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. 13, 2010
Filed:
Jun. 06, 2005
Merja Penttilä, Helsinki, FI;
Matti Siika-aho, Helsinki, FI;
Jaana Uusitalo, Espoo, FI;
Liisa Viikari, Helsinki, FI;
Merja Penttilä, Helsinki, FI;
Matti Siika-Aho, Helsinki, FI;
Jaana Uusitalo, Espoo, FI;
Liisa Viikari, Helsinki, FI;
Valtion Teknillinen Tutkimuskeskus, Espoo, FI;
Abstract
A process for producing ethanol from a fibrous lignocellulosic raw material. After pre-treatment of the raw material, the fibrous fraction is first hydrolysed at high consistency and then the modified material is subjected simultaneously to continued hydrolysis with a cellulase and to ethanol fermentation in a fermentation mixture. Fermentation is continued to convert an essential portion of the available cellulose into ethanol, then a liquid fraction containing solubilized hemicelluloses is added to the fermentation mixture and fermentation continued. By means of the invention, high fermentation rates, high ethanol concentrations and low ethanol production costs can be attained.