Inventor · disambiguated record
Naoto Miwa
Also filed as: MIWA NAOTO · NIWA HITOSHI
36 granted patents·2 pending applications·1,122 citations·filing 1975–2022
98Inventor score
Top patents by PatentIndex Score
38 records- 0198US4519820AFitter apparatus for purifying exhaust gasesNIPPON DENSO CO·Filed 1983·Granted May 28, 1985·179 cites·15 claims
- 0297US4448833APorous ceramic body and a method of manufacturing the sameNIPPON DENSO CO·Filed 1982·Granted May 15, 1984·113 cites·9 claims
- 0395US4632683AExhaust gas purifying filter and production of the sameNIPPON DENSO CO·Filed 1985·Granted Dec 30, 1986·97 cites·10 claims
- 0493US4435512AProcess for producing cordierite ceramic productsNIPPON DENSO CO·Filed 1981·Granted Mar 6, 1984·68 cites·3 claims
- 0588US4685437AIntake air heater for internal combustion engine with perforated plate heater element partially traversing air passageTOYOTA MOTOR CO LTD·Filed 1985·Granted Aug 11, 1987·46 cites·3 claims
- 0684US4219359ASintered body of zirconia for oxygen concentration sensorNIPPON DENSO CO·Filed 1979·Granted Aug 26, 1980·37 cites·6 claims
- 0782US4671058AHeating deviceNIPPON DENSO CO·Filed 1984·Granted Jun 9, 1987·39 cites·24 claims
- 0880US4831432APositive ceramic semiconductor deviceNIPPON DENSO CO·Filed 1987·Granted May 16, 1989·25 cites·21 claims
- 0979US3958209AHigh temperature thermistorNIPPON DENSO CO·Filed 1975·Granted May 18, 1976·22 cites·7 claims
- 1074US5766434AOxygen concentration detecting device and method for fabricating the sameDENSO CORP·Filed 1997·Granted Jun 16, 1998·43 cites·20 claims
- 1172US5787866AAir-fuel ratio sensorDENSO CORP·Filed 1997·Granted Aug 4, 1998·38 cites·15 claims
- 1271US6332965B1Composite gas sensorDENSO CORP·Filed 1998·Granted Dec 25, 2001·32 cites·6 claims
- 1371US5948225AOxygen sensor elementDENSO CORP·Filed 1997·Granted Sep 7, 1999·31 cites·1 claims
- 1470US5935399AAir-fuel ratio sensorDENSO CORP·Filed 1997·Granted Aug 10, 1999·35 cites·30 claims
- 1570US4401967AGas sensorNIPPON DENSO CO·Filed 1981·Granted Aug 30, 1983·24 cites·17 claims
- 1668US5716507AOxygen sensor elementNIPPON DENSO CO·Filed 1995·Granted Feb 10, 1998·35 cites·4 claims
- 1768US4834052AInternal combustion engine having air/fuel mixture with anti-reducing semiconducting porcelain having a positive temperature coefficient of resistance and method for using such porcelain for heating air/fuel mixtureNIPPON DENSO CO·Filed 1987·Granted May 30, 1989·15 cites·15 claims
- 1867US5900129AOxygen concentration sensorNIPPON DENSO CO·Filed 1996·Granted May 4, 1999·30 cites·25 claims
- 1966US5969229ALead wire for sensorNIPPON DENSO CO·Filed 1996·Granted Oct 19, 1999·25 cites·6 claims
- 2065US6055972AAir fuel ratio control apparatus having air-fuel ratio control point switching functionDENSO CORP·Filed 1997·Granted May 2, 2000·28 cites·19 claims
- 2163US4716279ASelf-temperature controlling type heating deviceNIPPON DENSO CO·Filed 1985·Granted Dec 29, 1987·19 cites·6 claims
- 2259US5800689AOxygen concentration detectorNIPPON DENSO CO·Filed 1996·Granted Sep 1, 1998·22 cites·16 claims
- 2359US4315988AThermophilic collagenases, thermophilic bacteria capable of producing thermophilic collagenases, and process for producing said collagenasesMITSUBISHI PETROCHEMICAL CO·Filed 1979·Granted Feb 16, 1982·14 cites·14 claims
- 2457US4352881AMethod of measuring creatine kinase activityMITSUBISHI PETROCHEMICAL CO·Filed 1981·Granted Oct 5, 1982·18 cites·4 claims
- 2553US6174489B1Method for manufacturing a gas sensor unitDENSO CORP·Filed 1998·Granted Jan 16, 2001·16 cites·12 claims
- 2653US2024278175A1Method for recycling ammonia from ammonia-containing gas or ammonia-containing liquid, ammonia recycling device, and ammonia gas storage deviceDAISEKI CO LTD·Filed 2022·Application pending·0 cites
- 2750US7594536B2EGR coolerHINO MOTORS LTD·Filed 2003·Granted Sep 29, 2009·5 cites·2 claims
- 2847US4438199AMeasuring compositionMITSUBISHI PETROCHEMICAL CO·Filed 1981·Granted Mar 20, 1984·9 cites·3 claims
- 2947US2002038761A1Composite gas sensorFiled 2001·Application pending·0 cites
- 3043US6254926B1Method of producing oxygen sensor elementDENSO CORP·Filed 1999·Granted Jul 3, 2001·8 cites·5 claims
- 3142US5609825AOxygen sensorNIPPON DENSO CO·Filed 1995·Granted Mar 11, 1997·10 cites·6 claims
- 3242US4313810AOxygen concentration sensing apparatusNIPPON DENSO CO·Filed 1979·Granted Feb 2, 1982·6 cites·5 claims
- 3342US4220517AOxygen concentration sensing apparatusNIPPON DENSO CO·Filed 1979·Granted Sep 2, 1980·7 cites·9 claims
- 3441US5729189APositive TCR thermistor device having surface roughness and filling oil for high heat transfer characteristicsNIPPON DENSO CO·Filed 1996·Granted Mar 17, 1998·9 cites·12 claims
- 3540US6110348ANOx sensor and manufacturing method of the sameDENSO CORP·Filed 1998·Granted Aug 29, 2000·7 cites·5 claims
- 3636US6951601B1Oxygen concentration detectorDENSO CORP·Filed 1997·Granted Oct 4, 2005·4 cites·20 claims
- 3735US5766672AMethod of manufacturing an oxygen concentration detector elementNIPPON DENSO CO·Filed 1996·Granted Jun 16, 1998·4 cites·6 claims
- 3832US5707503AOxygen sensor elementNIPPON DENSO CO·Filed 1995·Granted Jan 13, 1998·2 cites·18 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →