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:
Jan. 10, 2023
Filed:
Aug. 03, 2018
Tokyo Ohka Kogyo Co., Ltd., Kanagawa, JP;
Nanomembrane Technologies, Inc., Fukuoka, JP;
Takuya Noguchi, Kanagawa, JP;
Takahiro Senzaki, Kanagawa, JP;
Toshiyuki Ogata, Kawasaki, JP;
Toyoki Kunitake, Fukuoka, JP;
Shigenori Fujikawa, Fukuoka, JP;
Miho Ariyoshi, Fukuoka, JP;
TOKYO OHKA KOGYO CO., LTD., Kanagawa, JP;
NANOMEMBRANE TECHNOLOGIES, INC., Fukuoka, JP;
Abstract
The present invention provides: a gas separation method which is capable of desirably separating a slight amount of a component from a mixed gas under mild conditions such that the pressure difference between both sides of a gas separation membrane is 1 atmosphere or less; and a gas separation membrane which is suitable for use in this gas separation method. According to the present invention, in a gas separation method wherein a specific gas (A) in a mixed gas, which contains the specific gas (A) at a concentration of 1,000 ppm by mass or less, is selectively permeated with use of a gas separation membrane, an extremely thin gas separation membrane that has a film thickness of 1 μm or less is used, so that the gas (A) is desirably separated under mild conditions such that the pressure difference between both sides of the gas separation membrane is 1 atmosphere or less.