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. 09, 1996
Filed:
Sep. 09, 1993
Applicant:
Inventor:
Axel von Raven, Seeshaupt, DE;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D06L / ; D21C / ;
U.S. Cl.
CPC ...
8110 ; 8107 ; 81081 ; 8109 ; 81161 ; 8194 ; 8196 ; 8181 ; 8648 ; 252-87 ; 25230121 ; 162 72 ; 162 74 ; 162 76 ; 162 79 ;
Abstract
The present invention relates to the addition of photosensitising compounds to woodpulps and mixtures thereof for enhancing their whiteness, brightness and chromaticity, as well as to the paper making fibres so obtained and the use thereof.
von Raven, Axel. (1996). Process for enhancing the whiteness, brightness and chormaticity of (U.S. Patent No. 5482514). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5482514
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile