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. 22, 1992
Filed:
Oct. 09, 1991
Applicant:
Inventors:
Assignees:
Sumitomo Chemical Company, Limited, Osaka, JP;
Taoka Chemical Company, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09D / ; C07C / ;
U.S. Cl.
CPC ...
106 22 ; 534829 ; 534833 ; 534836 ;
Abstract
A disazo compound of the formula (I) in the free acid form, ##STR1## and an ink jet recording ink composition containing the same are provided, and the composition is superior in stability during storage or use, heat resistance, image clearness, water resistance and light fastness, and has a desirable tint as a red color.