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:
Mar. 07, 2006
Filed:
Dec. 28, 2001
Heikki Heikkila, Espoo, FI;
Mika Manttari, Lappeenranta, FI;
Marianne Nystrom, Lappeenranta, FI;
Mirja Lindroos, Kirkkonummi, FI;
Hannu Paananen, Kantvik, FI;
Outi Puuppo, Espoo, FI;
Hannu Koivikko, Kantvik, FI;
Heikki Heikkila, Espoo, FI;
Mika Manttari, Lappeenranta, FI;
Marianne Nystrom, Lappeenranta, FI;
Mirja Lindroos, Kirkkonummi, FI;
Hannu Paananen, Kantvik, FI;
Outi Puuppo, Espoo, FI;
Hannu Koivikko, Kantvik, FI;
Danisco Sweeteners Oy, Espoo, FI;
Abstract
The invention relates to a process of separating compounds with a small molar mass from compounds having a molar mass less than 1.9 times that of the compounds with a small molar mass using nanofiltration. The compounds with a small molar mass have a typical molar mass less than 250 g/mol. In one embodiment of the invention, pentose sugars are separated from hexose sugars. The invention can be applied to the recovery of xylose from spent liquors and to the recovery of betaine from sugar beet pulp extracts, for example.