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:
Nov. 07, 2017
Filed:
Oct. 31, 2014
Toray Industries, Inc., Tokyo, JP;
Shunsuke Tabayashi, Ehime, JP;
Hiroho Hirozawa, Otsu, JP;
Kentaro Takagi, Otsu, JP;
Yoshie Marutani, Otsu, JP;
Yoshiki Okamoto, Otsu, JP;
Hiroyuki Yamada, Otsu, JP;
Shuji Furuno, Otsu, JP;
Takao Sasaki, Otsu, JP;
Masahiro Kimura, Otsu, JP;
Toray Industries, Inc., Tokyo, JP;
Abstract
A separation membrane element of the present invention includes: a water collection tube; and a plurality of separation membrane leaves stacked on each other and wound around the water collection tube, each of the separation membrane leaves includes one or more separation membranes each having a feed-side face and a permeate-side face and is configured so that the feed-side faces face each other, and a sheet having a plurality of projections fixed thereto is provided between the permeate-side faces of the separation membrane leaves stacked on each other. Regarding a height of the projections, a ratio of the maximum height to the minimum height is from 1.10 to 1.50, and a variation coefficient of the height is from 0.02 to 0.15, and an impregnation ratio of the projections into the sheet is from 10% to 100%.