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:
Jan. 24, 1995
Filed:
Sep. 30, 1993
Applicant:
Inventors:
Wolfgang Bauer, Maintal, DE;
Gert Nagl, Niederdorfelden, DE;
Willi Steckelberg, Hofheim/Ts, DE;
Josef Ritter, Bad Soden, DE;
Wilhelm Mauelshagen, Bad Camberg, DE;
Assignee:
Cassella AG, Frankfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D / ;
U.S. Cl.
CPC ...
106 / ; 106 / ; 568 76 ;
Abstract
The black water-soluble sulphur dyes of the formula ##STR1## in which, for example, F is the dye chromophore of C.I. Leuco Sulphur Black 1,