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. 06, 2012
Filed:
Aug. 27, 2008
Applicants:
Nicholas P. Wynn, Palo Alto, CA (US);
Yu Huang, Palo Alto, CA (US);
Masakatsu Urairi, Palo Alto, CA (US);
Richard W Baker, Palo Alto, CA (US);
Inventors:
Nicholas P. Wynn, Palo Alto, CA (US);
Yu Huang, Palo Alto, CA (US);
Masakatsu Urairi, Palo Alto, CA (US);
Richard W Baker, Palo Alto, CA (US);
Assignee:
Nitto Denko Corporation, Osaka, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01D 3/00 (2006.01); C07C 45/82 (2006.01); C07C 29/80 (2006.01); C07C 51/44 (2006.01);
U.S. Cl.
CPC ...
Abstract
Processes for removing water from organic solvents, such as ethanol. The processes include distillation in two columns operated at sequentially higher pressure, followed by treatment of the overhead vapor by one or two membrane separation steps.