The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 16, 2018
Filed:
May. 14, 2014
Applicant:
Graftech International Holdings, Inc., Independence, OH (US);
Inventor:
Iti Srivastava, Rocky River, OH (US);
Assignee:
NeoGraf Solutions, LLC, Lakewood, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 31/04 (2006.01); C01B 32/184 (2017.01); C01B 32/19 (2017.01);
U.S. Cl.
CPC ...
C01B 31/0469 (2013.01); C01B 32/184 (2017.08); C01B 32/19 (2017.08); C01B 2204/04 (2013.01);
Abstract
A method of producing graphene powder includes the heat treatment of a graphitizable polymer film to at least 2000 degrees C. to form a heat treated film having a substantially turbostratic graphitic structure. The heat treated film is then sheared along a plane substantially parallel to a major surface of the heat treated film to form a particulate having a thickness less than 100 nanometers.