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:
Oct. 08, 2002
Filed:
Mar. 23, 1999
Applicant:
Inventors:
Michitoshi Arata, Shimodate, JP;
Nozomu Takano, Yuuki, JP;
Tomio Fukuda, Shimodate, JP;
Kenichi Tomioka, Shimodate, JP;
Assignee:
Hitachi Chemical Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
C08F / ;
Abstract
An epoxy resin composition for a printed circuit board includes an epoxy resin; a multi-functional phenol group; a hardening accelerator; and at least one of a compound having a triazine or isocyanurate ring, and a compound containing less than 60 weight percent nitrogen, but not containing a urea derivative. A printed circuit board comprising the epoxy resin composition has low water absorption, excellent heat endurance, and a good adhesion with copper foil.