Shigeo Hidai
10Patents
7h-index
30Co-inventors
62Inventor score
Filing activity: Sep 19, 1995 → Nov 28, 2006
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5632250A | Gas fuel supply system for vehicle | Emerging Cross-Sectional Technologies | 42 | Expired |
| US6692404B2 | Engine control system and method for hybrid vehicle | Emerging Cross-Sectional Technologies | 33 | Expired |
| US6687603B2 | Assist control apparatus for hybrid vehicle | Emerging Cross-Sectional Technologies | 27 | Expired |
| US6092369A | Catalyst deterioration-determining system for internal combustion engines using compressed natural gas | Emerging Cross-Sectional Technologies | 27 | Expired |
| US6857491B2 | Control apparatus for hybrid vehicle | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5983714A | System for detecting failure of fuel pressure sensor | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6616570B2 | Control apparatus for hybrid vehicle | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5941212A | Air-fuel ratio control system for internal combustion engines | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US7380543B2 | Fuel vapor release suppression system for fuel tank | Emerging Cross-Sectional Technologies | 6 | Active |
| US6176080A | Oxygen concentration sensor abnormality-detecting system for internal combustion engines | Mechanical Engineering; Lighting; Heating | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.