IP Library › Granted Patent US 12,714,968
Granted Patent B2
US 12,714,968 · App. 18/643,366 · Granted Aug 25, 2026

System and method for separating a gas mixture

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Quick Facts
Patent No.
US 12,714,968
App. No.
18/643,366
Granted
Aug 25, 2026
Kind
B2
Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 14, 2026
From: ROODBEEN, J.E.
To: HAFFMANS B.V.
Reel/Frame 074662/0443 →
Continuity (4)
Continuation 18047287 · Oct 18, 2022
Continuation 16788912 · Feb 12, 2020
Provisional Application 62804338 · Feb 12, 2019
Related Publication 20240269609A1 · Aug 15, 2024
References Cited (163)
US 1008632A · Fenlason · 1911 [cited by applicant]
US 3534528A · James · 1970 [cited by applicant]
US 3713271A · Franz et al. · 1973 [cited by applicant]
US 4119417A · Heki et al. · 1978 [cited by applicant]
US 4130403A · Cooley et al. · 1978 [cited by applicant]
US 4140499A · Ozaki et al. · 1979 [cited by applicant]
US 4264338A · Null · 1981 [cited by applicant]
US 4386944A · Kimura · 1983 [cited by applicant]
US 4435191A · Graham · 1984 [cited by applicant]
US 4477420A · Bauer et al. · 1984 [cited by applicant]
US 4518399A · Croskell et al. · 1985 [cited by applicant]
US 4639257A · Duckett et al. · 1987 [cited by applicant]
US 4690695A · Doshi · 1987 [cited by applicant]
US 4857082A · Dimartino, Sr. et al. · 1989 [cited by applicant]
US 4994094A · Behling et al. · 1991 [cited by applicant]
US 5089033A · Wijmans · 1992 [cited by applicant]
US 5102432A · Prasad · 1992 [cited by applicant]
US 5141642A · Kusuki et al. · 1992 [cited by applicant]
US 5199962A · Wijmans · 1993 [cited by applicant]
US 5281253A · Thompson · 1994 [cited by applicant]
US 5282969A · Xu · 1994 [cited by applicant]
US 5306427A · Xu · 1994 [cited by applicant]
US 5378263A · Prasad · 1995 [cited by applicant]
US 5401300A · Lokhandwala et al. · 1995 [cited by applicant]
US 5407466A · Lokhandwala et al. · 1995 [cited by applicant]
US 5407467A · Lokhandwala et al. · 1995 [cited by applicant]
US 5482539A · Callahan · 1996 [cited by applicant]
US 5507855A · Barry · 1996 [cited by examiner]
US 5556449A · Baker et al. · 1996 [cited by applicant]
US 5558698A · Baker et al. · 1996 [cited by applicant]
US 5632803A · Stoner et al. · 1997 [cited by applicant]
US 5709732A · Prasad · 1998 [cited by applicant]
US 5753011A · Sircar et al. · 1998 [cited by applicant]
US 5762685A · Baker et al. · 1998 [cited by applicant]
US 5827351A · Prasad et al. · 1998 [cited by applicant]
US 5837032A · Moll et al. · 1998 [cited by applicant]
US 5873928A · Callahan · 1999 [cited by applicant]
US 5919285A · Li et al. · 1999 [cited by applicant]
US 6035641A · Lokhandwala · 2000 [cited by applicant]
US 6053965A · Lokhandwala · 2000 [cited by applicant]
US 6096114A · Li et al. · 2000 [cited by applicant]
US 6128919A · Daus et al. · 2000 [cited by applicant]
US 6168648B1 · Ootani et al. · 2001 [cited by applicant]
US 6168649B1 · Jensvold et al. · 2001 [cited by applicant]
US 6180008B1 · White · 2001 [cited by applicant]
US 6221131B1 · Behling et al. · 2001 [cited by applicant]
US 6254666B1 · Li et al. · 2001 [cited by applicant]
US 6361582B1 · Pinnau et al. · 2002 [cited by applicant]
US 6361583B1 · Pinnau et al. · 2002 [cited by applicant]
US 6425267B1 · Baker et al. · 2002 [cited by applicant]
US 6428606B1 · Gottschlich et al. · 2002 [cited by applicant]
US 6565626B1 · Baker et al. · 2003 [cited by applicant]
US 6572678B1 · Wijmans et al. · 2003 [cited by applicant]
US 6572679B2 · Baker et al. · 2003 [cited by applicant]
US 6630011B1 · Baker et al. · 2003 [cited by applicant]
US 6632266B2 · Thomas et al. · 2003 [cited by applicant]
US 6648944B1 · Baker et al. · 2003 [cited by applicant]
US 6709491B2 · Kawakami et al. · 2004 [cited by applicant]
US 6767385B2 · Brazier · 2004 [cited by applicant]
US 6830691B2 · Colling et al. · 2004 [cited by applicant]
US 6921428B2 · Yamamoto et al. · 2005 [cited by applicant]
US 7537641B2 · Lokhandwala et al. · 2009 [cited by applicant]
US 7575624B2 · Cartwright et al. · 2009 [cited by applicant]
US 7604681B2 · Malsam et al. · 2009 [cited by applicant]
US 7947117B2 · Girdoudiere et al. · 2011 [cited by applicant]
US 7964020B2 · Baker et al. · 2011 [cited by applicant]
US 8153006B1 · Fessler et al. · 2012 [cited by applicant]
US 8192524B2 · Chinn et al. · 2012 [cited by applicant]
US 8317900B2 · Peinemann et al. · 2012 [cited by applicant]
US 8366804B2 · Liu et al. · 2013 [cited by applicant]
US 8388732B2 · Doong et al. · 2013 [cited by applicant]
US 8419828B2 · Diaz et al. · 2013 [cited by applicant]
US 8444749B2 · Sanders et al. · 2013 [cited by applicant]
US 8500864B2 · Gunther · 2013 [cited by applicant]
US 8568512B2 · Siegel et al. · 2013 [cited by applicant]
US 8669083B2 · Veit et al. · 2014 [cited by applicant]
US 8673056B2 · De Bas et al. · 2014 [cited by applicant]
US 8828120B2 · Szivacz et al. · 2014 [cited by applicant]
US 8999038B2 · Ungerank et al. · 2015 [cited by applicant]
US 9309476B2 · Graf · 2016 [cited by applicant]
US 9314735B2 · Balster et al. · 2016 [cited by applicant]
US 9433888B2 · Kulkarni · 2016 [cited by applicant]
US 9713791B2 · Priske et al. · 2017 [cited by applicant]
US 9770687B2 · Ungerank et al. · 2017 [cited by applicant]
US 9776129B2 · Heirman · 2017 [cited by applicant]
US 9969949B1 · Foody et al. · 2018 [cited by applicant]
US 9988326B2 · Paget et al. · 2018 [cited by applicant]
US 9993768B2 · W Mustapa et al. · 2018 [cited by applicant]
US 10086325B2 · Lee et al. · 2018 [cited by applicant]
US 10471380B2 · Priske · 2019 [cited by applicant]
US 11471823B2 · Roodbeen · 2022 [cited by applicant]
US 20070125537A1 · Lokhandwala et al. · 2007 [cited by applicant]
US 20100107872A1 · Warwick · 2010 [cited by applicant]
US 20100317091A1 · Veit et al. · 2010 [cited by applicant]
US 20110009684A1 · Diaz et al. · 2011 [cited by applicant]
US 20110244555A1 · Gunther · 2011 [cited by applicant]
US 20120097027A1 · Gunther · 2012 [cited by applicant]
US 20120135491A1 · Guenter · 2012 [cited by applicant]
US 20150129413A1 · Huang et al. · 2015 [cited by applicant]
US 20150336046A1 · Ungerank et al. · 2015 [cited by applicant]
US 20160228828A1 · Balster et al. · 2016 [cited by applicant]
US 20160288047A1 · Fukuda et al. · 2016 [cited by applicant]
US 20160346727A1 · Yeo et al. · 2016 [cited by applicant]
US 20170283292A1 · Kim · 2017 [cited by applicant]
US 20170361264A1 · Meyer · 2017 [cited by applicant]
US 20170368497A1 · Priske · 2017 [cited by applicant]
US 20180207577A1 · Gu et al. · 2018 [cited by applicant]
US 20190046922A1 · Jensvold et al. · 2019 [cited by applicant]
US 20190184332A1 · Cnop et al. · 2019 [cited by applicant]
US 20200047112A1 · Chareyre · 2020 [cited by examiner]
US 20200316516A1 · Wu et al. · 2020 [cited by applicant]
US 20210339189A1 · Winkler · 2021 [cited by applicant]
CA 2266567A1 · 2000 [cited by applicant]
EP 0390992B1 · 1994 [cited by applicant]
EP 0490322B1 · 1997 [cited by applicant]
EP 1324815A1 · 2003 [cited by applicant]
EP 1360985A1 · 2003 [cited by applicant]
EP 1434642A1 · 2004 [cited by applicant]
EP 1515790A2 · 2005 [cited by applicant]
EP 1754695A1 · 2007 [cited by applicant]
EP 1953130A1 · 2008 [cited by applicant]
EP 1287874B1 · 2009 [cited by applicant]
EP 2017222A1 · 2009 [cited by applicant]
EP 2296794A1 · 2011 [cited by applicant]
EP 2335815A1 · 2011 [cited by applicant]
EP 2440312A1 · 2012 [cited by applicant]
EP 2471592A1 · 2012 [cited by applicant]
EP 2588217A1 · 2013 [cited by applicant]
EP 2296784B1 · 2013 [cited by applicant]
EP 2666868A1 · 2013 [cited by applicant]
EP 2735355A1 · 2014 [cited by applicant]
EP 2797676A1 · 2014 [cited by applicant]
EP 2919888A1 · 2015 [cited by applicant]
EP 2974781A1 · 2016 [cited by applicant]
EP 2996794A1 · 2016 [cited by applicant]
EP 3027298A1 · 2016 [cited by applicant]
EP 3032205A3 · 2016 [cited by applicant]
EP 2104548B1 · 2017 [cited by applicant]
EP 3240620A1 · 2017 [cited by applicant]
EP 2206546B1 · 2018 [cited by applicant]
EP 3338876B1 · 2020 [cited by applicant]
EP 3463624B1 · 2021 [cited by applicant]
EP 3860742A1 · 2021 [cited by applicant]
EP 3917649A1 · 2021 [cited by applicant]
WO 199611048A1 · 1996 [cited by applicant]
WO 0016879A1 · 2000 [cited by applicant]
WO 0033949A1 · 2000 [cited by applicant]
WO 2005032702A1 · 2005 [cited by applicant]
WO 2008079609A1 · 2008 [cited by applicant]
WO 2009073029A1 · 2009 [cited by applicant]
WO 2012000727A1 · 2012 [cited by applicant]
WO 2012095099A2 · 2012 [cited by applicant]
WO 2012128648A1 · 2012 [cited by applicant]
WO 2013169093A1 · 2013 [cited by applicant]
WO 2014075850A1 · 2014 [cited by applicant]
WO 2015036709A1 · 2015 [cited by applicant]
WO 2017206069A1 · 2017 [cited by applicant]
Examination Report issued for European Patent Application No. 20157030.6 dated May 19, 2022, 4 pages. [cited by applicant]
“Process analytics support higher yields in biogas plants,” Siemans, Aug. 2010, 12 pages. [cited by applicant]
Allegue et al., “Biogas and bio-syngas upgrading,” Danish Technological Institute, Dec. 2012, 97 pages. [cited by applicant]
Langerak et al., “Biogas upgrading: Membrane separation takes over,” DMT Environmental Technological, Novemeber 21, 2015, 10 pages. [cited by applicant]
Extended European Search Report, European Application No. 20157030.6, dated Jul. 20, 2020, 7 pages. [cited by applicant]
Basu et al., “Membrane-based technologies for biogas separations”, Chemical Society Reviews, 39, Oct. 6, 2009, pp. 750-768. [cited by applicant]