David James Powell
16Patents
5h-index
23Co-inventors
66Inventor score
Filing activity: Aug 28, 1997 → Apr 5, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8662441B2 | Unmanned aerial vehicle launch system | Performing Operations; Transporting | 27 | Active |
| US5869767A | Ultrasonic transducer | Emerging Cross-Sectional Technologies | 21 | Expired |
| US8487500B2 | Cooling arrangement of an electrical machine | Electricity | 12 | Active |
| US9219395B2 | Large magnetically geared machines | Electricity | 6 | Active |
| US8508095B2 | Flux-switching machine | Electricity | 5 | Active |
| US8968042B2 | Electric marine propulsion device with integral magnetic gearing | Emerging Cross-Sectional Technologies | 5 | Active |
| US9841145B1 | Axial piercing mechanism for pressurized gas canister | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US9425655B2 | Magnetic pole-piece support | Electricity | 3 | Active |
| US9612085B2 | Payload launch system and method | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US9985512B2 | Large magnetically geared machines | Electricity | 2 | Active |
| US10102953B2 | Apparatus and methods for magnet retention | Electricity | 1 | Active |
| US10680502B2 | Magnetically geared apparatus and a pole piece for such apparatus | Electricity | 1 | Active |
| US11742740B2 | Magnetically geared apparatus | Electricity | 0 | Active |
| US11190094B2 | Magnetically geared apparatus | Electricity | 0 | Active |
| US8193750B2 | Electrical machine arrangement | Electricity | 0 | Active |
| US10978942B2 | Magnetically geared apparatus | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.