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. 21, 1992
Filed:
May. 02, 1989
Applicant:
Inventors:
Assignee:
Hitachi Chemical Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 26 ; 528 28 ; 528 38 ;
Abstract
Insulating resin composition for a semiconductor device having a multilevel interconnection layers formed by the resin and having a superior planarizing capability relative to a lower interconnection layer is provided, which resin being a cured product of a polyamic acid ester oligomer obtained by reacting an aromatic diamine and/or a diaminosiloxane with an aromatic tetracarboxylic acid ester obtained by reacting an aromatic tetracarboxylic acid dianhydride with an alcohol or alcohol derivative.