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1. (WO2001036941) OPTICAL HYDROGEN DETECTOR
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/036941 International Application No.: PCT/US2000/031445
Publication Date: 25.05.2001 International Filing Date: 15.11.2000
Chapter 2 Demand Filed: 18.06.2001
IPC:
G01N 21/59 (2006.01) ,G01N 33/00 (2006.01)
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
17
Systems in which incident light is modified in accordance with the properties of the material investigated
59
Transmissivity
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33
Investigating or analysing materials by specific methods not covered by groups G01N1/-G01N31/131
Applicants:
ADVANCED TECHNOLOGY MATERIALS, INC. [US/US]; 7 Commerce Drive Danbury, CT 06810, US
Inventors:
DIMEO, Frank, Jr.; US
KING, Mackenzie, E.; US
Agent:
ZITZMANN, Oliver, A., M.; Advanced Technology Materials, Inc. 7 Commerce Drive Danbury, CT 06810, US
Priority Data:
09/442,56818.11.1999US
Title (EN) OPTICAL HYDROGEN DETECTOR
(FR) DETECTEUR OPTIQUE D'HYDROGENE
Abstract:
(EN) A hydrogen gas detector for detection of hydrogen gas (H) in a gaseous environment. The detector comprises a light/heat source (16), an optical detector (18), and an optical barrier (12, 14) between the source (16) and detector (18). The optical barrier (12, 14) responds to the presence of hydrogen (H) by responsively changing from a first optical state to a different second optical state, whereby transmission of light from the light/heat source (16) through the optical barrier (12, 14) is altered by the presence of hydrogen (H) and the altered transmission is sensed by the optical detector (18) to provide an indication of the presence of hydrogen (H) gas in the gaseous environment.
(FR) L'invention concerne un détecteur de gaz hydrogène destiné à la détection de gaz hydrogène (H) dans un environnement gazeux. Ce détecteur comprend une source de lumière/chaleur (16), un détecteur optique (18) et une barrière optique (12, 14) située entre cette source (16) et ce détecteur (18). Ladite barrière optique (12, 14) répond à la présence d'hydrogène (H) en passant d'un premier état optique à un second état optique différent, la transmission de lumière à partir de la source de lumière/chaleur (16) à travers la barrière optique (12, 14) étant modifiée par la présence d'hydrogène (H), le détecteur optique (18) détectant cette modification de façon à fournir une indication révélant la présence d'hydrogène (H) dans cet environnement gazeux.
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Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, HU, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)