Tokyo Ohka Kogyo Co., Ltd.

Nanomembrane Technologies, Inc.

Miho Ariyoshi

Takahiro Senzaki

Toshiyuki Ogata

Toyoki Kunitake

Shigenori Fujikawa

Takuya Noguchi

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 &#x3bc;m 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.

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Fukuoka, Japan

Miho Ariyoshi