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:
May. 27, 2014
Filed:
Mar. 30, 2011
Applicants:
Hiroki Hisamori, Ube, JP;
Tatsuya Hayashi, Ube, JP;
Seiji Morihashi, Ube, JP;
Tomonori Kanougi, Ichihara, JP;
Inventors:
Hiroki Hisamori, Ube, JP;
Tatsuya Hayashi, Ube, JP;
Seiji Morihashi, Ube, JP;
Tomonori Kanougi, Ichihara, JP;
Assignee:
Ube Industries, Ltd., Ube-shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 53/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to an asymmetric hollow fiber membrane for gas separation made of a soluble aromatic polyimide, wherein an orientation index is 1.3 or less, a separation coefficient α(P'O/P′N) as a permeation rate ratio of oxygen gas/nitrogen gas at 40° C. is 5.3 or more, and a tensile fracture elongation is 15% or more.