Shigeo Umehara
24Patents
3h-index
20Co-inventors
55Inventor score
Filing activity: Nov 4, 2010 → Jan 30, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9136757B2 | Power converter and refrigerating and air-conditioning apparatus | Emerging Cross-Sectional Technologies | 14 | Active |
| US9998049B2 | Inverter control device and air conditioner | Emerging Cross-Sectional Technologies | 13 | Active |
| US10686397B2 | Motor system, motor drive device, refrigeration cycle device, and air conditioner | Electricity | 4 | Active |
| US9647604B2 | Power conversion device, motor drive device including power conversion device, air blower and compressor including motor drive device, and air conditioner, refrigerator, and freezer including air blower and compressor | Emerging Cross-Sectional Technologies | 3 | Active |
| US9847735B2 | Power conversion device, motor drive control apparatus including the power conversion device, air blower and compressor including the motor drive control apparatus, and air conditioner including the air blower or the compressor | Emerging Cross-Sectional Technologies | 3 | Active |
| US9780717B2 | Power conversion device, motor driving device including power conversion device, blower and compressor including motor driving device, and air conditioner, refrigerator, and freezer including blower and compressor | Emerging Cross-Sectional Technologies | 2 | Active |
| US10833598B2 | Power conversion device, motor drive control device, blower, compressor, and air conditioner | Emerging Cross-Sectional Technologies | 1 | Active |
| US10938318B2 | AC-DC converting apparatus, motor drive control apparatus, blower, compressor, and air conditioner | Emerging Cross-Sectional Technologies | 1 | Active |
| US10658966B2 | Motor driving apparatus, refrigerator, and air conditioner | Electricity | 1 | Active |
| US9929670B2 | Power conversion device, motor drive control device equipped with power conversion device, compressor and blower equipped with motor drive control device, and air conditioner equipped with compressor or blower | Emerging Cross-Sectional Technologies | 1 | Active |
| US11101728B2 | Power converting apparatus, motor drive control apparatus, blower, compressor, and air conditioner | Emerging Cross-Sectional Technologies | 1 | Active |
| US9929637B2 | Power converting device | Emerging Cross-Sectional Technologies | 1 | Active |
| US9641121B2 | Power conversion device and motor drive device including power conversion device | Electricity | 1 | Active |
| US9531301B2 | Power conversion device and motor driving device | Electricity | 0 | Active |
| US10756666B2 | Electric-motor driving apparatus, electric motor system and refrigeration cycle apparatus | Emerging Cross-Sectional Technologies | 0 | Active |
| US10145596B2 | Outdoor device and air conditioner | Emerging Cross-Sectional Technologies | 0 | Active |
| US11031900B2 | Motor drive apparatus, refrigeration cycle apparatus and air conditioner | Electricity | 0 | Active |
| US9941780B2 | Power conversion device with correction of reactor inductance based on detected current | Emerging Cross-Sectional Technologies | 0 | Active |
| US11168901B2 | Refrigeration cycle apparatus | Electricity | 0 | Active |
| US9866140B2 | AC/DC power converting apparatus with AC source shortcircuiting for power factor correction and harmonic suppression | Emerging Cross-Sectional Technologies | 0 | Active |
| US9960702B2 | Switch device, power conversion device, motor drive device, air blower, compressor, air conditioner, refrigerator, and freezer | Electricity | 0 | Active |
| US11603998B2 | Outdoor unit and air conditioner | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10432131B2 | Motor drive apparatus and air conditioner | Electricity | 0 | Active |
| US11189439B2 | Power converting apparatus, motor drive apparatus, and air conditioner | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.