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:
Jun. 12, 2007
Filed:
May. 03, 2005
Applicants:
Prasad Y. Duggirala, Naperville, IL (US);
Sergey M. Shevchenko, Aurora, IL (US);
Kristine S. Salmen, Naperville, IL (US);
Inventors:
Prasad Y. Duggirala, Naperville, IL (US);
Sergey M. Shevchenko, Aurora, IL (US);
Kristine S. Salmen, Naperville, IL (US);
Assignee:
Nalco Company, Naperville, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21B 1/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method to enhance brightness in Chemical and Mechanical pulps comprising adding an organic sulfide chelant is described and claimed. A method to enhance delignification in a Chemical pulp comprising adding an organic sulfide chelant is also described and claimed.