Inventor
OBAYASHI HIDEKI
52 patents
⚠️ This page may combine multiple inventors who share the name “OBAYASHI HIDEKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON SOKEN
44 patentsUS4489695ADec 25, 1984
Method and system for output control of internal combustion engine
NIPPON SOKEN183 citations99
US4434767AMar 6, 1984
Output control system for multicylinder internal combustion engine
NIPPON SOKEN177 citations99
US3975951AAug 24, 1976
Intake-air amount detecting system for an internal combustion engine
NIPPON SOKEN73 citations96
US4691286ASep 1, 1987
Method and apparatus for detecting combustion variations in internal combustion engine
NIPPON SOKEN32 citations93
US4562818AJan 7, 1986
Method and apparatus for controlling the air-fuel ratio in an internal combustion engine
NIPPON SOKEN44 citations93
US4399697AAug 23, 1983
Gas flow measuring apparatus
NIPPON SOKEN34 citations93
US4304129ADec 8, 1981
Gas flow measuring apparatus
NIPPON SOKEN44 citations93
US4089214AMay 16, 1978
Intake air amount detecting system
NIPPON SOKEN46 citations93
US4074566AFeb 21, 1978
Intake air amount detecting device for an internal combustion engine
NIPPON SOKEN35 citations93
US4739483AApr 19, 1988
Automatic transmission control system for an automobile
NIPPON SOKEN31 citations92
US4592241AJun 3, 1986
Torque detector
NIPPON SOKEN53 citations92
US4513628AApr 30, 1985
Torque detector
NIPPON SOKEN31 citations92
US4513626AApr 30, 1985
Torque detector
NIPPON SOKEN23 citations82
US4513721AApr 30, 1985
Air-fuel ratio control device for internal combustion engines
NIPPON SOKEN26 citations82
US4503713AMar 12, 1985
Dual sensitivity torque detector
NIPPON SOKEN26 citations82
US4478185AOct 23, 1984
Air-fuel ratio and ignition timing regulation by detecting engine running condition
NIPPON SOKEN25 citations82
US4357830ANov 9, 1982
Gas flow measuring apparatus
NIPPON SOKEN21 citations82
US4149503AApr 17, 1979
Exhaust gas recirculation system for an internal combustion engine
NIPPON SOKEN27 citations82
US4100734AJul 18, 1978
Exhaust gas purification system for an internal combustion engine
NIPPON SOKEN20 citations82
US4550618ANov 5, 1985
Torque detector
NIPPON SOKEN9 citations74
US4532798AAug 6, 1985
Measurement of variations in internal combustion engine output
NIPPON SOKEN11 citations74
US4517648AMay 14, 1985
Torque variation detecting method and apparatus for internal combustion engine
NIPPON SOKEN11 citations74
US4513627AApr 30, 1985
Torque detector
NIPPON SOKEN10 citations74
US4471655ASep 18, 1984
Gas flow rate measuring apparatus
NIPPON SOKEN16 citations74
US4425792AJan 17, 1984
Apparatus for measuring a fluid flow rate
NIPPON SOKEN14 citations74
US4414847ANov 15, 1983
Gas flow measuring apparatus
NIPPON SOKEN10 citations74
US4409828AOct 18, 1983
Gas flow measuring device
NIPPON SOKEN11 citations74
US4393702AJul 19, 1983
Gas flow measuring device
NIPPON SOKEN10 citations74
US4391132AJul 5, 1983
Gas flow measuring apparatus
NIPPON SOKEN7 citations74
US4384484AMay 24, 1983
Gas flow measuring device
NIPPON SOKEN10 citations74
US4332165AJun 1, 1982
Gas flow measuring device
NIPPON SOKEN14 citations74
US4276773AJul 7, 1981
Gas flow measuring apparatus
NIPPON SOKEN16 citations74
US4196706AApr 8, 1980
Exhaust gas recirculation system for internal combustion engine
NIPPON SOKEN7 citations74
US4181110AJan 1, 1980
Exhaust gas recirculation system for internal combustion engine
NIPPON SOKEN7 citations74
US4148286AApr 10, 1979
Exhaust gas recirculation system for an internal combustion engine
NIPPON SOKEN11 citations74
US4146986AApr 3, 1979
Device for supplying secondary air for purifying exhaust gases discharged from internal combustion engine
NIPPON SOKEN9 citations74
US4109462AAug 29, 1978
Device for purifying exhaust gas discharged from internal combustion engine
NIPPON SOKEN13 citations74
US4067233AJan 10, 1978
Intake air amount measuring system for an internal combustion engine
NIPPON SOKEN12 citations74
US4624232ANov 25, 1986
Apparatus for controlling air-fuel ratio in internal combustion engine
NIPPON SOKEN18 citations70
US4437345AMar 20, 1984
Gas flow measuring device
NIPPON SOKEN5 citations63
US4417471ANov 29, 1983
Gas flow measuring device
NIPPON SOKEN3 citations63
US4275590AJun 30, 1981
Gas flow measuring apparatus
NIPPON SOKEN4 citations63
US4230079AOct 28, 1980
Exhaust gas recirculation system for internal combustion engines
NIPPON SOKEN6 citations63
US4222237ASep 16, 1980
Exhaust gas purifying apparatus for internal combustion engine
NIPPON SOKEN4 citations63
DENSO CORP
3 patentsUS7024304B2Apr 4, 2006
Diagnosis system for variable valve controller
DENSO CORP21 citations92
US7143753B2Dec 5, 2006
Air amount calculator for internal combustion engine
DENSO CORP13 citations84
US7047740B2May 23, 2006
Boost pressure estimation apparatus for internal combustion engine with supercharger
DENSO CORP17 citations84
NIPPON DENSO CO
3 patentsUS4796584AJan 10, 1989
Intake control system for internal combustion engine and intake control valve used therein
NIPPON DENSO CO23 citations82
US4858568AAug 22, 1989
Intake apparatus for internal combustion engine
NIPPON DENSO CO12 citations74
US5080065AJan 14, 1992
Air intake control system for an internal combustion engine
NIPPON DENSO CO15 citations73
Showing the top 50 of 52 patents by PatentIndex Score.