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. 08, 2001
Filed:
Jan. 29, 1998
Applicant:
Inventors:
Osamu Oka, Shizuoka, JP;
Takeshi Nishigaya, Shizuoka, JP;
Jun Tochihira, Shizuoka, JP;
Fumiki Komagata, Shizuoka, JP;
Assignee:
Tomoegawa Paper Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09J 7/02 ;
U.S. Cl.
CPC ...
C09J 7/02 ;
Abstract
This invention provide an adhesive tape for electronic parts having sufficient thermal resistance and reliability. The adhesive tape comprises a metal substrate, an adhesive layer A and an adhesive layer B laminated in order, wherein said adhesive layers A and B are resin layers composed of 100-40% by mol of at least a polyimide comprising the repeating unit represented by the formula (1) and 0-60% by mol of the repeating unit represented by the formula (2), said two adhesive layers having each a different glass transition temperature: