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:
Sep. 15, 1998
Filed:
Jul. 20, 1994
Applicant:
Inventors:
Richard Vicari, Chatham, NJ (US);
Douglas J Gordon, Somerville, NJ (US);
William D Hinsberg, Fremont, CA (US);
Dennis R McKean, San Jose, CA (US);
Carlton G Willson, San Jose, CA (US);
Ralph Dammel, Klein-Winternheim, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526313 ; 430192 ;
Abstract
A polymer of (a) an unsubstituted 4-hydroxystyrene monomer and (b) a substituted 4-hydroxystyrene monomer of the formula ##STR1## wherein A, B, C, and D are independently H or C.sub.1 to C.sub.4 alkyl wherein at least one of B and D is C.sub.1 to C.sub.4 alkyl; and wherein said copolymer has a molecular weight of from about 800 to about 100,000; and wherein the mol ratio of monomer (a) to monomer (b) ranges from about 3:1 to about 1:3.