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. 30, 2021
Filed:
Dec. 14, 2018
Applicant:
Archroma Ip Gmbh, Reinach, CH;
Inventors:
Cristina Dominguez, Saint-Louis, FR;
Andrew Jackson, Muenchenstein, CH;
David Atkinson, Arlesheim, CH;
Meral Ilhan, Hirsingue, FR;
Marc Bukowski, Rheinfelden, DE;
Assignee:
Archroma IP GmbH, Reinach, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 403/12 (2006.01); D21H 17/09 (2006.01); D21H 21/32 (2006.01);
U.S. Cl.
CPC ...
C07D 403/12 (2013.01); D21H 17/09 (2013.01); D21H 21/32 (2013.01);
Abstract
The invention relates to an optical brightener for whitening and brightening of paper, board, textiles and non-wovens, a process for manufacturing said optical brightener, the use of said brightener in paper making processes and a process for whitening paper.