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. 04, 1990
Filed:
May. 12, 1989
Applicant:
Inventors:
Shuhchung S Chen, Belle Mead, NJ (US);
Jules E Schoenberg, Scotch Plains, NJ (US);
Song Park, Fullerton, CA (US);
Assignee:
National Starch and Chemical Investment Holding Corporation, Wilmington, DE (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01B / ;
U.S. Cl.
CPC ...
252512 ; 252513 ; 252514 ; 252518 ; 252520 ; 252521 ; 523454 ; 523458 ; 523427 ; 428418 ; 428413 ; 156330 ;
Abstract
This invention presents improved epoxy-based die attach adhesives which are of low viscosity, high ionic purity, and stable toward thermal cycling. This improvement is obtained by including in the formulation carboxy terminated polymers which are the reaction products of polyether diols with cyclic dianhydrides.