Hiroyuki Hirano
133Patents
22h-index
161Co-inventors
93Inventor score
Filing activity: Sep 10, 1979 → Oct 17, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6258003A | Infinite speed ratio transmission device and assembly method thereof | Mechanical Engineering; Lighting; Heating | 109 | Expired |
| US4603602A | Method of controlling continuously variable transmission | Mechanical Engineering; Lighting; Heating | 65 | Expired |
| US5945808A | Hybrid electric vehicle with battery management | Emerging Cross-Sectional Technologies | 65 | Expired |
| US4589071A | Method and apparatus for controlling reduction ratio of continuously variable transmission with acceleration compensation | Performing Operations; Transporting | 64 | Expired |
| US6137250A | Controller for electric vehicle and electric vehicle using the same | Emerging Cross-Sectional Technologies | 62 | Expired |
| US4735113A | Creep torque and lock-up control for automatic transmission | Mechanical Engineering; Lighting; Heating | 52 | Expired |
| US7156195B2 | Cooling system for electric motor of vehicle | Electricity | 44 | Expired |
| US6460642B1 | High power cable aligning device for electric vehicle | Emerging Cross-Sectional Technologies | 40 | Expired |
| US4579021A | Method and apparatus for controlling line pressure in continuously variable transmission | Mechanical Engineering; Lighting; Heating | 39 | Expired |
| US4543077A | Method and apparatus for controlling continuously variable V-belt transmission | Performing Operations; Transporting | 36 | Expired |
| US4478105A | Hydraulic control system for continuously variable V-belt transmission with hydrodynamic transmission unit | Emerging Cross-Sectional Technologies | 35 | Expired |
| US4982110A | Clock generator circuit and a synchronizing signal detection method in a sampled format system and a phase comparator circuit suited for generation of the clock | Physics | 35 | Expired |
| US6215198A | Generating control device for hybrid vehicle | Emerging Cross-Sectional Technologies | 34 | Expired |
| US5343393A | Steering angle detecting apparatus for motor vehicles based on the phase difference between a steering angle detection signal and steering angle estimated signal | Performing Operations; Transporting | 34 | Expired |
| US5568322A | Image forming lens system | Physics | 32 | Expired |
| US5267086A | Soft focus lens system | Physics | 28 | Expired |
| US4597308A | Method and apparatus for controlling reduction ratio of continuously variable transmission | Performing Operations; Transporting | 27 | Expired |
| US4590561A | Method and apparatus for controlling reduction ratio of continuously variable transmission with accelerator pedal displacement speed compensation | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US4887461A | Magnetostriction type torque sensor | Physics | 24 | Expired |
| US4872155A | Clock generator circuit and a synchronizing signal detection method in a sampled format system and a phase comparator circuit suited for generation of the clock | Physics | 23 | Expired |
| US4576265A | Control system for hydraulic automatic clutch | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US6470985B1 | Generator control device for an electrical automobile | Emerging Cross-Sectional Technologies | 22 | Expired |
| US6561941B2 | Infinite speed ratio transmission | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US4566354A | Method and apparatus for controlling reduction ratio of continuously variable transmission with engine coolant temperature compensation | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US4908811A | Method and apparatus for data recording and reproducing with error reduction | Physics | 21 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.