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 8177891 B1

PDF
Full Text
Expired
Date of Patent:
May. 15, 2012

Filed:

May. 26, 2008
Applicants:

Akira Kase, Holland, NL;

Yujiro Itami, Holland, NL;

Inventors:

Akira Kase, Holland, NL;

Yujiro Itami, Holland, NL;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 53/22 (2006.01);
U.S. Cl.
CPC ...
Abstract

The present invention relates to a membrane wherein said membrane comprises a polymerized composition that comprised prior to polymerization at least one type of compound comprising at least 70 oxyethylene groups and at least two polymerizable groups. The invention further relates to the use of this membrane for separating polar gases and vapors.


Find Patent Forward Citations

Kase, Akira. (2012). Membrane comprising oxyethylene groups (U.S. Patent No. 8177891). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8177891

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