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:
Nov. 18, 1980
Filed:
Aug. 24, 1978
Applicant:
Inventor:
Erich Kramer, Bergisch-Gladbach, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B / ;
U.S. Cl.
CPC ...
260157 ; 260158 ;
Abstract
The application relates to new azo dyestuffs which, in the form of the free acid, correspond to the general formula ##STR1## in which D, R, m and X have the meaning indicated in the description, their preparation and their use for dyeing and printing cellulose-containing materials, in particular paper and cotton.