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:
Jun. 16, 2015
Filed:
Mar. 16, 2011
Masateru Ito, Kamakura, JP;
Izumi Morita, Kamakura, JP;
Shinichi Yamane, Tokyo, JP;
Katsushige Yamada, Kamakura, JP;
Masateru Ito, Kamakura, JP;
Izumi Morita, Kamakura, JP;
Shinichi Yamane, Tokyo, JP;
Katsushige Yamada, Kamakura, JP;
TORAY INDUSTRIES, INC., Tokyo, JP;
Abstract
Highly pure butanol can be produced by a method for producing butanol, the method comprising: Step A, wherein a butanol-containing solution is filtered through a nanofiltration membrane and a butanol-containing solution is recovered from the permeate side; Step B, wherein the butanol-containing solution obtained in Step A is passed through a reverse osmosis membrane and thereby concentrated to cause two-phase separation into a butanol phase and an aqueous phase; and Step C, wherein butanol is recovered from the butanol phase obtained in Step B.