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:
Aug. 11, 1992
Filed:
Nov. 13, 1990
Applicant:
Inventors:
Marvin J Burgess, Lisle, IL (US);
Douglas E Fjare, Naperville, IL (US);
Herbert J Neuhaus, Naperville, IL (US);
Robert T Roginski, Lisle, IL (US);
David A Wargowski, Naperville, IL (US);
Assignee:
Amoco Corporation, Chicago, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427123 ; 427379 ; 427404 ; 4274071 ;
Abstract
A polyimide layer having a thickness greater than about 5 microns is formed on a substrate by coating a substrate with a solution of polymer and a solvent of the formula ##STR1## wherein R.sub.1 and R.sub.2 are independently a hydrogen, a C.sub.1 to C.sub.6 alkyl moiety, or a ##STR2## R.sub.5 is a C.sub.1 to C.sub.6 alkyl moiety; and R.sub.3 and R.sub.4 are independently hydrogen or a C.sub.1 to C.sub.6 alkyl moiety, and curing the resulting coated substrate.