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:
Dec. 27, 2016
Filed:
Dec. 20, 2013
Applicants:
Aiping Yu, Waterloo, CA;
Victor Chabot, Waterloo, CA;
Zhongwei Chen, Waterloo, CA;
Inventors:
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 31/04 (2006.01);
U.S. Cl.
CPC ...
C01B 31/0469 (2013.01); C01B 2204/02 (2013.01); C01B 2204/04 (2013.01);
Abstract
A method of producing single or few-layer graphene comprises exfoliating graphite with a polymer to form a graphene-polymer composite and subsequently treating the composite to disassociate graphene. The exfoliation process is conducted using sonication. The graphene is disassociated from the polymer by a treatment step such as acid hydrolysis. The method results in highly pure graphene.