Akira Horie
28Patents
11h-index
53Co-inventors
78Inventor score
Filing activity: Sep 9, 1974 → May 20, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5459655A | Neutral-point clamped inverter device using semiconductor modules | Electricity | 44 | Expired |
| US5638266A | Free wheel diode arrangement for neutral point clamped electric power conversion apparatus | Performing Operations; Transporting | 39 | Expired |
| US5731970A | Power conversion device and semiconductor module suitable for use in the device | Emerging Cross-Sectional Technologies | 38 | Expired |
| US5461556A | Power converter | Electricity | 36 | Expired |
| US5801936A | Semiconductor module for a power conversion device | Electricity | 32 | Expired |
| US5929519A | Semiconductor module including switching device chips and diode chips | Emerging Cross-Sectional Technologies | 24 | Expired |
| US6274998A | Controller for electric vehicles | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5334258A | Washing method | Performing Operations; Transporting | 16 | Expired |
| US4785225A | Control apparatus for an induction motor | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4924168A | Control apparatus for PWM-controlled, variable voltage/variable frequency inverters | Electricity | 13 | Expired |
| US6556460B2 | Method for controlling a vehicle provided with an electric power converter | Electricity | 11 | Expired |
| US5583385A | Power converting device for reducing an induction problem | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5535114A | Power converter | Electricity | 8 | Expired |
| US4626888A | Gate turn-off thyristor | Electricity | 7 | Expired |
| US4672525A | Guard system for inverter apparatus | Electricity | 6 | Expired |
| US5400242A | Multi-series inverter arrangement | Electricity | 5 | Expired |
| US7176645B2 | Control apparatus for electric railcar | Performing Operations; Transporting | 5 | Expired |
| US3932147A | Method of reforming hydrocarbons | Chemistry; Metallurgy | 5 | Expired |
| US4500903A | Semiconductor GTO switching device with radially elongated cathode emitter regions of increasing length | Electricity | 3 | Expired |
| US4644240A | Method and apparatus for controlling reverse-conducting GTO thyristor | Electricity | 3 | Expired |
| US6633495B2 | DC apparatus and vehicle using the same | Electricity | 2 | Expired |
| US8924051B2 | Drive device for railway vehicle | Emerging Cross-Sectional Technologies | 2 | Active |
| US8708329B2 | Document conveying device and image forming apparatus including the same | Performing Operations; Transporting | 1 | Active |
| US10472197B2 | Image forming apparatus | Physics | 0 | Active |
| US9805295B2 | Image forming apparatus and operating device | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.