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:
Jul. 23, 2013
Filed:
Apr. 21, 2009
Applicants:
Jarmo Reunanen, Oulu, FI;
Pekka Oinas, Kokkola, FI;
Timo Nissinen, Ylojarvi, FI;
Esko Tirronen, Espoo, FI;
Inventors:
Jarmo Reunanen, Oulu, FI;
Pekka Oinas, Kokkola, FI;
Timo Nissinen, Ylojarvi, FI;
Esko Tirronen, Espoo, FI;
Assignee:
Kemira Oyj, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 51/00 (2006.01); C07C 53/00 (2006.01); C07D 307/48 (2006.01);
U.S. Cl.
CPC ...
Abstract
Processes for the recovery of formate salt from biomass and the product obtained thereof generally include subjecting an aqueous liquid mixture containing levulinic acid, formic acid and possibly furfural to a liquid-liquid extraction process, followed by the recovery of the furfural, the formate salt and the levulinic acid or the levulinate salt.