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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.:

US 10906011 B1

PDFFull Text
Date of Patent:
Feb. 02, 2021

Filed:

Feb. 28, 2017

Layered semipermeable membrane

Applicant:

Toray Industries, Inc., Tokyo, JP;

Inventors:

Takahiro Tokuyama, Shiga, JP;

Takafumi Ogawa, Shiga, JP;

Hiroki Tomioka, Shiga, JP;

Assignee:

TORAY INDUSTRIES, INC., Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Taiwo Oladapo

Int. Cl.
CPC ...
B01D 71/40 (2006.01); B01D 69/12 (2006.01); B01D 71/56 (2006.01); B01D 71/82 (2006.01); B32B 27/00 (2006.01); B01D 67/00 (2006.01); B01D 71/62 (2006.01); B01D 69/10 (2006.01); B32B 27/34 (2006.01);
U.S. Cl.
CPC ...
B01D 71/40 (2013.01); B01D 67/0006 (2013.01); B01D 67/0079 (2013.01); B01D 67/0088 (2013.01); B01D 69/10 (2013.01); B01D 69/12 (2013.01); B01D 69/125 (2013.01); B01D 71/56 (2013.01); B01D 71/62 (2013.01); B01D 71/82 (2013.01); B32B 27/00 (2013.01); B01D 2323/30 (2013.01); B01D 2323/34 (2013.01); B01D 2325/028 (2013.01); B01D 2325/14 (2013.01); B01D 2325/26 (2013.01); B32B 27/34 (2013.01);
Abstract

The present invention relates to a layered semipermeable membrane satisfying the conditions below. (A) The maximum peak intensity between 3700 and 2900 cmis 0.08 or greater in the difference spectrum between an IR spectrum measured at 25° C. and 97% relative humidity and an IR spectrum measured at 25° C. and 3% relative humidity. (B) The peak top wavenumber between 3700 and 2900 cmof the aforementioned difference spectrum is 3400 cmto 3550 cm. (C) The N1s peak has a maximum value at 401 eV or greater in X-ray photoelectron spectroscopy in which X-rays are radiated to a coat layer.

Find Patent Forward Citations

Tokuyama, Takahiro. (2021). Layered semipermeable membrane (U.S. Patent No. 10906011). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10906011

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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