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:
Jun. 28, 2022
Filed:
Feb. 25, 2020
Applicant:
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Inventors:
Noriyuki Kato, Tokyo, JP;
Hirohito Ishizuka, Ibaraki, JP;
Munenori Shiratake, Tokyo, JP;
Kentaro Ishihara, Tokyo, JP;
Assignee:
MITSUBISHI GAS CHEMICAL COMPANY, INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 1/04 (2006.01); C08G 64/16 (2006.01); C08G 63/672 (2006.01); C08K 5/103 (2006.01); C08K 5/134 (2006.01); C08G 63/64 (2006.01); C08G 63/197 (2006.01); C08G 63/193 (2006.01); C08G 64/06 (2006.01); C08K 5/00 (2006.01);
U.S. Cl.
CPC ...
C08G 64/1608 (2013.01); C08G 63/193 (2013.01); C08G 63/197 (2013.01); C08G 63/64 (2013.01); C08G 63/672 (2013.01); C08G 64/06 (2013.01); C08K 5/005 (2013.01); C08K 5/103 (2013.01); C08K 5/134 (2013.01); G02B 1/04 (2013.01); G02B 1/041 (2013.01);
Abstract
A polyester carbonate resin is provided, which includes a structural unit derived from a compound represented by general formula (1), a structural unit derived from a compound represented by general formula (2), a structural unit derived from a dicarboxylic acid or a derivative thereof, and a structural unit derived from a carbonic acid diester. The polyester carbonate can be used, e.g., in optical systems.