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:
Aug. 06, 2024
Filed:
Jan. 31, 2020
Applicants:
Andritz Oy, Helsinki, FI;
Metsä Fibre Oy, Metsä, FI;
Teknologian Tutkimuskeskus Vtt Oy, Espoo, FI;
Inventors:
Lauri Pehu-Lehtonen, Helsinki, FI;
Pauliina Sjögård, Helsinki, FI;
Outi Poukka, Metsä, FI;
Katariina Kemppainen, Metsä, FI;
Anna Kalliola, Espoo, FI;
Tiina Liitiä, Espoo, FI;
Tapio Vehmas, Espoo, FI;
Assignees:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21C 11/00 (2006.01); C08H 7/00 (2011.01); D21H 11/04 (2006.01);
U.S. Cl.
CPC ...
D21C 11/0007 (2013.01); C08H 6/00 (2013.01); D21C 11/0042 (2013.01); D21C 11/0057 (2013.01); D21H 11/04 (2013.01);
Abstract
According to an example aspect of the present invention, there is provided a method for producing an oxidised lignin based high performance surface active agent in techno-economically feasible manner within kraft pulp mill without interfering the main process.