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:
May. 17, 1977
Filed:
Jan. 07, 1976
Applicant:
Inventor:
Werner Fringeli, Basel, CH;
Assignee:
Ciba-Geigy Corporation, Ardlsey, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
25230123 ; 162162 ; 2602 / ; 427158 ;
Abstract
The 4,4'-bis-[2',4'-bis-(diisopropanolamino)-s-triazin-6'-yl-amino]-stilbene-2 ,2'-disulphonic acid, its manufacture as well as its use as optical brightener for natural or synthetic polyamides and especially for paper is disclosed.