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. 26, 2012
Filed:
Oct. 23, 2008
Applicants:
Atsushi Shimizu, Tokyo, JP;
Masao Kondo, Tokyo, JP;
Junichi Yamamoto, Tokyo, JP;
Inventors:
Assignee:
Asahi Kasei Chemicals Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 53/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
Problem to be Solved: To provide a gas separation membrane having an excellent performance balance (balance between gas permeation performance and gas separation ability) as a gas separation membrane. Solution: A gas separation membrane comprising a porous support member and a gas separating resin layer formed on the porous support member, wherein the porous support member has a mode diameter as measured by a mercury porosimeter of from 0.005 μm to 0.3 μm, and a pore size distribution index as measured by the mercury porosimeter of from 1 to 15.