Jun Oyama
24Patents
7h-index
31Co-inventors
69Inventor score
Filing activity: Mar 15, 1988 → Sep 26, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5589672A | Circuit breaker with arc quenching device and vent | Electricity | 38 | Expired |
| US5569894A | Circuit breaker arc quenching device with venting structure including flapper valve | Electricity | 27 | Expired |
| US7348749B2 | Control device for synchronous motor | Electricity | 19 | Expired |
| US6246301A | High-frequency circuit apparatus | Electricity | 16 | Expired |
| US5023416A | Circuit breaker | Electricity | 12 | Expired |
| US7157876B2 | Motor magnetic pole position estimation device and control device | Electricity | 10 | Expired |
| US6621403B2 | Overload tripping device for circuit breaker | Electricity | 9 | Expired |
| US7325890B2 | Glove fitting device | Performing Operations; Transporting | 7 | Expired |
| US5184100A | Circuit breaker | Electricity | 5 | Expired |
| US10449701B2 | Molded product production system | Performing Operations; Transporting | 5 | Active |
| US6741859B2 | Code-division-multiple-access mobile communication system accomodating increased number of mobile stations | Electricity | 4 | Expired |
| US4884049A | Circuit breaker overcurrent tripping device | Electricity | 3 | Expired |
| US7174167B2 | Code-division-multiple-access mobile communication system accommodating increased number of mobile stations | Electricity | 3 | Expired |
| US4780579A | Circuit breaker | Electricity | 3 | Expired |
| US5164560A | Repulsion type circuit breaker control device | Electricity | 2 | Expired |
| US11173638B2 | Molded product production system | Performing Operations; Transporting | 2 | Active |
| US10632703B2 | Powdery material mixing and feeding device and compression-molding machine including the same | Performing Operations; Transporting | 1 | Active |
| US6400243B2 | Contact shoe device for circuit breaker | Electricity | 1 | Expired |
| US6150908A | Circuit breaker with metal melt isolation device | Electricity | 1 | Expired |
| US12300791B2 | Method for manufacturing energy storage device, and energy storage device | Emerging Cross-Sectional Technologies | 0 | Active |
| US12155060B2 | Energy storage device | Emerging Cross-Sectional Technologies | 0 | Active |
| USRE35507E | Repulsion type circuit breaker control device | General | 0 | Expired |
| US10772838B2 | Powdery material mixing degree measurement device, powdery material mixing and feeding system, and compression-molding machine including the same | Physics | 0 | Active |
| US8292607B2 | Powder compression molding machine | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.