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.:

US 7705167 B1

PDF
Full Text
Expired
Date of Patent:
Apr. 27, 2010

Filed:

Sep. 15, 2004
Applicants:

Koji Shinohara, Ichihara, JP;

Toshio Nakayama, Sodegaura, JP;

Inventors:

Koji Shinohara, Ichihara, JP;

Toshio Nakayama, Sodegaura, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 301/32 (2006.01); C07D 301/19 (2006.01);
U.S. Cl.
CPC ...
Abstract

A process for purifying propylene oxide, which comprises washing propylene oxide containing aldehydes and subsequently contacting an aqueous phase obtained with an extractant.


Find Patent Forward Citations

Shinohara, Koji. (2010). Process for purifying propylene oxide (U.S. Patent No. 7705167). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7705167

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