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:
May. 09, 2023
Filed:
Mar. 19, 2020
Applicant:
Tokyo Ohka Kogyo Co., Ltd., Kawasaki, JP;
Inventor:
Kazuaki Ebisawa, Kawasaki, JP;
Assignee:
TOKYO OHKA KOGYO CO., LTD., Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 207/448 (2006.01); C08F 212/08 (2006.01); C07D 209/48 (2006.01);
U.S. Cl.
CPC ...
C07D 207/448 (2013.01); C07D 209/48 (2013.01); C08F 212/08 (2013.01);
Abstract
A method for producing a maleimide compound having a group represented by the formula (a1), the method including condensing a primary amino group in a raw material compound having the primary amino group and dicarboxylic anhydride represented by the formula (a2) to generate a group represented by the formula (a3); and heating a compound having the group represented by the formula (a3), and converting the group represented by the formula (a3) into the group represented by the formula (a1).