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:
Jan. 25, 2005
Filed:
Aug. 14, 2001
Applicants:
Hellmut Kast, Bobenheim-Roxheim, DE;
Thomas Gessner, Heidelberg, DE;
Rainer Tresch, Maxdorf, DE;
Inventors:
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C09B 1118 ; C09D 1100 ;
U.S. Cl.
CPC ...
Abstract
Described is a triarylmethane dye of the formula I where Rand Rare independently methyl, ethyl or hydroxyethyl, Q is substituted or unsubstituited phenyl or naphthyl and Ais the equivalent of an anion. It does not detach carcinogenic Michler's ketone.