P

Inventor

YAMADA TETSUSYO

JP24 patents
⚠️ This page may combine multiple inventors who share the name “YAMADA TETSUSYO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NGK SPARK PLUG CO

23 patents
US4505807AMar 19, 1985

Oxygen sensor

NGK SPARK PLUG CO94 citations96
US4450065AMay 22, 1984

Oxygen sensor

NGK SPARK PLUG CO81 citations96
US4753203AJun 28, 1988

Air/fuel ratio sensor apparatus for use with internal combustion engine

NGK SPARK PLUG CO27 citations92
US4722779AFeb 2, 1988

Air/fuel ratio sensor

NGK SPARK PLUG CO44 citations92
US4624770ANov 25, 1986

Air-fuel ratio sensor

NGK SPARK PLUG CO28 citations92
US4505806AMar 19, 1985

Oxygen sensor

NGK SPARK PLUG CO43 citations92
US4498968AFeb 12, 1985

Oxygen sensor

NGK SPARK PLUG CO54 citations92
US5110442AMay 5, 1992

Reinforced electrolyte function elements

NGK SPARK PLUG CO27 citations91
US4578172AMar 25, 1986

Air/fuel ratio detector

NGK SPARK PLUG CO40 citations91
US4629549ADec 16, 1986

Oxygen sensor

NGK SPARK PLUG CO21 citations82
US4785150ANov 15, 1988

Plate-like alumina heater

NGK SPARK PLUG CO8 citations74
US5064693ANov 12, 1991

Method of adjusting a gas sensor

NGK SPARK PLUG CO17 citations73
US4836906AJun 6, 1989

Air-fuel ratio sensor

NGK SPARK PLUG CO13 citations73
US4722778AFeb 2, 1988

Gas sensor with gas diffusion chamber between two platy solid electrolyte cells

NGK SPARK PLUG CO8 citations73
US4806739AFeb 21, 1989

Plate-like ceramic heater

NGK SPARK PLUG CO15 citations72
US4615787AOct 7, 1986

Air/fuel ratio detector

NGK SPARK PLUG CO16 citations72
US4591421AMay 27, 1986

Air/fuel ratio detector

NGK SPARK PLUG CO14 citations72
US4578171AMar 25, 1986

Air/fuel ratio detector

NGK SPARK PLUG CO19 citations72
US4839018AJun 13, 1989

Air/fuel ratio detector

NGK SPARK PLUG CO18 citations71
US4935119AJun 19, 1990

Air/fuel ratio sensor

NGK SPARK PLUG CO3 citations63
US4840854AJun 20, 1989

Reinforced plate-like sintered bodies

NGK SPARK PLUG CO6 citations63
US5047137ASep 10, 1991

Solid electrolyte air/fuel ratio sensor with voltage control

NGK SPARK PLUG CO3 citations62
US4792387ADec 20, 1988

Air-fuel ratio detecting device

NGK SPARK PLUG CO2 citations61

MITSUBISHI ELECTRIC CORP

1 patent