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. 08, 2007
Filed:
Jan. 16, 2001
Applicants:
Ruth Elizabeth Bowdery, Wolverhampton, GB;
Stephanie Edmunds, Willenhall, GB;
Robert Eric Talbot, Staffordshire, GB;
Inventors:
Ruth Elizabeth Bowdery, Wolverhampton, GB;
Stephanie Edmunds, Willenhall, GB;
Robert Eric Talbot, Staffordshire, GB;
Assignee:
Rhodia Consumer Specialties Limited, Oldbury, West Midlands, GB;
Primary Examiner:
Int. Cl.
CPC ...
D21C 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Pulping liquors used in the bleaching of pulps by hydrogen peroxide, and containing catalase-producing bacteria and/or catalase enzyme are treated with tris (hydroxymethyl) phosphine or a tetrakis (hydroxymethyl) phosphonium salt to kill the bacteria and destroy the enzyme.