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. 14, 2010
Filed:
Dec. 30, 2008
Applicants:
Peter Erk, Frankenthal, DE;
Simone Schaefer, Kleinfischlingen, DE;
Arno Boehm, Mannheim, DE;
Peter Blaschka, Ludwigshafen, DE;
Harald Arms, Hohen-Suelzen, DE;
Willi Helfer, Friedelsheim, DE;
Inventors:
Peter Erk, Frankenthal, DE;
Simone Schaefer, Kleinfischlingen, DE;
Arno Boehm, Mannheim, DE;
Peter Blaschka, Ludwigshafen, DE;
Harald Arms, Hohen-Suelzen, DE;
Willi Helfer, Friedelsheim, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09B 3/14 (2006.01); C07D 471/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for converting perylene-3,4:9,10-tetracarboximides of the general formula I in which Rand Rare each unbranched, branched or cyclic C-C-alkyl to a form suitable for use as fluorescent dyes, which comprises