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:
Oct. 15, 1991
Filed:
Mar. 31, 1989
Applicant:
Inventors:
Tony Flaim, St. James, MO (US);
James Lamb, Rolla, MO (US);
Gregg Barnes, Lebanon, MO (US);
Terry Brewer, Rolla, MO (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03F / ; G03F / ;
U.S. Cl.
CPC ...
430313 ; 430299 ; 430327 ; 430323 ; 430271 ; 430330 ; 430325 ; 430326 ;
Abstract
Nonamic acidic functionalized diamines and dianhydrides are condensed to produce abnormal acid functionalized polyamic acid/imide resins which surprisingly afford effective lift-off, by alkaline media, even after higher imidization.