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:
Oct. 17, 2006
Filed:
Mar. 13, 2003
Dan L. Fanselow, White Bear Lake, MN (US);
James S. Mrozinski, Oakdale, MN (US);
Todd W. Johnson, Minneapolis, MN (US);
Brinda B. Lakshmi, Woodbury, MN (US);
Dan L. Fanselow, White Bear Lake, MN (US);
James S. Mrozinski, Oakdale, MN (US);
Todd W. Johnson, Minneapolis, MN (US);
Brinda B. Lakshmi, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A method for obtaining ethanol from a feed solution utilizes an extractant comprising a mixture of at least one alkane and at least one aliphatic alcohol having the formula wherein R, R, R, R, R, and Reach independently represent H or a straight chain alkyl group having from 1 to 4 carbon atoms; Rrepresents a straight chain alkyl group having from 1 to 4 carbon atoms, or taken together Rand Rrepresent an alkylene group having from 1 to 4 carbon atoms; and m and n independently represent 0, 1, 2, or 3, with the proviso that if Rrepresents H, then at least two of R, R, and R, or at least one of Rand R, are straight chain alkyl groups having from 1 to 4 carbon atoms.