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:
Jul. 31, 2001
Filed:
Oct. 20, 1999
Applicant:
Inventors:
Lincoln Eramo, Jr., San Clemento, CA (US);
Mitchell G. Male, San Marcos, CA (US);
Robert K. Barr, Laguna Niguel, CA (US);
Daniel E. Lundy, Pomona, CA (US);
Assignee:
Rohm and Haas Company, Philadelphia, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03F 7/028 ; G03F 7/033 ; G03F 7/038 ; C07C 6/752 ;
U.S. Cl.
CPC ...
G03F 7/028 ; G03F 7/033 ; G03F 7/038 ; C07C 6/752 ;
Abstract
An oligomer is provided having tetraacrylate functionality as well as carboxylic acid functionality. The oligomer is useful as a photopolymerizable binder in photoresists for forming printed circuitry. Particular advantages of the oligomer are found in solder mask-forming compositions which must withstand the conditions of nickel/gold plating.