Tomohiko Kawanabe
22Patents
8h-index
22Co-inventors
67Inventor score
Filing activity: Nov 30, 1984 → Apr 21, 1989
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4951632A | Exhaust gas component concentration sensing device and method of detecting failure thereof | Physics | 18 | Expired |
| US4752883A | Method for directing an up-shift operation for a vehicle having a manual transmission | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US4721084A | Method for controlling an oxygen concentration sensor for sensing an oxygen concentration in an exhaust gas of an internal combustion engine | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4665874A | Device for sensing an oxygen concentration in gaseous body with a pump current supply circuit and an air/fuel ratio control system using an oxygen concentration sensing device | Physics | 13 | Expired |
| US4767520A | Device for detecting air-fuel ratio of engine | Physics | 9 | Expired |
| US4870586A | Air-fuel ratio control system for an internal combustion engine with an engine load responsive correction operation | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US4868756A | Method of indicating a shift operation of a manual transmission gear of a vehicle | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4690121A | Air intake side secondary air supply system for an internal combustion engine with a duty ratio control operation | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US4757683A | Exhaust gas recirculation method for internal combustion engines | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4818362A | Oxygen concentration sensing apparatus | Physics | 6 | Expired |
| US4763265A | Air intake side secondary air supply system for an internal combustion engine with an improved duty ratio control operation | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US4808269A | Method for controlling an oxygen concentration sensing device | Physics | 4 | Expired |
| US4842711A | Device for detecting air-fuel ratio of engine | Physics | 4 | Expired |
| US4694803A | Air-fuel ratio control system for an internal combustion engine with an atmospheric pressure responsive correction operation | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US4843550A | Method of indicating a shift operation of a manual gearbox of a vehicle | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US4705012A | Air intake side secondary air supply system for an internal combustion engine with a duty ratio control operation | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US4732127A | Air/fuel ratio control system for an internal combustion engine with a function for preventing the blackening phenomenon of oxygen concentration sensor | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US4594977A | Secondary air system for internal combustion engine with deceleration control | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4649882A | Air intake side secondary air supply system for an internal combustion engine equipped with a fuel increment control system | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4715350A | Air intake side secondary air supply system for an internal combustion engine with a duty ratio control operation | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US4715352A | Air intake side secondary air supply system for an internal combustion engine with a duty ratio control operation | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US4706637A | Oxygen concentration sensing device for an air-fuel ratio control system of an automotive internal combustion engine | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.