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:
Feb. 27, 1996
Filed:
Jun. 17, 1994
Applicant:
Inventors:
Ichiro Kaneko, Ibaraki, JP;
Atushi Sugitani, Ibaraki, JP;
Masahiro Yuyama, Ibaraki, JP;
Kiyoshi Motomi, Ibaraki, JP;
Assignee:
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
528179 ; 528125 ; 528128 ; 528170 ; 528172 ; 528173 ; 528183 ; 528184 ; 528188 ; 528220 ; 528229 ; 528310 ; 528322 ; 528353 ;
Abstract
Polyimides comprising recurring units of the following general formula (1) ##STR1## wherein Ar.sub.1 represents a tetravalent aromatic group and each Ar.sub.2 represents a divalent aromatic group. Polyimide copolymers and preparations of the polyimides and the polyimide copolymers are also described.
Kaneko, Ichiro. (1996). Polyimides and processes for preparing the same (U.S. Patent No. 5494991). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5494991
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile