Takao Kojima
74Patents
16h-index
85Co-inventors
87Inventor score
Filing activity: Feb 25, 1983 → Aug 8, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6768417B2 | On-vehicle emergency report apparatus, emergency communication apparatus and emergency report system | Physics | 64 | Expired |
| US5895591A | Ceramic heater and oxygen sensor | Physics | 49 | Expired |
| US6542793B2 | Pedal apparatus for vehicles and a vehicle equipped with the same | Emerging Cross-Sectional Technologies | 43 | Expired |
| US4733056A | Heater backed with a ceramic substrate | Mechanical Engineering; Lighting; Heating | 42 | Expired |
| US5201228A | Pressure sensor | Emerging Cross-Sectional Technologies | 32 | Expired |
| US5443711A | Oxygen-sensor element | Physics | 30 | Expired |
| US5849165A | Oxygen sensor for preventing silicon poisoning | Physics | 26 | Expired |
| US5739626A | Piezoelectric sensor | Physics | 26 | Expired |
| US5189916A | Pressure sensor | Physics | 25 | Expired |
| US5020499A | Apparatus for detecting abnormality of oxygen sensor and controlling air/fuel ratio | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US6738705B2 | Vehicle running control apparatus and map information data recording medium | Performing Operations; Transporting | 24 | Expired |
| US5160598A | Oxygen sensor for air-fuel ratio control having a protective layer including an oxygen storage material | Physics | 23 | Expired |
| US4624770A | Air-fuel ratio sensor | Physics | 20 | Expired |
| US5214961A | Pressure sensor | Physics | 17 | Expired |
| US6240614A | Blind rivet disassembling device and method and production system using the method | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5528960A | Power transmission apparatus | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4477487A | Method of producing oxygen concentration cells | Physics | 14 | Expired |
| US6163239A | Duty driven solenoid valve | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4688015A | Gas sensor with ceramics substrate having surface-carried ceramics particles | Physics | 14 | Expired |
| US5538612A | Oxygen sensor element | Physics | 13 | Expired |
| US4629549A | Oxygen sensor | Physics | 13 | Expired |
| US4806739A | Plate-like ceramic heater | Electricity | 12 | Expired |
| US5451748A | Ceramic heater for oxygen sensor of the type having oxygen ion conductive tube of solid electrolyte | Physics | 12 | Expired |
| US5323643A | Device for detecting change in internal pressure of cylinder | Physics | 12 | Expired |
| US5326597A | Method of producing oxygen sensor for air-fuel ratio control having a protective layer including oxygen storage material | Physics | 11 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.