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
Stats
-
Mar 1, 2005
Issued date -
Jul 31, 2001
filing date -
09/890,613
serial no -
Expired
status
Importance
Loading Importance Indicators...
Abstract
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.
Loading the Abstract Image...
First Claim
Related Publications
Loading Related Publications...
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
|
|
|||
| 5,197,804 Resistance temperature sensor | 6 | 1990 | |
| 5,656,987 Resistance temperature sensor | 1 | 1994 | |
| 5,735,606 Platinum temperature sensor | 12 | 1996 | |
|
|
|||
| 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 | 22 | 1989 | |
| 5,823,680 Temperature sensor | 25 | 1997 | |
|
|
|||
| 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 | 28 | 1981 | |
| 5,169,512 Planar polarographic probe for determining the .lambda. value of gas mixtures | 32 | 1990 | |
|
|
|||
| 4,825,693 Slotted diaphragm semiconductor device | 20 | 1986 | |
| 5,726,624 Temperature sensor with internal rigid substrate | 9 | 1996 | |
|
|
|||
| 5,264,681 Ceramic heater | 38 | 1992 | |
| 5,895,591 Ceramic heater and oxygen sensor | 28 | 1997 | |
|
|
|||
| 5,430,428 High-temperature sensor made of metal of the platinum group | 22 | 1993 | |
|
|
|||
| 4,654,624 Gas sensor | 25 | 1986 | |
|
|
|||
| 4,324,659 Lime sludge press unit | 10 | 1980 | |
|
|
|||
| 4,286,377 Method of manufacture for a resistance heater and temperature sensor | 19 | 1979 | |
|
|
|||
| 5,605,612 Gas sensor and manufacturing method of the same | 38 | 1994 | |
|
|
|||
| 6,437,981 Thermally enhanced microcircuit package and method of forming same | 61 | 2000 | |
|
|
|||
| 4,375,056 Thin film resistance thermometer device with a predetermined temperature coefficent of resistance and its method of manufacture | 27 | 1980 | |
|
|
|||
| 5,777,207 Gas sensor and method for fabricating the same | 16 | 1996 | |
|
|
|||
| 4,776,943 Device for detecting air-fuel ratio of mixture over wide range from below to above stoichiometric ratio | 15 | 1987 | |
|
|
|||
| 4,719,441 Sensor for measuring electrical conductivity | 14 | 1986 | |
|
|
|||
| 5,017,340 Temperature compensated resistive type sensor for the measurement of relative concentrations of fluid reactive species | 25 | 1989 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 1, 2016 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |