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:
Dec. 15, 1992
Filed:
Nov. 13, 1991
Applicant:
Inventors:
Junichi Imaizumi, Shimodate, JP;
Hiroshi Nomura, Oyama, JP;
Kouichi Nagao, Shimodate, JP;
Masakatsu Suzuki, Shimodate, JP;
Koushi Sakairi, Shimodate, JP;
Eikichi Satou, Oyama, JP;
Assignee:
Hitachi Chemical Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528322 ; 524233 ;
Abstract
A heat resistant adhesive composition comprising a specific polyamic acid solution and a bis-maleimide compound exhibits flexibility and excellent heat resistance after bonding two material bodies, and therefore, it can be suitably used for producing of flexible metal-clad laminates, double-sided flexible metal-clad laminates, and multilayer printed circuit boards, and for attaching coverlay films to printed circuit boards.