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:
May. 26, 1992
Filed:
Oct. 01, 1990
Applicant:
Inventors:
M Jean-Luc Fuentes, Villenave D'ornon, FR;
M Christian Rousset, Biganos, FR;
M Gerard Goma, Ramonville, FR;
M Jean-Claude Pommier, Gradignan, FR;
Assignee:
LA Cellulose Du Pin, Bordeaux, FR;
Primary Examiner:
Int. Cl.
CPC ...
D21H / ;
U.S. Cl.
CPC ...
162 71 ; 162 72 ; 435277 ; 435278 ;
Abstract
A process for treating paper pulp using an enzyme composition. An enzyme composition containing cellulases or hemicellulases selected from among those derived from the fungus Humicola insolens and from the bacterium Cellulomonas is made to act upon an aqueous suspesnion of the pulp possessing a given Schopper-Riegler level (SR) according to Standard NFQ 50 003. This procedure is particularly useful for treating a recycled fiber-based paper pulp having a pH of at least 5.