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:
May. 19, 1987
Filed:
Mar. 06, 1985
Applicant:
Inventors:
Paul R Hein, Marietta, GA (US);
Henry C Miller, Douglasville, GA (US);
W Darlene Brewster, Marietta, GA (US);
Assignee:
W. R. Grace & Co., Cambridge, MA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
430311 ; 430284 ; 430327 ; 430325 ; 430330 ; 427 541 ; 427 531 ; 427 561 ; 427 96 ; 522 96 ;
Abstract
A polymer suitable for use as a solder mask comprised of an acrylated or methacrylated polyurethane having terminal alkene unsaturation at each end has been synthesized. This polymer can be a liquid or a hot melt and when in a photopolymerizable composition it is suitable for roller coating or screen printing onto a printed circuit board substrate.