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. 02, 1983
Filed:
May. 07, 1981
Applicant:
Inventors:
Clarence D Bertino, Houston, TX (US);
Robert W Hill, Houston, TX (US);
James E Owen, Shaker Heights, OH (US);
Assignee:
Gulf Oil Corporation, Pittsburgh, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C09B / ; C09B / ; C06P / ; C06P / ;
U.S. Cl.
CPC ...
260152 ; 1062 / ; 260141 ; 260205 ; 260206 ; 428500 ;
Abstract
The products of the invention are high melting, highly insoluble N,N'-bis(arylazo)diimides prepared by reacting 2 mols of an arylazoaromatic amine with pyromellitic acid dianhydride or 3,3',4,4'-benzophenone tetracarboxylic acid dianhydride. The products are colored and useful as pigments in surface coating compositions and plastics.