Koichi Hatamura
26Patents
8h-index
31Co-inventors
75Inventor score
Filing activity: Mar 15, 1985 → Jan 9, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4630575A | Intake system for multicylinder engine | Emerging Cross-Sectional Technologies | 34 | Expired |
| US4702207A | Intake arrangement for internal combustion engine | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4649871A | Intake system for V-type engine | Emerging Cross-Sectional Technologies | 21 | Expired |
| US7753037B2 | Engine | Emerging Cross-Sectional Technologies | 15 | Active |
| US4919087A | Intake system for V-type vehicle engine | Emerging Cross-Sectional Technologies | 15 | Expired |
| US7204491B2 | Metal gasket | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4686944A | Intake manifold structure for V-type engine | Emerging Cross-Sectional Technologies | 13 | Expired |
| US7096835B2 | Valve train device for an engine | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US4625687A | Intake arrangement for internal combustion engine | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5090392A | Control system for engine with supercharger | Emerging Cross-Sectional Technologies | 8 | Expired |
| US7069890B2 | Valve train device for an engine | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US7168403B2 | Valve train device for engine | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US4736714A | Engine intake system | Emerging Cross-Sectional Technologies | 6 | Expired |
| US8534261B2 | Four-cycle engine | Emerging Cross-Sectional Technologies | 4 | Active |
| US8468800B2 | Secondary air and exhaust gas recirculation for a four-stroke internal combustion engine | Emerging Cross-Sectional Technologies | 4 | Active |
| US8065988B2 | Four-cycle engine | Emerging Cross-Sectional Technologies | 3 | Active |
| US5377649A | Lubricating device for engine-driven supercharger | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US7469669B2 | Variable valve train mechanism of internal combustion engine | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US6651610B2 | Engine control system | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7398750B2 | Valve mechanism for internal combustion engine | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US7281504B2 | Valve train device for engine | Emerging Cross-Sectional Technologies | 2 | Expired |
| US9494061B2 | Variable valve system | Emerging Cross-Sectional Technologies | 1 | Active |
| US11492962B2 | Power generation device and automobile | Emerging Cross-Sectional Technologies | 1 | Active |
| US7308874B2 | Valve mechanism for an internal combustion engine | Emerging Cross-Sectional Technologies | 1 | Expired |
| US7980210B2 | Variable valve drive system for engine | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.