US 12,078,606 B2
Gas sensor
Masakazu Sai, Minoo (JP); Kenichi Yoshioka, Minoo (JP); Kuniyuki Izawa, Minoo (JP); and Toshikazu Sakaguchi, Fukui (JP)
Assigned to FIGARO ENGINEERING INC., Osaka (JP); and UNIVERSITY OF FUKUI, Fukui (JP)
Appl. No. 17/432,973
Filed by Figaro Engineering Inc., Minoo (JP); and University of Fukui, Fukui (JP)
PCT Filed Mar. 17, 2020, PCT No. PCT/JP2020/011690
§ 371(c)(1), (2) Date Aug. 23, 2021,
PCT Pub. No. WO2020/189675, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 2019-050582 (JP), filed on Mar. 19, 2019.
Prior Publication US 2022/0163474 A1, May 26, 2022
Int. Cl. G01N 27/12 (2006.01); B01D 53/22 (2006.01); B01D 69/02 (2006.01); B01D 69/10 (2006.01); B01D 71/44 (2006.01); G01N 33/00 (2006.01)
CPC G01N 27/128 (2013.01) [B01D 53/228 (2013.01); B01D 53/229 (2013.01); B01D 69/02 (2013.01); B01D 69/108 (2022.08); B01D 71/44 (2013.01); G01N 27/126 (2013.01); G01N 33/0047 (2013.01); B01D 2325/20 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A gas detector comprising:
a gas separation membrane comprising substituted polyacetylene where a substituent group is combined to a double-bonded carbon atom in backbone chain of the substituted polyacetylene; and
a sensing element configured to detect gas permeated through the gas separation membrane,
wherein the sensing element is a metal oxide semiconductor type or a contact combustion type, and
wherein the gas separation membrane is configured to block cyclo-siloxanes and to permeate gas to be detected.