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.

Date of Patent:
Jan. 29, 1991

Filed:

Dec. 20, 1989
Applicant:
Inventors:

Toshio Hihara, Kitakyushu, JP;

Kanzi Shimizu, Kitakyushu, JP;

Yukiharu Shimizu, Kitakyushu, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B / ; C09B / ; D06P / ; D06P / ;
U.S. Cl.
CPC ...
534632 ; 534617 ; 534638 ; 534642 ;
Abstract

A water-soluble monoazo colorant represented by formula (I) in a form of a free acid: ##STR1## wherein D represents ##STR2## (wherein W.sup.2 represents lower alkoxy; U represents lower alkyl or lower alkoxy; Z represents --CH.dbd.CH.sub.2 or --CH.sub.2 CH.sub.2 OSO.sub.3 H and p and q represent each 0 or 1);


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Hihara, Toshio. (1991). Water soluble monoazo dye-stuffs containing vinylsulfone and (U.S. Patent No. 4988801). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4988801

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