Seiji Ishida
44Patents
11h-index
103Co-inventors
78Inventor score
Filing activity: Oct 5, 1989 → Feb 18, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6173762A | Heat exchanger tube for falling film evaporator | Mechanical Engineering; Lighting; Heating | 30 | Expired |
| US6704212B2 | PWM inverter with long carrier wave insertion | Electricity | 26 | Expired |
| US7570085B2 | Gate driver circuit for switching device | Electricity | 21 | Active |
| US6642689B2 | Control apparatus for power converter | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5590711A | Heat transfer tube for absorber | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5631819A | Power converter | Electricity | 17 | Expired |
| US6496397B2 | Inverter device | Electricity | 17 | Expired |
| US6262294A | Process for continuously producing monomer components from aromatic polyester | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6556464B2 | PWM converter system | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6058036A | Inverter apparatus having operation specifications determined by type of I/O block which is connected to basic control unit | Electricity | 13 | Expired |
| US6147470A | Device for controlling induction motor and method of controlling the same | Electricity | 13 | Expired |
| US6556460B2 | Method for controlling a vehicle provided with an electric power converter | Electricity | 11 | Expired |
| US5095878A | Air/fuel ratio control system for internal combustion engine | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US5574352A | Frequency control method for inverter and apparatus therefor | Emerging Cross-Sectional Technologies | 10 | Expired |
| US8924100B2 | Hybrid construction machine | Emerging Cross-Sectional Technologies | 8 | Active |
| US5300872A | Method and apparatus for control of inverter | Electricity | 8 | Expired |
| US5077971A | Air/fuel ratio control system for an internal combustion engine | Physics | 7 | Expired |
| US10450723B2 | Hybrid construction machinery | Emerging Cross-Sectional Technologies | 7 | Active |
| US6611124B2 | Control apparatus of induction motor | Electricity | 6 | Expired |
| US6657412B2 | Pulse width modulation method, pulse width modulator and power converter | Electricity | 5 | Expired |
| US9399856B2 | Hydraulic working machine | Emerging Cross-Sectional Technologies | 4 | Active |
| US5445682A | Method of applying surface hydrophilic treatment to heat-transfer tube | Emerging Cross-Sectional Technologies | 4 | Expired |
| US9431879B2 | Generator motor and electric vehicle using same | Emerging Cross-Sectional Technologies | 3 | Active |
| US9421873B2 | Construction machine | Emerging Cross-Sectional Technologies | 3 | Active |
| US8950180B2 | Hybrid construction machine | Fixed Constructions | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.