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. 20, 1999
Filed:
Jan. 30, 1997
Applicant:
Inventors:
Toru Harada, Kanagawa, JP;
Itsuo Fujiwara, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
C07F / ; C07F / ; G03G / ; D06P / ;
U.S. Cl.
CPC ...
556-1 ; 556 27 ; 556182 ; 534 12 ; 534 15 ; 430341 ; 8506 ; 8522 ;
Abstract
Novel Schiff base quinone complexes are provided. They are useful as anti-fading agents and filter dyes. The anti-fading agents are applicable to heat developable photosensitive materials, silver halide photosensitive materials, and optical recording materials.