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:
Mar. 16, 2004
Filed:
Nov. 27, 2002
Nissan Chemical Industries, Tokyo, JP;
Abstract
The present invention relates to a method for controlling a permeability of a gas to be separated through an organic separation membrane in a separation process of gasses by an organic separation membrane, wherein the method comprises irradiating the organic separation membrane with a microwave to cause vibration/rotation of a molecule or a domain thereof constituting the organic separation membrane and alter the molecular structure and/or polarity of the organic separation membrane, and thus altering a permeability of the gas to be separated; and also a method for producing an organic separation membrane, comprising irradiating with a microwave in a process of producing the organic separation membrane to alter the permeability thereof.