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. 31, 2004
Filed:
Jun. 13, 2003
Applicant:
Inventors:
Peter Blaschka, Ludwigshafen, DE;
Günter Smeyts, Meckenheim, DE;
Paul Günthert, Schifferstadt, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, US;
Primary Examiner:
Int. Cl.
CPC ...
C09B 6/720 ; C09B 2/946 ; D06P 5/08 ;
U.S. Cl.
CPC ...
C09B 6/720 ; C09B 2/946 ; D06P 5/08 ;
Abstract
The invention relates to pyrazolone pigments of general formula (I), wherein the radicals R , R , R and R independently represent hydrogen, chlorine, methyl or ethyl, whereby at least one of the radicals R -R is different from hydrogen. The inventive pigments are characterised by a CIELAB colour angle of 80-85°, a chroma of 58-62 and a luminosity ≧87 (measuring angle 45°, standard illuminant D65).