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:
Mar. 23, 1976
Filed:
Feb. 19, 1974
Applicant:
Inventors:
Rudolf Rokohl, Ludwigshafen, DT;
Rolf Fikentscher, Ludwigshafen, DT;
Herbert Helfert, Trenton, MI (US);
Assignee:
BASF Aktiengesellschaft, Ludwigshafen (Rhine), DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D06P / ;
U.S. Cl.
CPC ...
8172 / ; 8 73 ; 8 84 ; 8177 / ;
Abstract
Acrylonitrile polymer fibers are dyed level shades with basic dyes using as leveling agent a quaternary ammonium salt containing two or three benzyl groups as nitrogen ligands.