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:
Jan. 07, 1992
Filed:
Jul. 30, 1990
Applicant:
Inventors:
Darrell J Parish, Circleville, OH (US);
Morton Katz, Columbus, OH (US);
Assignee:
E. I. DuPont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
264105 ; 252511 ;
Abstract
A method for preparing an electrically conductive polyimide article having a polyimide matrix with carbon black and graphite particles uniformly dispersed therein. The method includes the steps of milling carbon black and graphite in a polar solvent to form a slurry, mixing the slurry with polyamide acid to form a dope, shaping the dope, and converting the shaped material into a polyimide article.