Ryoji Habuchi
31Patents
12h-index
53Co-inventors
84Inventor score
Filing activity: Feb 7, 1990 → May 23, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5006093A | Hydraulic control apparatus for vehicle power transmitting system having continuously variable transmission | Mechanical Engineering; Lighting; Heating | 122 | Expired |
| US6514175B2 | Hydraulic control system for transmissions | Mechanical Engineering; Lighting; Heating | 113 | Expired |
| US5052247A | Hydraulic control apparatus for belt-and-pulley type continuously variable transmission, incorporating fail-safe protective means | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5527233A | Hydraulic control apparatus for controlling an engaging state of a lock-up clutch of an automatic transmission | Emerging Cross-Sectional Technologies | 21 | Expired |
| US5086672A | Hydraulic control apparatus for vehicle transmission system, incorporating valves for reverse inhibit valve | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US6443871B1 | Control apparatus and method of belt-type continuously variable transmission | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6055879A | Hydraulic control system for automatic transmission of multiple clutch type which prevents two clutches from being simultaneously engaged | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6835147B2 | Hydraulic pressure controller for automatic transmission | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US5851164A | Hydraulic control system for automatic transmission of multiple clutch type | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6942598B2 | Drive control apparatus for a vehicle and control method thereof | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US5050715A | Hydraulic control apparatus for vehicle power transmitting system having fluid coupling incorporating lock-up clutch | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US5067603A | Apparatus for controlling hydraulically operated clutch in vehicle transmission system, including two valves for engaging and disengaging the clutch | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US6672981B2 | Transmission shift control apparatus arranged to perform compulsory shift-down action of continuously variable transmission | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US7044890B2 | Control apparatus and method for automatic transmission | Emerging Cross-Sectional Technologies | 11 | Expired |
| US7951026B2 | Oil pressure control apparatus | Mechanical Engineering; Lighting; Heating | 11 | Active |
| US5052980A | Hydraulic control apparatus for vehicle power transmitting system having continuously variable transmission | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US8261883B2 | Vehicle power transmission device | Emerging Cross-Sectional Technologies | 8 | Active |
| US8066595B2 | Hydraulic control system for vehicular power transmitting mechanism | Mechanical Engineering; Lighting; Heating | 7 | Active |
| US6739998B2 | Hydraulic controller for an automatic transmission | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US7066860B2 | Driving system of motor vehicle | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US6405115B2 | Shift control system for continuously variable transmissions | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US8894521B2 | Power transmission device and vehicle in which power transmission device is installed | Mechanical Engineering; Lighting; Heating | 5 | Active |
| US8328668B2 | Vehicle power transmission device | Emerging Cross-Sectional Technologies | 5 | Active |
| US8517871B2 | Vehicular belt-driven continuously variable transmission and control method thereof | Mechanical Engineering; Lighting; Heating | 5 | Active |
| US5279118A | Fluid coupling | Mechanical Engineering; Lighting; Heating | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.