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:
Jul. 14, 2026
Filed:
Jun. 21, 2023
Ngk Insulators, Ltd., Nagoya-City, JP;
Kenichi Noda, Nagoya-City, JP;
NGK INSULATORS, LTD., Nagoya-City, JP;
Abstract
A mixed gas separation method includes supplying a mixed gas containing at least N, H, and COand having a COconcentration of 30% or less by volume to a first separation membrane that selectively allows passage of H, supplying the first non-permeated gas to a second separation membrane that selectively allows passage of CO, and supplying the second non-permeated gas to a COcollector that separates and collects COby a separation method other than membrane separation to collect COcontained in the second non-permeated gas. The first non-permeated gas has a COconcentration that is 5% or more by volume higher than or equal to the COconcentration in the mixed gas. The second non-permeated gas has an Nconcentration of 50% or more by volume and an Hconcentration of 30% or less by volume.