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:
Aug. 09, 2022
Filed:
Mar. 27, 2020
Applicant:
Ube Industries, Ltd., Ube, JP;
Inventors:
Takeshige Nakayama, Ube, JP;
Susumu Takasaki, Ube, JP;
Tomonori Nakayama, Ube, JP;
Kensuke Hiroshige, Ube, JP;
Assignee:
Ube Industries, Ltd., Ube, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 73/10 (2006.01); C08L 79/08 (2006.01); C09D 179/08 (2006.01); H01M 4/62 (2006.01); H05K 1/02 (2006.01); H05K 3/00 (2006.01); C08G 73/12 (2006.01); H01M 4/04 (2006.01); H01M 10/0525 (2010.01); G02F 1/1333 (2006.01);
U.S. Cl.
CPC ...
C08G 73/1021 (2013.01); C08G 73/105 (2013.01); C08G 73/1032 (2013.01); C08G 73/1046 (2013.01); C08G 73/1071 (2013.01); C08G 73/1078 (2013.01); C08G 73/1082 (2013.01); C08G 73/128 (2013.01); C08L 79/08 (2013.01); C09D 179/08 (2013.01); H01M 4/0404 (2013.01); H01M 4/0471 (2013.01); H01M 4/622 (2013.01); H01M 4/623 (2013.01); H01M 10/0525 (2013.01); H05K 1/028 (2013.01); H05K 3/007 (2013.01); C09D 179/085 (2013.01); G02F 1/133305 (2013.01);
Abstract
A method for producing an aqueous polyimide precursor solution composition includes forming a polyamic acid by the reaction of a tetracarboxylic acid component and a diamine component in an aqueous solvent together with an imidazole in an amount of 1.6 mole or more per mole of the tetracarboxylic acid component of the polyamic acid.