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:
Jul. 11, 1989
Filed:
Aug. 18, 1987
Applicant:
Inventors:
Mitsumasa Kojima, Hitachi, JP;
Takayuki Saito, Hitachi, JP;
Toul Kikuchi, Hitachi, JP;
Shun-ichiro Uchimura, Hitachi, JP;
Hidetaka Satou, Cupertino, CA (US);
Daisuke Makino, Hitachi, JP;
Assignee:
Hitachi Chemical Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528353 ; 528125 ; 528126 ; 528128 ; 528172 ; 528185 ; 528188 ; 528352 ;
Abstract
There are disclosed a process for producing a polyamide acid having at least one siloxane bond, which comprises carrying out the reaction of: