Tokio Kohama
87Patents
19h-index
90Co-inventors
87Inventor score
Filing activity: Mar 20, 1975 → Jun 7, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4489695A | Method and system for output control of internal combustion engine | Mechanical Engineering; Lighting; Heating | 172 | Expired |
| US4434767A | Output control system for multicylinder internal combustion engine | Mechanical Engineering; Lighting; Heating | 165 | Expired |
| US3975951A | Intake-air amount detecting system for an internal combustion engine | Emerging Cross-Sectional Technologies | 56 | Expired |
| US4677850A | Semiconductor-type flow rate detecting apparatus | Physics | 41 | Expired |
| US4089214A | Intake air amount detecting system | Physics | 34 | Expired |
| US6105552A | Abnormal combustion detection apparatus and method for internal combustion engine | Emerging Cross-Sectional Technologies | 34 | Expired |
| US5439204A | Vibration isolator | Mechanical Engineering; Lighting; Heating | 33 | Expired |
| US6104195A | Apparatus for detecting a condition of burning in an internal combustion engine | Physics | 31 | Expired |
| US5446790A | Intake sound control apparatus | Physics | 30 | Expired |
| US4399697A | Gas flow measuring apparatus | Physics | 28 | Expired |
| US4537172A | Fuel supply control apparatus for an internal-combustion engine | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5914457A | Activated charcoal canister | Performing Operations; Transporting | 26 | Expired |
| US4562818A | Method and apparatus for controlling the air-fuel ratio in an internal combustion engine | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US4682496A | Flow rate detecting apparatus having semiconductor chips | Physics | 25 | Expired |
| US4739483A | Automatic transmission control system for an automobile | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US5692052A | Engine noise control apparatus | Physics | 23 | Expired |
| US5970963A | Apparatus for preventing flow noise in throttle valve | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US4304129A | Gas flow measuring apparatus | Physics | 21 | Expired |
| US4691286A | Method and apparatus for detecting combustion variations in internal combustion engine | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US4478185A | Air-fuel ratio and ignition timing regulation by detecting engine running condition | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4074566A | Intake air amount detecting device for an internal combustion engine | Physics | 19 | Expired |
| US5925819A | Combustion monitoring apparatus for internal combustion engine | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US4702940A | Method of producing filter for air cleaner | Performing Operations; Transporting | 18 | Expired |
| US4592241A | Torque detector | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US4513721A | Air-fuel ratio control device for internal combustion engines | Physics | 18 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.