Global patent index - EP 0872911 A3

EP 0872911 A3 2000-05-03 - Absorbing layer for a high-frequency heating catalyst

Title (en)

Absorbing layer for a high-frequency heating catalyst

Title (de)

Absorberschicht für einen mit Hochfrequenz beheizbaren Katalysator

Title (fr)

Couche d'absorption pour un catalyseur à chauffage à haute fréquence

Publication

EP 0872911 A3 (EN)

Application

EP 98106509 A

Priority

  • JP 9759597 A
  • JP 10053097 A

Abstract (en)

[origin: EP0872911A2] The high-frequency heating catalyst of the present invention comprises a high-frequency absorbing layer formed on the surface of a substrate made from a material which rarely absorbs a high-frequency wave and made from a high-frequency absorbing material and a catalyst such as Pd, Pd/Rh or Pt/Rh, carried by the high-frequency absorbing layer, for making clean harmful substances contained in exhaust gas. Since the high-frequency absorbing layer is made from a mixture of an electroconductive metal oxide and an insulating material having an impedance adjusted to the characteristic impedance of a medium through which a high-frequency wave is transmitted such that reflection power ratio becomes 10 dB or more, the high-frequency wave can be absorbed and converted into heat energy effectively. <IMAGE>

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

H01Q 17/00; F01N 3/02; F01N 3/20; H05B 6/80

IPC 8 full level (invention and additional information)

H05B 6/02 (2006.01)

CPC (invention and additional information)

H05B 6/108 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 0872911 A2 19981021; EP 0872911 A3 20000503

INPADOC legal status

2001-08-01 [18D] DEEMED TO BE WITHDRAWN

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- Effective date: 20001103

2001-01-10 [AKX] PAYMENT OF DESIGNATION FEES

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2000-05-03 [AK] DESIGNATED CONTRACTING STATES:

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2000-05-03 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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1998-10-21 [AK] DESIGNATED CONTRACTING STATES:

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1998-10-21 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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