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. 29, 2013
Filed:
Dec. 15, 2010
Frank J. Feher, Copley, OH (US);
John Kaluen Kan, San Mateo, CA (US);
Joseph C. Mcauliffe, Sunnyvale, CA (US);
Thomas F. Mccall, Overland Park, KS (US);
Stephan Rodewald, Canal Fulton, OH (US);
Timothy Alan Sabo, Southington, OH (US);
Tang Hong Wong, Hudson, OH (US);
Christopher D. Ploetz, Fairway, KS (US);
Lawrence J. Pickert, Overland Park, KS (US);
Frank J. Feher, Copley, OH (US);
John Kaluen Kan, San Mateo, CA (US);
Joseph C. McAuliffe, Sunnyvale, CA (US);
Thomas F. McCall, Overland Park, KS (US);
Stephan Rodewald, Canal Fulton, OH (US);
Timothy Alan Sabo, Southington, OH (US);
Tang Hong Wong, Hudson, OH (US);
Christopher D. Ploetz, Fairway, KS (US);
Lawrence J. Pickert, Overland Park, KS (US);
Danisco US Inc., Palo Alto, CA (US);
The Goodyear Tire & Rubber Company, Akron, OH (US);
Abstract
Methods and apparatus for the purification of isoprene, such as the purification of a bioisoprene composition from fermentor off-gas. The apparatus includes two columns that process the fermentor off-gas, which includes isoprene and various impurities. A solvent is added to the off-gas in the first column, and the isoprene is stripped from the solvent in the second column. Also provided is a downstream further purification process. Also provided are the resulting purified isoprene compositions.