Hajime Urai
14Patents
2h-index
30Co-inventors
50Inventor score
Filing activity: Dec 6, 2005 → Feb 25, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7339132B2 | Method of current interruption using puffer type gas circuit breaker with combined-action of cylinder and piston | Electricity | 5 | Expired |
| US9959999B2 | Method for controlling power switching apparatus | Electricity | 2 | Active |
| US9520699B2 | Switchgear | Electricity | 2 | Active |
| US9899172B2 | Circuit breaker and circuit breaker operating method | Electricity | 1 | Active |
| US9620315B2 | Gas circuit breaker | Electricity | 1 | Active |
| US10199188B2 | Gas circuit breaker | Electricity | 1 | Active |
| US10699863B2 | Gas circuit breaker | Electricity | 0 | Active |
| US9870884B2 | Gas circuit breaker | Electricity | 0 | Active |
| US10256060B2 | Gas circuit breaker | Electricity | 0 | Active |
| US12034379B2 | Power conversion system | Electricity | 0 | Active |
| US9336974B2 | Gas circuit breaker | Electricity | 0 | Active |
| US10916394B2 | Gas circuit breaker | Electricity | 0 | Active |
| US10354821B2 | Gas circuit breaker | Electricity | 0 | Active |
| US10157719B2 | Gas circuit breaker | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.