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:
Feb. 04, 2025
Filed:
Jan. 03, 2020
Applicant:
Metgen Oy, Kaarina, FI;
Inventors:
Anu Minna Maaret Suonpää, Kaarina, FI;
Matti Wilhelm Heikkilä, Kaarina, FI;
Joana Raquel Amaral Antunes, Kaarina, FI;
Klara Birikh, Kaarina, FI;
Assignee:
Metgen OY, Kaarina, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07G 1/00 (2011.01); C08J 11/10 (2006.01);
U.S. Cl.
CPC ...
C07G 1/00 (2013.01); C08J 11/10 (2013.01);
Abstract
The invention relates to obtaining lignin preparations of desirable molecular size and properties. It describes a method of de-polymerizing lignin of high molecular weight into low molecular weight lignin. More in particular, the invention provides a method for producing lignin with a low molecular weight wherein high molecular weight lignin is contacted with an alkaline laccase at alkaline pH in a reaction vessel and wherein the lignin with a molecular weight below 2 kDa is selectively removed from the reaction vessel during the reaction.