Direct Drive Systems, Inc.
17Patents
16Active
17Granted
52Portfolio score
Filing activity: May 21, 2007 → Oct 9, 2015 · 16 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7710081B2 | Electromechanical energy conversion systems | Emerging Cross-Sectional Technologies | 65 | Active |
| US7573144B1 | Reconfigurable power system using multiple phase-set electric machines | Emerging Cross-Sectional Technologies | 27 | Active |
| US8040007B2 | Rotor for electric machine having a sleeve with segmented layers | Emerging Cross-Sectional Technologies | 22 | Active |
| US7960948B2 | Electromechanical energy conversion systems | Emerging Cross-Sectional Technologies | 22 | Active |
| US8253298B2 | Slot configuration of an electric machine | Emerging Cross-Sectional Technologies | 16 | Active |
| US8154158B2 | Cooling an electrical machine | Electricity | 13 | Active |
| US8247938B2 | Rotor for electric machine having a sleeve with segmented layers | Emerging Cross-Sectional Technologies | 12 | Active |
| US7859212B2 | Electric drive system with redundancy | Electricity | 11 | Active |
| US8179009B2 | Rotor for an electric machine | Emerging Cross-Sectional Technologies | 11 | Active |
| US8183734B2 | Hybrid winding configuration of an electric machine | Emerging Cross-Sectional Technologies | 10 | Active |
| US8421297B2 | Stator wedge for an electric machine | Emerging Cross-Sectional Technologies | 10 | Active |
| US8310123B2 | Wrapped rotor sleeve for an electric machine | Emerging Cross-Sectional Technologies | 9 | Active |
| US8350432B2 | Electric machine | Emerging Cross-Sectional Technologies | 8 | Active |
| US8237320B2 | Thermally matched composite sleeve | Emerging Cross-Sectional Technologies | 8 | Active |
| US8415854B2 | Stator for an electric machine | Emerging Cross-Sectional Technologies | 6 | Active |
| US10263547B2 | Permanent magnet motor control for electric subsea pump | Fixed Constructions | 2 | Active |
| US8334630B2 | Stator for an electric machine | General | 0 | Revoked |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.