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. 05, 2020
Filed:
May. 19, 2015
Applicant:
Gpcp Ip Holdings Llc, Atlanta, GA (US);
Inventor:
Jeffrey A. Lee, Neenah, WI (US);
Assignee:
GPCP IP Holdings LLC, Atlanta, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D04H 1/492 (2012.01); D04H 1/42 (2012.01); D06L 4/30 (2017.01); D06L 4/13 (2017.01);
U.S. Cl.
CPC ...
D04H 1/492 (2013.01); D04H 1/42 (2013.01); D06L 4/13 (2017.01); D06L 4/30 (2017.01);
Abstract
The present invention is directed to a method of increasing the brightness of non-wood fibers. The method comprises forming a mixture of non-wood fibers and exposing the mixture to a brightening agent, the brightening agent being a permanganate compound, an acid, or a combination of the permanganate compound and the acid. The resulting brightened fibers have a brightness greater than the fibers of the mixture before exposure as measured by MacBeth UV-C standard.