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. 25, 1992
Filed:
May. 24, 1990
Applicant:
Inventors:
Yukinori Sakumoto, Shizuoka, JP;
Shigeyuki Yokoyama, Shizuoka, JP;
Akihiro Shibuya, Shizuoka, JP;
Nobuyuki Nakayama, Shizuoka, JP;
Atsushi Koshimura, Shizuoka, JP;
Assignee:
Tomoegawa Paper Co., Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
428352 ; 428 40 ; 428344 ; 428354 ; 4284735 ; 357 70 ;
Abstract
Adhesive tapes suitable for use in wire-bonded semiconductor devices are disclosed. They are each composed of a heat-resistant substrate formed of at least one layer, a copper foil provided on one side of the substrate, and a semi-cured adhesive layer and a protective film provided successively on the other side of the substrate. Semiconductor devices fabricated using such adhesive tapes are also disclosed.