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

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6861939
SERIAL NO

09890613

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ATTORNEY / AGENT: (SPONSORED)

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 AGSTUTTGART2681

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bischof, Michael Kirchheim-Teck, DE 3 7
Kessler, Burkhard Laichingen, DE 1 3
Moos, Ralf Friedrichshafen, DE 21 97
Mueller, Ralf Aulendorf, DE 75 243
Mueller, Willi Salem, DE 7 30
Plog, Carsten Markdorf, DE 32 296

Cited Art Landscape

Patent Info (Count) # Cites Year
 
NGK SPARK PLUG CO., LTD. (2)
* 5264681 Ceramic heater 43 1992
* 5895591 Ceramic heater and oxygen sensor 37 1997
 
GOLDSTAR ELECTRON CO., LTD. (1)
* 5605612 Gas sensor and manufacturing method of the same 43 1994
 
Thomson-CSF (1)
* 5017340 Temperature compensated resistive type sensor for the measurement of relative concentrations of fluid reactive species 25 1989
 
NISSAN MOTOR CO., LTD. (1)
* 4776943 Device for detecting air-fuel ratio of mixture over wide range from below to above stoichiometric ratio 15 1987
 
MURATA MANUFACTURING CO., LTD. (3)
* 5197804 Resistance temperature sensor 6 1990
* 5656987 Resistance temperature sensor 1 1994
* 5735606 Platinum temperature sensor 12 1996
 
Honeywell Inc. (2)
* 4825693 Slotted diaphragm semiconductor device 20 1986
* 5726624 Temperature sensor with internal rigid substrate 12 1996
 
Leeds & Northrup Company (1)
* 4375056 Thin film resistance thermometer device with a predetermined temperature coefficent of resistance and its method of manufacture 28 1980
 
Drägerwerk Aktiengesellschaft (1)
* 4654624 Gas sensor 26 1986
 
ROBERT BOSCH GMBH (3)
* 4345465 Probe for measuring flow rate and/or temperature of a flowing medium 26 1980
* 4464646 Controlled temperature coefficient thin-film circuit element 30 1981
* 5169512 Planar polarographic probe for determining the .lambda. value of gas mixtures 66 1990
 
CONTINENTAL AUTOMOTIVE GMBH (1)
* 5430428 High-temperature sensor made of metal of the platinum group 24 1993
 
Novasina AG (1)
* 4719441 Sensor for measuring electrical conductivity 17 1986
 
ENSO-GUTZEIT OY (1)
4324659 Lime sludge press unit 14 1980
 
HARRIS CORPORATION (1)
* 6437981 Thermally enhanced microcircuit package and method of forming same 71 2000
 
LG ELECTRONICS INC. (1)
* 5777207 Gas sensor and method for fabricating the same 17 1996
 
NGK INSULATORS, LTD. (3)
* 4861456 Electrochemical device 11 1987
* 4883947 Resistance ceramic heater with mutually connected heat-generating conductors, and electrochemical element or oxygen analyzer using such ceramic heater 25 1989
* 5823680 Temperature sensor 27 1997
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
NITTO DENKO CORPORATION (3)
* 7500780 Flexible wired circuit board for temperature measurement 6 2003
7056014 Flexible wired circuit board for temperature measurement 0 2003
* 2004/0086,026 Flexible wired circuit board for temperature measurement 0 2003
 
ROBERT BOSCH GMBH (2)
8580095 Sensor element having improved thermal properties for determining a gas component 0 2007
* 2009/0308,748 SENSOR ELEMENT HAVING IMPROVED THERMALPROPERTIES FOR DETERMINING A GAS COMPONENT 0 2007
* Cited By Examiner