Global Patent Index - EP 1042666 A1

EP 1042666 A1 2000-10-11 - METAL OXIDE SENSOR FOR DETECTING NITROGEN OXIDES

Title (en)

METAL OXIDE SENSOR FOR DETECTING NITROGEN OXIDES

Title (de)

METALLOXIDSENSOR ZUR FESELLUNG VON STICKOXIDEN

Title (fr)

DETECTEUR A OXYDE METALLIQUE PERMETTANT LA DETECTION D'OXYDES D'AZOTE

Publication

EP 1042666 A1 (EN)

Application

EP 98959588 A

Priority

  • US 9825118 W
  • US 7027297 P

Abstract (en)

[origin: WO9934199A1] A sensor system is disclosed for detecting nitrogen oxides in a flowing gas stream, having a sensor oxidation catalyst capable of both oxidizing CO and NO in the gas sample to CO2 and NO2, respectively, which is incorporated into the system so as to oxidise the CO and NO in the flowing gas stream prior to the gas stream contacting a metal oxide semiconducting sensor; an n-type semiconducting metal oxide sensor, whose electrical resistance varies in relation to the concentration of nitrogen oxides in the flowing gas stream.

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

G01N 27/12

IPC 8 full level (invention and additional information)

G01N 27/12 (2006.01); G01N 33/00 (2006.01)

CPC (invention and additional information)

G01N 27/12 (2013.01); G01N 33/0037 (2013.01)

Citation (search report)

See references of WO 9934199A1

Designated contracting state (EPC)

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

EPO simple patent family

WO 9934199 A1 19990708; CN 1285914 A 20010228; EP 1042666 A1 20001011

INPADOC legal status


2005-02-16 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20040102

2000-10-11 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000727

2000-10-11 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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