Frederick Beach
12Patents
8h-index
14Co-inventors
65Inventor score
Filing activity: Mar 31, 1992 → Sep 15, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5280223A | Control system for an electrically propelled traction vehicle | Emerging Cross-Sectional Technologies | 48 | Expired |
| US5432413A | Control system for an electrically propelled traction vehicle | Emerging Cross-Sectional Technologies | 42 | Expired |
| US5373219A | Control system for an electrically propelled traction vehicle | Emerging Cross-Sectional Technologies | 26 | Expired |
| US6150780A | AC motorized wheel control system | Emerging Cross-Sectional Technologies | 12 | Expired |
| US7956762B2 | Method and apparatus for power generation failure diagnostics | Physics | 11 | Active |
| US7996163B2 | Method and apparatus for detecting a short circuit in a DC link | Emerging Cross-Sectional Technologies | 10 | Active |
| US6054829A | AC motorized wheel control system | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5939846A | AC motorized wheel control system | Emerging Cross-Sectional Technologies | 8 | Expired |
| US8410739B2 | Method and apparatus for determining the operating condition of generator rotating diodes | Physics | 5 | Active |
| US7988593B2 | Creep control for motor system | Emerging Cross-Sectional Technologies | 5 | Active |
| US6041285A | AC motorized wheel control system | Emerging Cross-Sectional Technologies | 3 | Expired |
| US7437916B2 | In chassis determination of lug curve data in a machine with an electric drive propulsion system | Emerging Cross-Sectional Technologies | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.