Toshihiro Oikawa
20Patents
10h-index
41Co-inventors
75Inventor score
Filing activity: Sep 27, 1985 → Jun 10, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5228423A | Dual-fuel engine | Emerging Cross-Sectional Technologies | 40 | Expired |
| USD498826S1 | Metal ring gasket | General | 38 | Expired |
| US4883027A | Valve operating system for internal combustion engines | Mechanical Engineering; Lighting; Heating | 32 | Expired |
| US4928641A | Lubricant supplying system for DOHC type multi-cylinder internal combustion engine | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US4796574A | SOHC type internal combustion engine | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US6412460B1 | Valve operating system in internal combustion engine | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US5456225A | Valve operating device for internal combustion engine | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US5979379A | Valve operating system in internal combustion engine | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US5529032A | Valve-operation control system for internal combustion engine | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US4911112A | Valve operating system for internal combustion engines | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US5027753A | Intake system of multi-cylinder internal combustion engine | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4637358A | Spark plug cap apparatus | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US4748946A | SOHC type internal combustion engine | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US4762099A | Valve actuating device of four-cycle internal combustion engine | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US4955121A | Method for producing a rocker arm for use in an internal combustion engine | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6125805A | Valve operating system in internal combustion engine | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US6447148B1 | Reflecting mirror manufacture method and lamp assembly | Emerging Cross-Sectional Technologies | 3 | Expired |
| US9625587B2 | Device for reading radiological images | Human Necessities | 0 | Active |
| US9347636B2 | Vehicle lighting unit | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US9823359B2 | Radiation image detection device | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.