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. 13, 2008
Filed:
Nov. 19, 2004
Ronald Peter Van Heek, Prince George, CA;
Gilles Marcel Dorris, Vimont, CA;
Victor Charles Uloth, Prince George, CA;
Natalie Page, Laval, CA;
Thomas Qiuxiong HU, Vancouver, CA;
Denys Francois Leclerc, Vancouver, CA;
Ronald Peter van Heek, Prince George, CA;
Gilles Marcel Dorris, Vimont, CA;
Victor Charles Uloth, Prince George, CA;
Natalie Page, Laval, CA;
Thomas Qiuxiong Hu, Vancouver, CA;
Denys Francois Leclerc, Vancouver, CA;
FPInnovations, Pointe-Claire, Quebec, CA;
Abstract
Oxidized white liquor is heat treated to increase the concentration of polysulphide measured at 285 or 286 nm (PS) or measured at 416 nm (PS) and the PS/PSor PS/PSratio, whereby the content of active polysulphide in the total polysulphide is increased which active polysulphide can be exploited to increase pulp yield in Kraft pulping.