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:
Jun. 19, 2001
Filed:
Dec. 07, 1999
Applicant:
Inventor:
Alexander S. Gybin, Duluth, MN (US);
Assignee:
The Chromaline Corporation, Duluth, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03F 7/021 ;
U.S. Cl.
CPC ...
G03F 7/021 ;
Abstract
Disclosed are photoresist compositions comprising a polymeric backbone and a quaternary heterocyclic pendant group, particularly usefull in the preparation of screen printing and sandblast etching photoresists. The pendant groups comprise furanyl substituted quaternary heterocyclic groups, as seen in the formula: