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. 26, 2014
Filed:
Oct. 03, 2005
Fredrik Öhman, Gavle, SE;
Hans Theliander, Göteborg, SE;
Magnus Norgren, Matfors, SE;
Per Tomani, Huddinge, SE;
Peter Axegård, Solna, SE;
Fredrik Öhman, Gavle, SE;
Hans Theliander, Göteborg, SE;
Magnus Norgren, Matfors, SE;
Per Tomani, Huddinge, SE;
Peter Axegård, Solna, SE;
LignoBoost AB, Stockholm, SE;
Abstract
A method for precipitating (separation) of lignin, using small amounts of acidifying agents, whereby a lignin product or an intermediate lignin product is obtained which can be used as fuel or chemical feed stock (or as a chemical or a raw material for further refining), from a lignin containing liquid/slurry, such as black liquor. A method for separation of lignin from a lignin containing liquid/slurry, such as black liquor, whereby a more pure lignin is obtained, a lignin product or an intermediate lignin product obtainable by the above methods, and use, preferably for the production of heat or for use as chemical, of the lignin product or intermediate lignin product are also disclosed.