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. 18, 1989
Filed:
Apr. 19, 1988
Applicant:
Inventors:
Richard D Diller, deceased, late of Gilroy, CA (US);
Anthony F Arnold, Poughkeepsie, NY (US);
Ying Ying Cheng, San Jose, CA (US);
Patricia M Cotts, Menlo Park, CA (US);
Donald C Hofer, San Martin, CA (US);
Mahmoud Khojasteh, Wappingers Falls, NY (US);
Elwood H Macy, Hughsonville, NY (US);
Prabodh R Shah, Wappingers Falls, NY (US);
Willi Volksen, San Jose, CA (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528353 ; 528351 ; 524252 ; 4273855 ;
Abstract
A composition for the application of a planar polyimide coating having a glass transition temperature above 300.degree. C. comprises a solution in an anhydrous, aprotic solvent of an aromatic diamine and a dialkyldihydrogen pyromellitate which is more than 90% meta isomer.