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. 02, 1995
Filed:
Mar. 16, 1993
Applicant:
Inventors:
Yoshihiko Ito, Kyoto, JP;
Kohei Tamao, Kyoto, JP;
Shigehiro Yamaguchi, Kyoto, JP;
Yoshiki Nakagawa, Nishinomiya, JP;
Assignee:
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07F / ; C08G / ;
U.S. Cl.
CPC ...
549-4 ; 549 59 ; 556406 ; 556427 ; 528 30 ;
Abstract
A thiophene-silole copolymer represented by the formula below and its method of manufacture are disclosed; ##STR1## wherein, R is a monofunctional hydrocarbon group having 1 to 20 carbon atoms or hydrogen, A and B are alkyl groups, aromatic groups, alkenyl groups, or represent an aliphatic group forming a ring wherein A is bonded to B, m and p are integers no less than 1, n is a natural number which can be 0, X is a hydrogen or halogen atom, and Y is a hydrogen atom, halogen atom or thiophene.