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. 12, 1985
Filed:
Dec. 16, 1982
Applicant:
Inventors:
Ulrich Buhler, Schoneck, DE;
Klaus Kuhlein, Kelkheim, DE;
Horst Tappe, Dietzenbach, DE;
Maria Kallay, Konigstein, DE;
Uwe Kosubek, Buttelborn, DE;
Rudolf Lowenfeld, Dreieich, DE;
Assignee:
Cassella Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
534886 ;
Abstract
Monoazo dyestuffs, free of carboxylic acid moieties or sulphonic acid moieties, of the formula ##STR1## wherein A and A' independently of one another are linear or branched alkylene having 2 to 6 carbon atoms;