applicant]
CN 102089360A · 2011 [cited by applicant]
CN 103665368A · 2014 [cited by applicant]
DE 4207555A1 · 1993 [cited by applicant]
EP 0132708A2 · 1985 [cited by applicant]
EP 0308803A2 · 1989 [cited by applicant]
EP 0933395A2 · 1999 [cited by applicant]
EP 1209190A1 · 2002 [cited by applicant]
EP 1209190B1 · 2006 [cited by applicant]
EP 2169012A1 · 2010 [cited by applicant]
FR 3039157A1 · 2017 [cited by applicant]
GB 1446962A · 1976 [cited by applicant]
GB 2261667A · 1993 [cited by applicant]
JP S61225248A · 1986 [cited by applicant]
JP H01104650A · 1989 [cited by applicant]
JP H03227320A · 1991 [cited by applicant]
JP H04500088A · 1992 [cited by applicant]
JP H04110339A · 1992 [cited by applicant]
JP H08259765A · 1996 [cited by applicant]
JP 2000169738A · 2000 [cited by applicant]
JP 2001059040A · 2001 [cited by applicant]
JP 2008050583A · 2008 [cited by applicant]
JP 2009511665A · 2009 [cited by applicant]
JP 4420417B2 · 2009 [cited by applicant]
JP 2011511128A · 2011 [cited by applicant]
JP 2016538399A · 2016 [cited by applicant]
JP 2001055395A · 2021 [cited by applicant]
KR 940000658B1 · 1994 [cited by applicant]
KR 1020120104982A · 2012 [cited by applicant]
WO 9001510A1 · 1990 [cited by applicant]
WO 9210542A1 · 1992 [cited by applicant]
WO 9531502A1 · 1995 [cited by applicant]
WO 2013114652A1 · 2013 [cited by applicant]
WO 2013164855A2 · 2013 [cited by applicant]
WO 2014148519A1 · 2014 [cited by applicant]
WO 2015078330A1 · 2015 [cited by applicant]
WO 2017013369A1 · 2017 [cited by applicant]
Notification of Opposition issued by the European Patent Office on Jul. 20, 2021 in European Patent Application 16757296.5-1107, (Arkema France), (25 pages). [cited by applicant]
Notification of Opposition issued by the European Patent Office on Jul. 16, 2021 in European Patent Application 16757296.5-1107, (Arkema France), (57 pages). [cited by applicant]
English Translation of JP H3-227320, previously cited on Feb. 18, 2021, 18 pages. [cited by applicant]
Kausch, “Advanced Thermoplastic Composites—Characterization and Processing”, 4 pages. [cited by applicant]
M.Vaezi, et al.“A novel bioactive PEEK/HA composite with Controlled 3D interconnected HA network”, 2015, 12 pages. [cited by applicant]
Hydroxylapatit (Wikipedia), 8 pages. [cited by applicant]
Ya-Wei Du et al. “Physical modification of polyetheretherketone D4 for orthopedic implants”, 2014,Front. Mater. Sci., vol. 8, No. 4, pp. 313-324. [cited by applicant]
Heyden. H. (Silico-)Aluminophosphates: Synthesis and D7 Application for Heat Storage and Transformation, 2008, 245 pages. [cited by applicant]
Furio Cora et al.,“Ionicity and Framework Stability of Crystalline D8 Aluminophosphates”, J. Phys. Chem. B 2001, vol. 105, pp. 10278-10281. [cited by applicant]
Aluminum phosphate (Wikipedia), 4 pages. [cited by applicant]
Phosphoric acid, aluminum sait (3:2)—PubChem, 2006, 1 page. [cited by applicant]
Natriumtrimetaphosphat (Wikipedia), 3 pages. [cited by applicant]
Metallorganische Chemie (Wikipedia), 4 pages. [cited by applicant]
Organometallic compounds (IUPAC Compendium of Chemical D14 Terminoloç:iv), 2014, 1 page. [cited by applicant]
Declaration (Affidavit) executed by Dr. James Pratte on Jun. 21, 2021, 2 pages. [cited by applicant]
Declaration (Affidavit) executed by Dr. Chantal Louis on Jun. 28, 2021, 5 pages. [cited by applicant]
E1_Rallis cert lot 207 for use in Lamart film run, Ceritficate of Analysis dated Mar. 24, 2009 of PEKK 60:40 DS-E Hi Purity Stabilized Grade, Lot 207/09, emitted by Rallis India Ltd. 2 pages. [cited by applicant]
E2_lot 207 used in ininity melt filtered, DS-E.pdf, email dated Oct. 13, 2009 from B. Tattersall to J. Banes re: DS-E pellets from Infinity to Ajedium, 3 pages. [cited by applicant]
E3_Ajedium film run sheet with infinity, lot 10091845.pdf, Ajedium Films run sheet dated May 10, 2009 relating to Shop Order# 09278-1, 2 pages. [cited by applicant]
E4_Ajedium film invoice using lot, 207.pdf, Ajedium Films invoice to Cyetc Engineered Materials Inc. dated Jun. 10, 2009 referring to Shop Order# 09278-1, 1 pages. [cited by applicant]
E5_Lamart PO acknowledgement, from Cytec for Cypek DS-E film.pdf, Purchase Order dated Sep. 14, 2009 from Lamart Corporation to Cytec, Engineered Materials Inc. for PEKK DS-E films. 5 pages. [cited by applicant]
E6_Ajedium packing list of shipping, Packing slips relating to shipments of PEKK DS-E films from Ajedium Films to Lamart Corporation according to Cytec sales order, 3 pages. [cited by applicant]
Decision of Rejection (Office Action) mailed Aug. 3, 2020 by the Japan Patent Office, JP Patent Application No. 2018-503131, 7 pages including English-language translation. [cited by applicant]
International Search Report (PCT/ISA/210) and Written Opinion (PCT/ISA/237) mailed on Oct. 27, 2016, by the European Patent Office as the International Searching Authority for International Application No. PCT/FR2016/05… [cited by applicant]
International Search Report (PCT/ISA/210) with English translation and Written Opinion (PCT/ISA/237) mailed on Oct. 27, 2016, by the European Patent Office as the International Searching Authority for International Appl… [cited by applicant]
Notice of Grounds for Rejection (Office Action) issued by The Korean Intellectual Property Office in Korean Patent Application No. 10-2018-7005000, Jan. 28, 2020, 7 pages. [cited by applicant]
Notice of Grounds for Rejection (Office Action) issued by The Korean Intellectual Property Office in Korean Patent Application No. 10-2018-7005001, Jan. 28, 2020, 9 pages. [cited by applicant]
Notice of Reasons for Rejection (Office Action) issued Dec. 19, 2019 by the Japan Patent Office in Japanese Patent Application No. 2018-503131, 12 pages including English-language translation. [cited by applicant]
Official Action issued May 29, 2019 by the Korean Intellectual Property Office in Korean Patent Application No. 10-2018-7005001, 12 pages including English-language translation. [cited by applicant]
Official Action issued May 29, 2019 by the Korean Intellectual Property Office, in Korean Patent Application No. 10-2018-7005000, 12 pages including English-language translation. [cited by applicant]
Official Action issued Mar. 31, 2020 by the National Intellectual Property Administration of the People's Republic of China in Chinese Patent Application No. 201680042852.4, 6 pages. [cited by applicant]
Christie, D.M., et al., “Structural properties of a-berlinite (AIP04)”, Physics and Chemistry of Minerals, vol. 25 , pp. 222-226. [cited by applicant]
Flanigen, Edith M., et al., “Aluminophosphate molecular sieves and the periodic table”, Pure & Appl. Chem., vol. 58, No. 10, 1986, pp. 1351-1358. [cited by applicant]
Ho, K.K.C., et al., “Wet Impregnation as route to unidirectional carbon fibre reinforced thermoplastic composites manufacturing”, Plastics, Rubber and Composites, 2011, vol. 40, No. 2, pp. 100-107, Maney Publishing, Eng… [cited by applicant]
Le, Guillaume, et al., “Composition Made from Poly(arylene-ether-ketone) (PAEK) Stable in a Molten State”, U.S. Appl. No. 17/012,331 entitled “Composition Made from Poly(arylene-ether-ketone) (PAEK) Stable in a Molten S… [cited by applicant]
Luan, Z., et al., “Tubular aluminophosphate mesoporous materials containing framework silicon vanadium and manganese”, Mesoporous molecular sieves 1998: proceedings of the first international symposium, p. 103. [cited by applicant]
Notice of Opposition with Exhibits 1-9, filed in corresponding Japanese Patent No. 6,824,956 166 pages. [cited by applicant]
First Notice Reasons for Revocation from Opposition in corresponding Japanese Patent No. 6,824,956, dated Dec. 2, 2021, 15 pages (English translation only). [cited by applicant]
Second Notice Reasons for Revocation from Opposition in corresponding Japanese Patent No. 6,824,956, dated Sep. 9, 2022, 22 pages (English translation only). [cited by applicant]
Third Notice Reasons for Revocation from Opposition in corresponding Japanese Patent No. 6,824,956, dated Jul. 5, 2023, 26 pages (English translation only). [cited by applicant]
Exhibit 10—Su et al., “The assessment of fire suppression capability for the ammonium dihydrogen phosphate dry powder of commercial fire extinguishers,” Pocedia Engineering 84, 2014, p. 485-490—filed in Opposition in co… [cited by applicant]
Exhibit 11—Experimental Results—filed in Opposition in corresponding Japanese Patent No. 6,824,956, dated Mar. 1, 2023, 5 pages. [cited by applicant]
D42—Experimental Report—Opposition in European Patent Application No. 16757296.5-1107, dated Dec. 6, 2021, 1 page. [cited by applicant]
D41—Auerbach, Handbook of Zeolite Science and Technology, 2003, 2 pages—Opposition in European Patent Application No. 16757296.5-1107. [cited by applicant]
D40—Rouquerol, Properties of Some Novel Absorbents, 1995, 2 pages—Opposition in European Patent Application No. 16757296.5-1107. [cited by applicant]
D43—Experimental Report—Opposition in European Patent Application No. 16757296.5-1107, dated Jun. 23, 2022, 3 pages. [cited by applicant]
D44'—Declaration of Jame Pratte—Opposition in European Patent Application No. 16757296.5-1107, dated Jan. 10, 2023, 2 pages. [cited by applicant]
D44—Experimental Report—Opposition in European Patent Application No. 16757296.5-1107, dated Jan. 10, 2023, 2 pages. [cited by applicant]
D45—Declaration of Chantal Louis—Opposition in European Patent Application No. 16757296.5-1107, dated Jan. 10, 2023, 5 pages. [cited by applicant]
Submission by Evonik—Opposition in European Patent Application No. 16757296.5-1107, dated Jan. 9, 2023, 16 pages. [cited by applicant]
Submission by Solvay—Opposition in European Patent Application No. 16757296.5-1107, dated Jan. 9, 2023, 11 pages. [cited by applicant]
Submission by Evonik—Opposition in European Patent Application No. 16757296.5-1107, dated Apr. 5, 2023, 4 pages. [cited by applicant]
D47—Experimental Report—Opposition in European Patent Application No. 16757296.5-1107, dated Jul. 8, 2023, 1 page. [cited by applicant]
Submission by Arkema—Opposition in European Patent Application No. 16757296.5-1107, dated Jul. 7, 2023, 11 pages. [cited by applicant]
Submission by Arkema—Opposition in European Patent Application No. 16757296.5-1107, dated Jan. 9, 2023, 9 pages. [cited by applicant]
Exhibit 12—Declaration by Dr. Kishagen—filed in Opposition in corresponding Japanese Patent No. 6,824,956, dated Mar. 1, 2023, 2 pages. [cited by applicant]
Written Submission in corresponding (Second) Indian Patent Application No. 201817001115, dated Oct. 1, 2018, 6 pages. [cited by applicant]
Hearing Notice in corresponding (Second) Indian Patent Application No. 201817001115, dated Jul. 3, 2021, 3 pages. [cited by applicant]
Affidavit of Guillaume LE in corresponding (First) Indian Patent Application No. 201817001105, dated Mar. 28, 2022, 4 pages. [cited by applicant]
Hearing Notice in corresponding (First) Indian Patent Application No. 201817001105, dated Jan. 4, 2022, 2 pages. [cited by applicant]
Written Submission in corresponding (First) Indian Patent Application No. 201817001105, dated Apr. 26, 2022, 9 pages. [cited by applicant]
Examination Report in corresponding (First) Indian Patent Application No. 201817001105, dated Mar. 9, 2020, 5 pages. [cited by applicant]
English Version of the Administrative Nullity Request (ANR) in Brazilian Patent Application No. BR 112018000895-8, published in Brazilian Industrial Property Journal (RPI) 2686, of Jun. 28, 2021, 26 pages. [cited by applicant]
Administrative nullity of patent of invention, utility model or certificate of addition of invention n Brazilian Patent Application No. BR 112018000895-8, on Jun. 20, 2023, 57 pages (English machine translation only). [cited by applicant]
Decision to grant a European patent received for European Application No. 16757296.5, mailed on Sep. 17, 2020, 2 pages. [cited by applicant]
Decision to Grant received for Japanese Patent Application No. 2018-503131, mailed on Jan. 4, 2021, 5 pages (2 pages of English Translation and 3 pages of Original Document). [cited by applicant]
Decision to Grant received for Japanese Patent Application No. 2018-503135, mailed on Dec. 2, 2019, 5 pages (2 pages of English Translation and 3 pages of Original Document). [cited by applicant]
Decision to Grant received for Japanese Patent Application No. 2020-200166, mailed on Jan. 30, 2023, 5 pages (2 pages of English Translation and 3 pages of Original Document). [cited by applicant]
European Search Report and Search Opinion received for European Application No. 20200205.1, mailed on Nov. 20, 2020, 7 pages. [cited by applicant]
Intention to Grant received for European Application No. 16757296.5, mailed on Jul. 14, 2020, 6 pages. [cited by applicant]
International Preliminary Report on Patentability received for PCT Patent Application No. PCT/FR16/051894, mailed on Feb. 1, 2018, 16 pages (9 pages of English Translation and 7 pages of Original Document). [cited by applicant]
International Preliminary Report on Patentability received for PCT Patent Application No. PCT/FR16/051895, mailed on Feb. 1, 2018, 16 pages (9 pages of English Translation and 7 pages of Original Document). [cited by applicant]
Notice of Allowance received for Chinese Patent Application No. 201680042844.X, mailed on Apr. 1, 2020, 4 pages (2 pages of English Translation and 2 pages of Original Document). [cited by applicant]
Notice of Allowance received for Chinese Patent Application No. 201680042852.4, mailed on Feb. 8, 2021, 3 pages (2 pages of English Translation and 1 page of Original Document). [cited by applicant]
Notice of Allowance received for Korean Patent Application No. 10-2018-7005000, mailed on Jul. 7, 2020, 4 pages (2 pages of English Translation and 2 pages of Original Document). [cited by applicant]
Notice of Allowance received for Korean Patent Application No. 10-2018-7005001, mailed on Jul. 7, 2020, 9 pages (2 pages of English Translation and 2 pages of Original Document). [cited by applicant]
Office Action received for Chinese Patent Application No. 201680042844.X, mailed on Aug. 8, 2019, 10 pages (5 pages of English Translation and 5 pages of Original Document). [cited by applicant]
Office Action received for Chinese Patent Application No. 201680042852.4, mailed on Jul. 31, 2019, 11 pages (6 pages of English Translation and 5 pages of Original Document). [cited by applicant]
Office Action received for European Application No. 16757296.5, mailed on Jan. 17, 2020, 5 pages. [cited by applicant]
Office Action received for European Application No. 16757297.3, mailed on Feb. 23, 2022, 5 pages. [cited by applicant]
Office Action received for Japanese Patent Application No. 2020-200166, mailed on Jan. 11, 2022, 6 pages (3 pages of English Translation and 3 pages of Original Document). [cited by applicant]
Office Action received for Japanese Patent Application No. 2020-200166, mailed on Jul. 25, 2022, 6 pages (3 pages of English Translation and 3 pages of Original Document). [cited by applicant]
Diacel Evonik, Vestakeep (Registered), Exhibit No. 5, 2007, 32 pages. [cited by applicant]
Evonik Industries, “Information for product inclusion in the SAP EHS system and the Creation of a safety data sheet”, Exhibit No. 6, Oct. 7, 2008, 3 pages. [cited by applicant]
Evonik Industries, Exhibit No. 9, Jan. 19, 2023, 4 pages. [cited by applicant]
Evonik Industries, Vesakeep (Registered), Exhibit No. 7, 2008, 3 pages. [cited by applicant]
Intention to Grant received for European Application No. 16757297.3, mailed on Jan. 22, 2024, 7 pages. [cited by applicant]
Kausch., H. H., et al., “Advanced Thermoplastic Composites”, Characterization and Processing, Aug. 31, 2021, 30 pages. [cited by applicant]
Notice of Opposition received for Japanese Patent Application No. 2020-200166, mailed on Sep. 12, 2023, 56 pages of Original document only. [cited by applicant]
Office Action received for Chinese Patent Application No. 202110270228.2, mailed on Feb. 24, 2023, 14 pages (8 pages of English Translation and 6 pages of Original Document). [cited by applicant]
Office Action received for Chinese Patent Application No. 202110270228.2, mailed on Nov. 8, 2023, 20 pages (11 pages of English Translation and 9 pages of Original Document). [cited by applicant]
Office Action received for European Application No. 20200205.1, mailed on Jan. 11, 2024, 5 pages. [cited by applicant]
Production of PEEK in a 2L reactor, Exhibit No. 8, Dec. 9, 2022, 12 pages. [cited by applicant]
Zhao, Y., et al., “ Oilfield Chemistry”, Binzhou Polytechnic University Press, Jan. 31, 2016. [cited by applicant]
Intermediate Opinion in Opposition Proceeding in Brazil for corresponding BR Patent 112018000895-8 B1 (English translation only). [cited by applicant]
Oilfield Chemistry, Zhao Yang, et al., Harbin Institute of Technology Press, p. 303, Jan. 31, 2016, 3 pages (relevance according to Official Action in corresponding Chinese Application No. 202110270228.2). [cited by applicant]
Official Action in corresponding Chinese Application No. 202110270228.2, mailed Nov. 8, 2023, 20 pages. [cited by applicant]
Exhibit 13 in Japanese Opposition No. 2021-700760 for Japanese Patent No. 6824956, 6 pages. [cited by applicant]
Notice of Reasons for Invalidation in Japanese Opposition No. 2021-700760 for Japanese Patent No. 6824956, mailed Jan. 16, 2014 (translation only), 26 Pages. [cited by applicant]
Preliminary Opinion of the Opposition Division, mailed on Nov. 30, 2023, by the European Patent Office for European Patent Application No. 16757296.5, 24 pages. [cited by applicant]
A. Jonas et al., Chapter 2, “PEEK Degradation and Its Influence on Crystallization Kinetics”, Advanced Thermoplastic Composites: Characterization and Processing, Hanser Publishers, 1993, p. 57-81. [cited by applicant]
Notice of Reasons for Rejection, mailed on Apr. 15, 2024, by the Japanese Patent Office for Japanese Application No. 2023-030972, 6 pages. [cited by applicant]
D48—Experimental Report by Evonik—Opposition in European Patent Application No. 16757296.5-1107, submitted on Aug. 26, 2024, 8 pages (with translation). [cited by applicant]
Observations by Evonik—Opposition in European Patent Application No. 16757296.5-1107, submitted on Aug. 26, 2024, 30 pages (with translation). [cited by applicant]
D49—Evidence by Arkema—Opposition in European Patent Application No. 16757296.5-1107, submitted on Aug. 28, 2024, 3 pages. [cited by applicant]
D50—Evidence by Arkema—Opposition in European Patent Application No. 16757296.5-1107, submitted on Aug. 28, 2024, 2 pages. [cited by applicant]
D51—Evidence by Arkema—Opposition in European Patent Application No. 16757296.5-1107, submitted on Aug. 28, 2024, 3 pages. [cited by applicant]
Written Submission by Arkema—Opposition in European Patent Application No. 16757296.5-1107, submitted on Aug. 28, 2024, 12 pages (with translation). [cited by applicant]
Observations by Solvay—Opposition in European Patent Application No. 16757296.5-1107, submitted on Aug. 29, 2024, 15 pages. [cited by applicant]