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:
Aug. 10, 1993
Filed:
Jan. 29, 1992
Applicant:
Inventors:
Manfred Hahnke, Kelkheim, DE;
Ullrich Saalfrank, Eppstein/Taunus, DE;
Claus Schuster, Hofheim am Taunus, DE;
Joachim Steinbach, Frankfurt am Main, DE;
Gerd Krauzpaul, Liederbach, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D06P / ; D06P / ;
U.S. Cl.
CPC ...
8561 ; 8618 ; 8650 ; 8651 ; 8652 ; 8918 ;
Abstract
Cellulose fibers are dyed ecologically soundly with sulfur black dyes by the pad-dyeing process by avoiding sulfides as reducing agent by replacing them by a dithionite-based mixture with at least one reducing sugar. A high color yield, a deep black shade and good reproducibility are ensured. The preferred reducing sugar is glucose.
Hahnke, Manfred. (1993). Pad-dyeing of cellulose fibers with sulfur black dyes: mixture of (U.S. Patent No. 5234465). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5234465
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile