Inventor · disambiguated record
Tetsusyo Yamada
Also filed as: YAMADA TETSUSYO
24 granted patents·619 citations·filing 1982–1989
97Inventor score
Top patents by PatentIndex Score
24 records- 0195US4505807AOxygen sensorNGK SPARK PLUG CO·Filed 1982·Granted Mar 19, 1985·94 cites·16 claims
- 0293US4450065AOxygen sensorNGK SPARK PLUG CO·Filed 1982·Granted May 22, 1984·81 cites·9 claims
- 0387US4498968AOxygen sensorNGK SPARK PLUG CO·Filed 1983·Granted Feb 12, 1985·54 cites·12 claims
- 0486US4505806AOxygen sensorNGK SPARK PLUG CO·Filed 1982·Granted Mar 19, 1985·43 cites·13 claims
- 0581US4578172AAir/fuel ratio detectorNGK SPARK PLUG CO·Filed 1984·Granted Mar 25, 1986·40 cites·6 claims
- 0680US4722779AAir/fuel ratio sensorNGK SPARK PLUG CO·Filed 1987·Granted Feb 2, 1988·44 cites·3 claims
- 0776US5110442AReinforced electrolyte function elementsNGK SPARK PLUG CO·Filed 1989·Granted May 5, 1992·27 cites·14 claims
- 0869US4624770AAir-fuel ratio sensorNGK SPARK PLUG CO·Filed 1985·Granted Nov 25, 1986·28 cites·10 claims
- 0968US4753203AAir/fuel ratio sensor apparatus for use with internal combustion engineNGK SPARK PLUG CO·Filed 1986·Granted Jun 28, 1988·27 cites·1 claims
- 1061US4629549AOxygen sensorNGK SPARK PLUG CO·Filed 1985·Granted Dec 16, 1986·21 cites·10 claims
- 1161US4594139AAir/fuel ratio detectorMITSUBISHI ELECTRIC CORP·Filed 1984·Granted Jun 10, 1986·18 cites·15 claims
- 1261US4578171AAir/fuel ratio detectorNGK SPARK PLUG CO·Filed 1984·Granted Mar 25, 1986·19 cites·8 claims
- 1357US4806739APlate-like ceramic heaterNGK SPARK PLUG CO·Filed 1987·Granted Feb 21, 1989·15 cites·12 claims
- 1456US5064693AMethod of adjusting a gas sensorNGK SPARK PLUG CO·Filed 1989·Granted Nov 12, 1991·17 cites·22 claims
- 1556US4615787AAir/fuel ratio detectorNGK SPARK PLUG CO·Filed 1984·Granted Oct 7, 1986·16 cites·8 claims
- 1655US4839018AAir/fuel ratio detectorNGK SPARK PLUG CO·Filed 1988·Granted Jun 13, 1989·18 cites·14 claims
- 1754US4591421AAir/fuel ratio detectorNGK SPARK PLUG CO·Filed 1984·Granted May 27, 1986·14 cites·15 claims
- 1850US4836906AAir-fuel ratio sensorNGK SPARK PLUG CO·Filed 1987·Granted Jun 6, 1989·13 cites·15 claims
- 1945US4785150APlate-like alumina heaterNGK SPARK PLUG CO·Filed 1985·Granted Nov 15, 1988·8 cites·8 claims
- 2041US4722778AGas sensor with gas diffusion chamber between two platy solid electrolyte cellsNGK SPARK PLUG CO·Filed 1987·Granted Feb 2, 1988·8 cites·11 claims
- 2139US4840854AReinforced plate-like sintered bodiesNGK SPARK PLUG CO·Filed 1987·Granted Jun 20, 1989·6 cites·6 claims
- 2232US4935119AAir/fuel ratio sensorNGK SPARK PLUG CO·Filed 1986·Granted Jun 19, 1990·3 cites·5 claims
- 2331US5047137ASolid electrolyte air/fuel ratio sensor with voltage controlNGK SPARK PLUG CO·Filed 1986·Granted Sep 10, 1991·3 cites·7 claims
- 2429US4792387AAir-fuel ratio detecting deviceNGK SPARK PLUG CO·Filed 1985·Granted Dec 20, 1988·2 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →