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:
Jul. 27, 1993
Filed:
Apr. 01, 1992
Applicant:
Inventors:
Karl-Heinz Keil, Hanau-Mittelbuchen, DE;
Thomas Martini, Kelkheim, DE;
Assignee:
Cassella AG, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D06M / ; D06M / ; D06P / ; D06P / ;
U.S. Cl.
CPC ...
8652 ; 8553 ; 8554 ; 8650 ; 8918 ; 8552 ;
Abstract
Water-soluble sulphur dyes can be applied to cellulose without reducing agents, without added salt and without oxidising agents if the cellulose has been grafted with a polymer obtained by polymerisation of at least one N-containing basic monomer.