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:
Apr. 14, 2025
Filed:
Feb. 25, 2021
Applicant:
Sixring Inc., Calgary, CA;
Inventors:
Clay Purdy, Medicine Hat, CA;
Markus Weissenberger, Calgary, CA;
Kyle G. Wynnyk, Calgary, CA;
Karl W. Dawson, Calgary, CA;
Assignee:
SIXRING INC., Calgary, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21C 3/06 (2005.12); C01B 15/08 (2005.12); D21C 1/04 (2005.12); D21C 3/00 (2005.12);
U.S. Cl.
CPC ...
D21C 3/06 (2012.12); C01B 15/08 (2012.12); D21C 3/006 (2012.12);
Abstract
Method of delignification of plant material, said method comprising: providing said plant material comprising cellulose fibers and lignin; exposing said plant material requiring to a composition comprising: alkanesulfonic acid; and a peroxide, wherein said alkylsulfonic acid and peroxide are present in a molar ratio ranging 1:1 to 15:1 and the time of exposure is sufficient to remove substantially all of the lignin present on said plant material. Compositions capable of achieving delignification are also disclosed.