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. 07, 1993
Filed:
Oct. 18, 1991
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03F / ; G03F / ;
U.S. Cl.
CPC ...
430190 ; 430165 ; 430168 ; 430169 ; 430191 ; 430192 ; 430193 ; 430277 ; 430318 ; 430326 ; 430910 ;
Abstract
An electrophoretic positive working photosensitive composition for producing a photoresist pattern on metal base plate comprises a photosensitive compound, in which a photosensitive quinone diazide group is grafted on a polyester, and an acrylic copolymer containing carboxyl group, the composition forms a smooth photoresist film on the plate and has a good adhesion to the surface that no pinehole is found.