US Patent No: 6,861,939

Number of patents in Portfolio can not be more than 2000

Arrangement of a heating layer for a high-temperature gas sensor

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Importance

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Abstract

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The operating temperature of a gas sensor capable of sensing a gas or a gas composition at a high temperature, for example 1000.degree. C. is maintained constant over the entire volume of a gas sensor layer or function layer (4) secured to a sensor carrier section of the gas sensor by supplying heat to the gas sensor layer (4) in such a way that varying heat dissipations in the sensor carrier section are compensated. For this purpose, an electrical heater for heating the gas sensor layer (4) has individual heater sections with different heating resistance values which depend on a spacing between any individual heater section and the tip of the sensor carrier section.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
DAIMLER AGSTUTTGART3138

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bischof, Michael Kirchheim-Teck, DE 3 3
Kessler, Burkhard Laichingen, DE 1 3
Moos, Ralf Friedrichshafen, DE 23 69
Mueller, Ralf - 96 129
Mueller, Willi Salem, DE 9 16
Plog, Carsten Markdorf, DE 43 238

Cited Art Landscape

Patent Info (Count) # Cites Year
 
MURATA MANUFACTURING CO., LTD. (3)
5,197,804 Resistance temperature sensor 6 1990
5,656,987 Resistance temperature sensor 1 1994
5,735,606 Platinum temperature sensor 12 1996
 
NGK INSULATORS, LTD. (3)
4,861,456 Electrochemical device 11 1987
4,883,947 Resistance ceramic heater with mutually connected heat-generating conductors, and electrochemical element or oxygen analyzer using such ceramic heater 23 1989
5,823,680 Temperature sensor 25 1997
 
ROBERT BOSCH GMBH (3)
4,345,465 Probe for measuring flow rate and/or temperature of a flowing medium 25 1980
4,464,646 Controlled temperature coefficient thin-film circuit element 29 1981
5,169,512 Planar polarographic probe for determining the .lambda. value of gas mixtures 48 1990
 
Honeywell Inc. (2)
4,825,693 Slotted diaphragm semiconductor device 20 1986
5,726,624 Temperature sensor with internal rigid substrate 10 1996
 
NGK SPARK PLUG CO., LTD. (2)
5,264,681 Ceramic heater 43 1992
5,895,591 Ceramic heater and oxygen sensor 31 1997
 
CONTINENTAL AUTOMOTIVE GMBH (1)
5,430,428 High-temperature sensor made of metal of the platinum group 23 1993
 
Dragerwerk Aktiengesellschaft (1)
4,654,624 Gas sensor 26 1986
 
Enso-Gutzeit Oy (1)
4,324,659 Lime sludge press unit 11 1980
 
GENERAL ELECTRIC COMPANY (1)
4,286,377 Method of manufacture for a resistance heater and temperature sensor 19 1979
 
Goldstar Electron Co., Ltd. (1)
5,605,612 Gas sensor and manufacturing method of the same 41 1994
 
HARRIS CORPORATION (1)
6,437,981 Thermally enhanced microcircuit package and method of forming same 64 2000
 
Leeds & Northrup Company (1)
4,375,056 Thin film resistance thermometer device with a predetermined temperature coefficent of resistance and its method of manufacture 28 1980
 
LG ELECTRONICS INC. (1)
5,777,207 Gas sensor and method for fabricating the same 17 1996
 
NISSAN MOTOR CO., LTD. (1)
4,776,943 Device for detecting air-fuel ratio of mixture over wide range from below to above stoichiometric ratio 15 1987
 
Novasina AG (1)
4,719,441 Sensor for measuring electrical conductivity 15 1986
 
Thomson-CSF (1)
5,017,340 Temperature compensated resistive type sensor for the measurement of relative concentrations of fluid reactive species 25 1989

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
NITTO DENKO CORPORATION (2)
7,500,780 Flexible wired circuit board for temperature measurement 4 2003
7,056,014 Flexible wired circuit board for temperature measurement 0 2003
 
ROBERT BOSCH GMBH (1)
8,580,095 Sensor element having improved thermal properties for determining a gas component 0 2007

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