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:
Jan. 29, 2013
Filed:
Dec. 18, 2009
Shinichi Chikura, Ibaraki, JP;
Satoru Ishihara, Ibaraki, JP;
Mitsuaki Hirokawa, Ibaraki, JP;
Yasuhiro Uda, Ibaraki, JP;
Shinichi Chikura, Ibaraki, JP;
Satoru Ishihara, Ibaraki, JP;
Mitsuaki Hirokawa, Ibaraki, JP;
Yasuhiro Uda, Ibaraki, JP;
Nitto Denko Corporation, Osaka, JP;
Abstract
An object of the invention is to provide a spiral separation membrane element that can reduce the pressure loss of a feed-side channel and be much less vulnerable to the problem of inhibition or blockage of the flow in the feed-side channel. The spiral separation membrane element includes one or more separation membranes, one or more feed-side channel components, one or more permeation-side channel components, and a perforated hollow core tube around which the separation membranes, the feed-side channel components and the permeation-side channel components are wrapped, wherein the feed-side channel component is a net formed by fusion bonding.