Global Patent Index - EP 1086370 A1

EP 1086370 A1 2001-03-28 - DETECTOR FOR ONE OR SEVERAL POLLUTING GASES AND USE THEREOF

Title (en)

DETECTOR FOR ONE OR SEVERAL POLLUTING GASES AND USE THEREOF

Title (de)

DETEKTOR VON UMWELTVERSCHMUTZENDEN GASEN UND SEINE VERWENDUNG

Title (fr)

DETECTEUR D'UN OU DE PLUSIEURS GAZ POLLUANTS ET SON UTILISATION

Publication

EP 1086370 A1 (FR)

Application

EP 99923729 A

Priority

  • FR 9901395 W
  • FR 9807383 A

Abstract (en)

[origin: FR2779826A1] The invention concerns a detector in the form of a field-effect transistor (13) arranged in a chamber (14). The transistor (13) electroattractive part is formed by a macromolecular material layer (4). The latter is exposed to a mixture containing at least one polluting gas, such as O3 and NO2, which causes it to be doped. A measuring device (10) comprises means for measuring the intensity of the current (IDS) which circulates between the transistor drain electrode (5) and source electrode (6) at least at one given time after the detector has been initialised, said at least polluting gas presence causing the layer (4) material to be doped depending on the concentration in polluting gas, the current (IDS)intensity and the intensity gradient being related to the concentration in polluting gas.

IPC 1-7 (main, further and additional classification)

G01N 27/414; G01N 33/00

IPC 8 full level (invention and additional information)

G01N 27/30 (2006.01); G01N 27/414 (2006.01); G01N 27/416 (2006.01); G01N 33/00 (2006.01)

CPC (invention and additional information)

G01N 27/4141 (2013.01); G01N 33/0037 (2013.01); G01N 33/0039 (2013.01)

Citation (search report)

See references of WO 9966319A1

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB IT LI LU NL SE

EPO simple patent family

FR 2779826 A1 19991217; FR 2779826 B1 20020531; AU 4049599 A 20000105; CA 2334849 A1 19991223; EP 1086370 A1 20010328; JP 2002518673 A 20020625; WO 9966319 A1 19991223

INPADOC legal status


2006-09-27 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20060103

2006-04-19 [32PN] PUBLIC NOTIFICATION UNDER RULE 80 EPC

- Free text: CONSTATATION DE LA PERTE D'UN DROIT

2001-03-28 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001122

2001-03-28 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH DE DK ES FR GB IT LI LU NL SE