IP Library › Granted Patent US 12,668,865
Granted Patent B2
US 12,668,865 · App. 18/525,631 · Granted Jun 30, 2026

Using pelletized metal-decorated materials in an induction melting furnace

Inventors: Michael Stowell (Sunnyvale, CA); Lauren Sienko (Champaign, IL); Daniel Jacobson (Champaign, IL)
Assignee: Lyten, Inc.
C23C4/067C22C19/056C23C4/10C23C4/134
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,668,865
App. No.
18/525,631
Filed
Nov 30, 2023
Granted
Jun 30, 2026
Kind
B2
Art Unit
1759
USPC
428/450
Abstract

Metal(s) (including various alloys, such as INCONEL® superalloys) are characterized by having carbon disposed within the metal lattice structure thereof. The carbon is primarily, or entirely, present at interstitial sites of the metal lattice, and may be present in amounts ranging from about 1.5 wt % to about 90 wt %. Carbon may be present in the form of graphene, which may be characterized as one or more coherent, planar layers of graphene. The carbon, moreover, forms non-polar covalent bonds with both metal atoms of the lattice and other carbon atoms present in the lattice. This facilitates substantially homogeneous dispersal of the carbon throughout the resultant material, conveying unique and advantageous properties such as strength-to-weight ratio, density, mechanical toughness, sheer strength, flex strength, hardness, anti-corrosiveness, electrical and/or thermal conductivity, etc. as described herein. In some approaches, the composition of matter may be powderized, or the powder may be pelletized.

Claims (43)

1 . A composition of matter, comprising:

an alloy comprising:

nickel;

chromium;

iron; and

at least about 1.5 wt % carbon, wherein the carbon is disposed in a metal lattice of the alloy,

wherein at least some carbon atoms are covalently bonded to other carbon atoms disposed in the metal lattice.

2 . The composition of matter as recited in claim 1 , wherein at least some of the carbon is graphene.

3 . The composition of matter as recited in claim 1 , wherein the carbon is disposed in interstitial sites of the metal lattice.

4 . The composition of matter as recited in claim 1 , wherein at least some of the carbon is covalently bonded to metal atoms of the metal lattice.

5 . The composition of matter as recited in claim 1 , wherein at least some carbon atoms are covalently bonded to metal atoms of the metal lattice.

6 . The composition of matter as recited in claim 5 , wherein the covalent bonds between the carbon atoms and the metal atoms comprise non-polar covalent bonds.

7 . The composition of matter as recited in claim 1 , wherein the covalent bonds between the carbon atoms comprise non-polar covalent bonds.

8 . The composition of matter as recited in claim 1 , wherein the composition of matter substantially excludes polar covalent bonds.

9 . The composition of matter as recited in claim 1 , wherein the metal lattice substantially excludes ionic bonds.

10 . The composition of matter as recited in claim 1 , wherein the metal lattice is characterized by a carbon loading in a range from about 6 wt % to about 90 wt %.

11 . The composition of matter as recited in claim 1 , wherein grain boundaries of the alloy are substantially free of carbon aggregates and/or agglomerates.

12 . The composition of matter as recited in claim 1 , wherein the carbon is substantially homogeneously distributed throughout the metal lattice.

13 . The composition of matter as recited in claim 1 , wherein a largest discernable feature size of the composition of matter is in a range from about 0.1 nm to about 1 μm.

14 . A composition of matter, comprising a metal lattice having at least about 6 wt % carbon disposed in the metal lattice; and

wherein the metal lattice is characterized by a crystalline structure selected from face centered cubic (FCC), body-centered cubic (BCC), and hexagonal close packed (HCP),

wherein at least some carbon atoms are covalently bonded to other carbon atoms disposed in the metal lattice.

15 . The composition of matter as recited in claim 14 , wherein at least some of the carbon is disposed at interstitial sites of the metal lattice.

16 . The composition of matter as recited in claim 14 , wherein grain boundaries of the composition of matter are substantially devoid of carbon aggregate(s) and/or agglomerate(s).

17 . The composition of matter as recited in claim 14 , wherein metal lattice comprises one or more metals selected from the group consisting of: nickel, chromium, aluminum, copper, iron, titanium, tantalum, tungsten, molybdenum, cobalt, manganese, niobium, and alloys thereof.

18 . The composition of matter as recited in claim 17 , wherein the one or more metals are present in the form of a superalloy.

19 . The composition of matter as recited in claim 14 , wherein at least some carbon atoms are covalently bonded to metal atoms of the metal lattice.

20 . The composition of matter as recited in claim 19 , wherein the covalent bonds between the carbon atoms and the metal atoms comprise non-polar covalent bonds.

21 . The composition of matter as recited in claim 14 , wherein the covalent bonds between the carbon atoms comprise non-polar covalent bonds.

22 . The composition of matter as recited in claim 14 , wherein the composition of matter substantially excludes polar covalent bonds.

23 . The composition of matter as recited in claim 14 , wherein the metal lattice substantially excludes ionic bonds.

24 . The composition of matter as recited in claim 14 , wherein the carbon is substantially homogeneously distributed throughout the metal lattice.

25 . The composition of matter as recited in claim 14 , wherein a largest discernable feature size of the composition of matter is in a range from about 0.1 nm to about 1 μm.

26 . A composition of matter, comprising a superalloy, wherein a metal lattice of the superalloy is physically characterized by having:

carbon disposed therein; and

a crystalline structure selected from face centered cubic (FCC), body-centered cubic (BCC), and hexagonal close packed (HCP),

wherein at least some carbon atoms are covalently bonded to other carbon atoms disposed in the metal lattice.

27 . The composition of matter as recited in claim 26 , wherein the superalloy comprises:

nickel;

chromium;

iron; and

wherein the carbon is present in an amount of at least about 1.5 wt %.

28 . The composition of matter as recited in claim 26 , wherein the carbon is present in an amount of at least about 6 wt %.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 30, 2024
From: STOWELL, MICHAEL; SIENKO, LAUREN; JACOBSON, DANIEL
To: LYTEN, INC.
Reel/Frame 066301/0331 →
Continuity (11)
Continuation 17957989 · Sep 30, 2022
Continuation In Part 17241852 · Apr 27, 2021
Division 16752693 · Jan 27, 2020
Continuation In Part 16460177 · Jul 2, 2019
Provisional Application 63252304 · Oct 5, 2021
Provisional Application 62868493 · Jun 28, 2019
Provisional Application 62839995 · Apr 29, 2019
Provisional Application 62797306 · Jan 27, 2019
Provisional Application 62720677 · Aug 21, 2018
Provisional Application 62714030 · Aug 2, 2018
Related Publication 20240110271A1 · Apr 4, 2024
References Cited (95)
US 9410230B2 · Theisen · 2016 [cited by examiner]
US 10711327B2 · Scherer et al. · 2020 [cited by applicant]
US 11097511B2 · Zhao et al. · 2021 [cited by applicant]
US 11827987B2 · Stowell et al. · 2023 [cited by applicant]
US 11873563B2 · Stowell et al. · 2024 [cited by applicant]
US 12018383B2 · Anzelmo et al. · 2024 [cited by applicant]
US 12195860B2 · Stowell et al. · 2025 [cited by applicant]
US 12371773B2 · Anzelmo et al. · 2025 [cited by applicant]
US 12497682B2 · Stowell et al. · 2025 [cited by applicant]
US 20160136928A1 · Zhao et al. · 2016 [cited by applicant]
US 20160273079A1 · Das et al. · 2016 [cited by applicant]
US 20170194105A1 · Zhamu et al. · 2017 [cited by applicant]
US 20190283379A1 · Lin et al. · 2019 [cited by applicant]
US 20200017645A1 · Nosker et al. · 2020 [cited by applicant]
US 20200028155A1 · Stowell et al. · 2020 [cited by applicant]
US 20200263285A1 · Stowell et al. · 2020 [cited by applicant]
US 20200340080A1 · Sullivan et al. · 2020 [cited by applicant]
US 20200385272A1 · Cross et al. · 2020 [cited by applicant]
US 20230040722A1 · Stowell et al. · 2023 [cited by applicant]
US 20230145800A1 · Stowell et al. · 2023 [cited by applicant]
US 20230147825A1 · Stowell et al. · 2023 [cited by applicant]
US 20230416896A1 · Stowell et al. · 2023 [cited by applicant]
US 20240002995A1 · Anzelmo et al. · 2024 [cited by applicant]
US 20240010818A1 · Stowell et al. · 2024 [cited by applicant]
US 20240247359A1 · Stowell et al. · 2024 [cited by applicant]
US 20240309502A1 · Anzelmo et al. · 2024 [cited by applicant]
US 20250305106A1 · Stevens et al. · 2025 [cited by applicant]
US 20260004942A1 · Stowell et al. · 2026 [cited by applicant]
US 20260062784A1 · Stowell et al. · 2026 [cited by applicant]
CN 106536404A · 2017 [cited by applicant]
TW 202111159A · 2021 [cited by applicant]
WO 2014070006A1 · 2014 [cited by applicant]
WO 2022129736A1 · 2022 [cited by applicant]
WO 2022200694A1 · 2022 [cited by applicant]
WO 2022203205A1 · 2022 [cited by applicant]
Putatunda, Susil K., Jianghuai Yang, and Richard B. Gundlach. “Development of an austenitic structural steel.” Materials & design 26.6 (2005): 534-544. [cited by examiner]
Corrected Notice of Allowance from U.S. Appl. No. 18/243,578, dated Oct. 1, 2024. [cited by applicant]
International Search Report and Written Opinion from PCT Application No. PCT/US 24/40139, dated Oct. 8, 2024, 13 pages. [cited by applicant]
Notice of Allowance from U.S. Appl. No. 18/367,967, dated Jan. 18, 2024. [cited by applicant]
Corrected Notice of Allowance from U.S. Appl. No. 18/243,578, dated Jan. 31, 2024. [cited by applicant]
Corrected Notice of Allowance from U.S. Appl. No. 18/367,967, dated Feb. 22, 2024. [cited by applicant]
International Search Report and Written Opinion from PCT Application No. PCT/US2023/030509, dated Feb. 13, 2024, 15 pages. [cited by applicant]
Stowell et al., U.S. Appl. No. 18/597,720, filed Mar. 6, 2024. [cited by applicant]
Corrected Notice of Allowance from U.S. Appl. No. 18/670,583, dated May 16, 2025. [cited by applicant]
Stevens et al., U.S. Appl. No. 19/236,833, filed Jun. 12, 2025. [cited by applicant]
Davijani et al., U.S. Appl. No. 19/241,248, filed Jun. 17, 2025. [cited by applicant]
Supplemental Notice of Allowance from U.S. Appl. No. 18/367,967, dated Apr. 3, 2024. [cited by applicant]
Supplemental Notice of Allowance from U.S. Appl. No. 18/367,967, dated May 20, 2024. [cited by applicant]
Anzelmo et al., U.S. Appl. No. 18/670,583, filed May 21, 2024. [cited by applicant]
Office Action from Taiwanese Application No. 113128350, dated Feb. 25, 2025, 4 pages. [cited by applicant]
Notice of Allowance from U.S. Appl. No. 18/670,583, dated Mar. 18, 2025. [cited by applicant]
Tian et al., “A Review on the Strengthening of Nanostructured Materials,” International Journal of Current Engineering and Technology, vol. 8, No. 2, 2018, pp. 236-249. [cited by applicant]
Bakir et al., “Novel metal-carbon nanomaterials: A review on covetics,” Advanced Materials Letters, vol. 8, No. 9, 2017, pp. 884-890. [cited by applicant]
Wang et al., “Improvement of interfacial interaction and mechanical properties in copper matrix composites reinforced with copper coated carbon nanotubes,” Materials Science and Engineering A, vol. 715, 2018, pp. 163-17… [cited by applicant]
Uglov et al., “Mechanical properties of copper/carbon nanocomposite films formed by microwave plasma assisted deposition techniques from argon-methane and argon-acetylene gas mixtures,” Composites Science and Technology… [cited by applicant]
Varnell et al., “Understanding the influence of carbon addition on the corrosion behavior and mechanical properties of Al alloy “covetics”,” Journal of Materials Science, vol. 54, No. 3, Feb. 2019, 14 pages. [cited by applicant]
Balachandran, U., “Covetic Materials,” Argonne National Laboratory, U.S. DOE Advanced Manufacturing Office Program Review Meeting, May 2015, 17 pages. [cited by applicant]
Isaacs, R., “Characterization of copper covetic bulk and films: Copper with high carbon content,” University of Maryland, 2016, 130 pages, retrieved from https://drum.lib.umd.edu/handle/1903/18380. [cited by applicant]
Pham et al., “A method to obtain homogeneously dispersed carbon nanotubes in Al powders for preparing AI/CNTs nanocomposite,” Advances in Natural Sciences: Nanoscience and Nanotechnology, vol. 4, 2013, 6 pages. [cited by applicant]
Basu, B., “Some fundamentals on Spark Plasma Sintering as a processing tool to fabricate Biomaterials,” Department of Materials Science and Engineering, Indian Institute of Technology Kanpur, retrieved from https://www.… [cited by applicant]
Washington Education Structures, “Structures of Metals,” Washington Education Structures, retrieved from https://web.archive.org/web/20170124054449/https://depts.washington.edu/matseed/mse_resources/Webpage/Metals/metal… [cited by applicant]
Stowell et al., U.S. Appl. No. 17/957,937, filed Sep. 30, 2022. [cited by applicant]
Stowell et al., U.S. Appl. No. 17/957,989, filed Sep. 30, 2022. [cited by applicant]
Non-Final Office Action from U.S. Appl. No. 17/957,937, dated May 11, 2023. [cited by applicant]
Stowell et al., U.S. Appl. No. 17/241,852, filed Apr. 27, 2021. [cited by applicant]
Restriction Requirement from U.S. Appl. No. 17/957,989, dated Jun. 22, 2023. [cited by applicant]
Notice of Allowance from U.S. Appl. No. 17/957,937, dated Jul. 6, 2023. [cited by applicant]
Non-Final Office Action from U.S. Appl. No. 17/957,989, dated Aug. 1, 2023. [cited by applicant]
Corrected Notice of Allowance from U.S. Appl. No. 17/957,937, dated Aug. 9, 2023. [cited by applicant]
Notice of Allowance from U.S. Appl. No. 17/957,937, dated Sep. 20, 2023. [cited by applicant]
Stowell et al., U.S. Appl. No. 18/243,578, filed Sep. 7, 2023. [cited by applicant]
Anzelmo et al., U.S. Appl. No. 18/367,967, filed Sep. 13, 2023. [cited by applicant]
Final Office Action from U.S. Appl. No. 17/957,989, dated Oct. 10, 2023. [cited by applicant]
Notice of Allowance from U.S. Appl. No. 17/957,989, dated Oct. 20, 2023. [cited by applicant]
Non-Final Office Action from U.S. Appl. No. 18/243,578, dated Oct. 26, 2023. [cited by applicant]
Restriction Requirement from U.S. Appl. No. 18/367,967, dated Nov. 28, 2023. [cited by applicant]
Notice of Allowance from U.S. Appl. No. 18/243,578, dated Dec. 13, 2023. [cited by applicant]
Stowell et al., U.S. Appl. No. 19/249,935, filed Jun. 25, 2025. [cited by applicant]
Allen et al., “Materials challenges for nuclear systems,” Materials Today, vol. 13, No. 12, Dec. 2010, pp. 14-23. [cited by applicant]
Brown et al., “Physical and Mechanical Characterization of a Nanocarbon Infused Aluminum-Matrix Composite,” Materials Performance and Characterization, Oct. 2011, 17 pages. [cited by applicant]
Butler et al., “Progress, Challenges and Opportunities in Two-Dimensional Materials Beyond Graphene,” ACS Nano, vol. 7, No. 4, 2013, pp. 2898-2926. [cited by applicant]
Cai et al., “A review of fretting study on nuclear power equipment,” Tribology International, vol. 144, Apr. 2020, pp. 1-16. [cited by applicant]
Chen et al., “Graphene nanosheets—Inconel 718 nanocomposites fabricated by spark plasma sintering of in-situ grown vertically standing graphene nanosheets—Inconel 718 powders,” Micro & Nano Letters, vol. 14, 2019, pp. 6… [cited by applicant]
Rana et al., “A review of covetics—current understanding and future perspectives,” Nanoscale Advances. vol. 5, 2023, pp. 11-26. [cited by applicant]
Corrected Notice of Allowance from U.S. Appl. No. 18/243,578, dated Nov. 19, 2024. [cited by applicant]
Final Office Action from U.S. Appl. No. 18/670,583, dated Nov. 27, 2024. [cited by applicant]
Corrected Notice of Allowance from U.S. Appl. No. 18/670,583, dated Mar. 28, 2025. [cited by applicant]
Corrected Notice of Allowance from U.S. Appl. No. 18/670,583, dated Apr. 7, 2025. [cited by applicant]
Non-Final Office Action from U.S. Appl. No. 18/597,720, dated Apr. 23, 2025. [cited by applicant]
Non-Final Office Action from U.S. Appl. No. 18/670,583, dated Aug. 22, 2024. [cited by applicant]
Notice of Allowance from U.S. Appl. No. 18/243,578, dated Sep. 18, 2024. [cited by applicant]
Office Action from Taiwanese Application No. 112134605, dated Jun. 19, 2024, 6 pages. [cited by applicant]
Notice of Allowance from U.S. Appl. No. 18/597,720, dated Oct. 28, 2025. [cited by applicant]
Stowell et al., U.S. Appl. No. 19/376,737, filed Oct. 31, 2025. [cited by applicant]
Office Action from Taiwanese Application No. 114117329, dated Jan. 22, 2026, 5 pages. [cited by applicant]