Hidehiro Oba
79Patents
22h-index
61Co-inventors
91Inventor score
Filing activity: Jul 10, 1986 → May 7, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6077186A | Internal combustion engine starting drive control system for hybrid vehicle | Emerging Cross-Sectional Technologies | 104 | Expired |
| US6019699A | Synchronized coast downshift control for hybrid vehicles | Emerging Cross-Sectional Technologies | 80 | Expired |
| US6176807A | Drive control system for hybrid vehicles | Emerging Cross-Sectional Technologies | 71 | Expired |
| US6655485B1 | Hybrid drive system wherein clutch in engaged when engine speed has exceeded motor speed upon switching from motor drive mode to engine drive mode | Emerging Cross-Sectional Technologies | 56 | Expired |
| US5003950A | Apparatus for control and intake air amount prediction in an internal combustion engine | Mechanical Engineering; Lighting; Heating | 54 | Expired |
| US8231491B2 | Power output apparatus and hybrid vehicle | Emerging Cross-Sectional Technologies | 46 | Active |
| US8257213B2 | Hybrid driving apparatus, and control method thereof | Emerging Cross-Sectional Technologies | 40 | Active |
| US7806795B2 | Power output apparatus and hybrid vehicle with power output apparatus | Emerging Cross-Sectional Technologies | 40 | Active |
| US7695387B2 | Power output apparatus and hybrid vehicle equipped with power output apparatus | Emerging Cross-Sectional Technologies | 40 | Active |
| US6315068A | Drive control system for hybrid vehicles | Emerging Cross-Sectional Technologies | 37 | Expired |
| US8047314B2 | Power output apparatus, hybrid vehicle equipped with power output apparatus, and control method of power output apparatus | Emerging Cross-Sectional Technologies | 35 | Active |
| US6383114B1 | Hybrid vehicle control apparatus having a device for synchronizing friction members of one of two clutches corresponding to one of two different neutral states | Emerging Cross-Sectional Technologies | 34 | Expired |
| US8100207B2 | Power output apparatus, hybrid vehicle having the same, and method of controlling the power output apparatus | Emerging Cross-Sectional Technologies | 33 | Active |
| US6201312A | Drive control system for hybrid vehicles | Emerging Cross-Sectional Technologies | 31 | Expired |
| US6336889B1 | Drive control system for hybrid vehicles | Emerging Cross-Sectional Technologies | 29 | Expired |
| US8251165B2 | Power output apparatus, hybrid vehicle with the same, and control method of power output apparatus | Emerging Cross-Sectional Technologies | 29 | Active |
| US7931102B2 | Power output apparatus, vehicle equipped with power output apparatus, and control method of power output apparatus | Emerging Cross-Sectional Technologies | 27 | Active |
| US5199326A | Idle up of engine of automobile according to elevation of transmission oil temperature | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US8122983B2 | Power output apparatus, hybrid vehicle with the same, and method for controlling power output apparatus | Emerging Cross-Sectional Technologies | 24 | Active |
| US6409623B1 | Apparatus capable of driving vehicle in reverse direction with engine as well as electric motor | Emerging Cross-Sectional Technologies | 23 | Expired |
| US8215426B2 | Power output apparatus, vehicle equipped with power output apparatus, and control method of power output apparatus | Emerging Cross-Sectional Technologies | 23 | Active |
| US5472389A | Hydraulic control system for automatic transmission | Emerging Cross-Sectional Technologies | 22 | Expired |
| US7207404B2 | Hybrid drive system wherein clutch is engaged when engine speed has exceeded motor speed upon switching from motor drive mode to engine drive mode | Emerging Cross-Sectional Technologies | 22 | Expired |
| US6994177B2 | Hybrid drive system wherein clutch is engaged when engine speed has exceeded motor speed upon switching from motor drive mode to engine drive mode | Emerging Cross-Sectional Technologies | 21 | Expired |
| US6637530B1 | Hybrid vehicle control apparatus wherein battery is charged based on required charging amount and/or energy conversion efficiency of electric generator | Emerging Cross-Sectional Technologies | 21 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.