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:
Apr. 16, 2019
Filed:
Sep. 18, 2015
Ngk Insulators, Ltd., Nagoya, JP;
Kenji Yajima, Nagoya, JP;
Takeshi Hagio, Nagoya, JP;
Makoto Miyahara, Nagoya, JP;
Tetsuya Uchikawa, Nagoya, JP;
Naoko Inukai, Nagoya, JP;
Makiko Ichikawa, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
Provided is a zeolite membrane manufactured by: subjecting a porous body to heat treatment at 400° C. or more in the presence of oxygen as pretreatment, before adhering zeolite seed crystals to a surface of the porous body; storing the porous body under an environment of humidity of 30% or more for 12 hours or more after the heat treatment; and subsequently adhering the zeolite seed crystals to the porous body. The zeolite membrane having oxygen eight-membered rings, which is manufactured by subjecting the porous body to the heat treatment, provides a value that is obtained by dividing a permeance of CFby a permeance of COto be 0.015 or less, and has fewer defects.