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:
Sep. 11, 1979
Filed:
Sep. 13, 1977
Applicant:
Inventors:
Keizo Shimada, Hino, JP;
Toshiaki Harada, Iwakuni, JP;
Masahiro Koga, Iwakuni, JP;
Shizuo Nagahama, Hino, JP;
Hiroyoshi Minematsu, Iwakuni, JP;
Hidetsugu Yoshida, Iwakuni, JP;
Assignee:
Teijin Limited, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260 4214 ; 260 4221 ; 260 4245 ; 260 4248 ; 1062 / ; 8 1 / ; 546 36 ; 546 51 ; 546 70 ; 544125 ;
Abstract
A group of novel polynuclear heterocyclic compounds having a diazaphenalene skeleton. These compounds assume orange to reddish violet colors according to the types of substituents on the diazaphenalene skeleton, and have excellent thermal stability and weatherability and good dispersibility in polymeric materials. They are useful as orange to reddish violet pigments, especially for coloring polymeric materials.