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:
May. 18, 1993
Filed:
Jun. 10, 1991
Applicant:
Inventors:
Karl-Josef Herd, Odenthal-Holz, DE;
Karl-Heinz Schundehutte, deceased, late of Leverkusen, DE;
Eva Schundehutte, heir, Leverkusen, DE;
Horst Jager, Leverkusen, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09B / ; D06P / ;
U.S. Cl.
CPC ...
534633 ; 534632 ; 534887 ;
Abstract
Dyestuffs in the form of their free acid have the following formula (1) ##STR1## in which the substituents have the meaning given in the description. The dyestuffs according to the invention are suitable for dyeing hydroxyl-containing fiber materials in yellow shades.