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:
Sep. 19, 2017
Filed:
Mar. 23, 2012
Hiroho Hirozawa, Otsu, JP;
Hiroshi Umetani, Otsu, JP;
Masakazu Koiwa, Otsu, JP;
Kentarou Takagi, Otsu, JP;
Masahiro Kimura, Otsu, JP;
Hiroho Hirozawa, Otsu, JP;
Hiroshi Umetani, Otsu, JP;
Masakazu Koiwa, Otsu, JP;
Kentarou Takagi, Otsu, JP;
Masahiro Kimura, Otsu, JP;
Toray Industries, Inc., , JP;
Abstract
A spiral separation membrane element including a plurality of separation membrane pairs wound around the outer peripheral surface of a water collection pipe, wherein the plurality of separation membranes include at least two sets of separation membrane pairs in which two adjacent separation membranes are stacked such that the water supply sides of the separation membranes form opposing surfaces, and the water supply-side surfaces at the ends of separation membranes close to the water collection pipe and parallel to the lengthwise direction of the water collection pipe are sealed by a sealing material.