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. 19, 1978
Filed:
Apr. 14, 1977
Applicant:
Inventors:
Goro Tanaka, Hitachi, JP;
Hiroshi Suzuki, Hitachi, JP;
Assignees:
Hitachi Chemical Co., Ltd., BOTH OF, JP;
Hitachi, Ltd., BOTH OF, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
260823 ;
Abstract
Half-ester compounds obtained by reacting polycarboxylic acid anhydrides with aliphatic tertiary amino alcohols have excellent latent characteristics as a curing catalyst for epoxy resins which are normally catalyzed by tertiary amines. When epoxy resin compositions containing the half-ester compounds are applied to semiconductor devices, remarkably small leakage currents of the devices are observed.