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. 24, 2012
Filed:
Mar. 29, 2010
Applicants:
Michael Lennartz, Lörrach, DE;
Adolf Käser, Bottmingen, CH;
Sandra Weiss, Lörrach-Brombach, DE;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B 35/023 (2006.01); C09B 35/03 (2006.01); C09B 35/033 (2006.01); C09B 35/28 (2006.01); D06P 1/39 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to novel yellow anionic dyes, a process for their preparation, certain novel intermediates necessary for their preparation and the use of these dyes for dyeing natural or synthetic materials, in particular, paper. The dyes are of formula (14), (15) or (16) in which