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:
Sep. 30, 2025
Filed:
Jun. 26, 2021
Applicant:
Upm-kymmene Corporation, Helsinki, FI;
Inventor:
Mauno Miettinen, Lappeenranta, FI;
Assignee:
UPM-KYMMENE CORPORATION, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07G 1/00 (2011.01); B01J 31/00 (2006.01); B01J 31/02 (2006.01); B01J 37/36 (2006.01); C08H 7/00 (2011.01);
U.S. Cl.
CPC ...
C07G 1/00 (2013.01); B01J 31/003 (2013.01); B01J 31/0277 (2013.01); B01J 37/36 (2013.01); C08H 6/00 (2013.01);
Abstract
The invention relates to a method and an apparatus for forming a lignin fraction from crude lignin which has been processed by means of a treatment step selected from enzymatic treatment, treatment with ionic liquid and their combinations. The method comprises treating the crude lignin () by a lignin liberation in at least one lignin liberation step (), and separating a lignin fraction () in at least one separation step (). Further, the invention relates to a lignin composition and its use.