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:
Aug. 20, 2019
Filed:
Mar. 21, 2017
Ngk Insulators, Ltd., Nagoya-Shi, JP;
Ryujiro Nagasaka, Nagoya, JP;
Shinji Nakamura, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A method of manufacturing a separation membrane structure comprising a step of forming a first to nzeolite membranes on a surface of a porous substrate by 'n' repetitions (wherein n is an integer greater than or equal to 2) of formation of a zeolite membrane by a method of hydrothermal synthesis. The following formula (1) is established in relation to the step of forming the first to the nzeolite membranes. (Formula 1) N/N+0.1≤T/T≤2N/N+2 (Wherein, Ndenotes a permeation rate of a predetermined gas in the substrate after formation of the first zeolite membrane, Ndenotes a permeation rate of a predetermined gas in the substrate before formation of the first zeolite membrane, Tis a time required for formation of the first zeolite membrane, and Tis a total time required for formation of the second to the nzeolite membranes.)