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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.:

US 4167506 B1

PDFFull Text
Date of Patent:
Sep. 11, 1979

Filed:

Sep. 13, 1977

Diazaphenalene derivatives and resin containing color compositions

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:

Wenderoth, Lind & Ponack

Primary Examiner:

David E Wheeler

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.

Find Patent Forward Citations

Shimada, Keizo. (1979). Diazaphenalene derivatives and resin containing color compositions (U.S. Patent No. 4167506). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4167506

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