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:
Sep. 06, 2022
Filed:
Jul. 30, 2020
Applicant:
Pi Advanced Materials Co., Ltd., Chungcheongbuk-do, KR;
Inventors:
Assignee:
PI Advanced Materials Co., Ltd., Chungcheongbuk-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 233/00 (2006.01); C01B 32/205 (2017.01);
U.S. Cl.
CPC ...
C01B 32/205 (2017.08); C07C 233/00 (2013.01); C01B 2204/04 (2013.01); C01B 2204/24 (2013.01); C01P 2006/32 (2013.01);
Abstract
The present invention provides a method for preparing a high-performance graphite sheet by imidizing a polyamic acid resulting from a reaction of dianhydride monomer(s) and diamine monomer(s) to obtain a polyimide film; and carbonizing and/or graphitizing the polyimide film to obtain a high-performance graphite sheet, where the polyimide film contains 2 or more fillers having different average particle diameters, and the thermal conductivity of the graphite sheet is at least 1,400 W/m·K. Further, the present invention provides a graphite sheet obtained by the above method.