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:
Nov. 25, 2014
Filed:
Dec. 09, 2008
Applicants:
John Martin Farrar, Leeds, GB;
Andrew Clive Jackson, Münchenstein, CH;
Margaret Mahon, West Yorkshire, GB;
Martin Oberholzer, Witterswil, CH;
Inventors:
John Martin Farrar, Leeds, GB;
Andrew Clive Jackson, Münchenstein, CH;
Margaret Mahon, West Yorkshire, GB;
Martin Oberholzer, Witterswil, CH;
Assignee:
Clariant Finance (BVI) Limited, Tortola, VG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 21/30 (2006.01); D21H 17/07 (2006.01); D21H 17/09 (2006.01); D21H 23/04 (2006.01); D21H 23/22 (2006.01); C09K 11/00 (2006.01); C09K 11/06 (2006.01); C07D 251/00 (2006.01); C07D 251/38 (2006.01); C07D 251/40 (2006.01);
U.S. Cl.
CPC ...
Abstract
The instant invention relates to storage stable solutions of optical brighteners based on certain salt forms of anilino-substituted bistriazinyl derivatives of 4,4'-diaminostilbene-2,2′-disulphonic acid and of organic acids which do not need extra solubilizing additives.