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:
Jun. 08, 2004
Filed:
Mar. 27, 2002
Applicant:
Inventor:
Jordi Berenguer, El Prat de Llobregat, ES;
Assignee:
Clariant Finance (BVI) Limited, Tortola, VG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B 3/560 ; C09B 3/562 ; C09B 6/722 ; D06P 3/32 ;
U.S. Cl.
CPC ...
C09B 3/560 ; C09B 3/562 ; C09B 6/722 ; D06P 3/32 ;
Abstract
Tetrakisazo dyes of formula (I), as defined in claim optionally in admixture with trisazo dyes of formula (X) as defined in claim are valuable anionic dyes for the dyeing of substrates dyeable with anionic dyes, in particular for the dyeing of leather in very intense dark shades.