Keizo Shimada
13Patents
6h-index
28Co-inventors
62Inventor score
Filing activity: Feb 18, 1993 → May 11, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5446645A | Inverter apparatus and uinterruptible power supply using the same | Electricity | 243 | Expired |
| US7888894B2 | Electric motor control system, series hybrid vehicle, electric motor control apparatus, and electric motor control method | Emerging Cross-Sectional Technologies | 45 | Active |
| US5892674A | Method and apparatus for power converting AC into DC or DC into AC by converter having common phase connection | Electricity | 16 | Expired |
| US6084785A | Electric power converter | Electricity | 13 | Expired |
| US7583036B2 | Electrically driven vehicle | Emerging Cross-Sectional Technologies | 6 | Active |
| US7841434B2 | Electric drive system for vehicle, electric control system for vehicle, electric drive method for vehicle | Emerging Cross-Sectional Technologies | 6 | Active |
| US7315144B2 | AC drive apparatus, vehicle control apparatus, and power conversion method and vehicle control method | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7542312B2 | Electric power converter | Electricity | 4 | Active |
| US8523296B2 | Electric drive vehicle | Emerging Cross-Sectional Technologies | 4 | Active |
| US5959858A | Electric power conversion apparatus | Emerging Cross-Sectional Technologies | 4 | Expired |
| US7548439B2 | Electric power converter for reducing generated high frequency components | Electricity | 3 | Expired |
| US7025514B2 | Development apparatus for manufacturing semiconductor device | Physics | 2 | Expired |
| US8151915B2 | Electric drive vehicle | Emerging Cross-Sectional Technologies | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.