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:
Dec. 03, 1996
Filed:
Mar. 23, 1995
Applicant:
Inventors:
Horst Berneth, Leverkusen, DE;
Uwe Claussen, Leverkusen, DE;
Werner Hartwich, K oln, DE;
Peter Wild, Odenthal, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B / ; D06P / ; D06P / ; D21H / ;
U.S. Cl.
CPC ...
534607 ; 534608 ; 548141 ; 8437 ; 8506 ; 8510 ; 8655 ; 8917 ; 8919 ; 106 / ;
Abstract
Cationic 1,3,4-thiadiazole dyestuffs of the formula ##STR1## in which the symbols used have the meaning given in the description, corresponding anhydrobases, processes for the preparation of the cationic 1,3,4-thiadiazole dyestuffs, their use for dyeing and printing various materials and as dichroic dyestuffs in polarizing films, and various materials which comprise such dyestuffs.