Robert Erhardt
16Patents
9h-index
20Co-inventors
72Inventor score
Filing activity: Jul 5, 1988 → Sep 3, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6853150B2 | Light emitting diode driver | Electricity | 266 | Expired |
| US5563473A | Electronic ballast for operating lamps in parallel | Emerging Cross-Sectional Technologies | 54 | Expired |
| US5111118A | Fluorescent lamp controllers | Emerging Cross-Sectional Technologies | 39 | Expired |
| US5187414A | Fluorescent lamp controllers | Emerging Cross-Sectional Technologies | 38 | Expired |
| US6507157B1 | Electronic ballast system with dual power and dimming capability | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6489729B1 | Auxiliary lighting system for high intensity discharge lamp | Electricity | 13 | Expired |
| US4952848A | Signal generating circuit for ballast control of discharge lamps | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6373199B1 | Reducing stress on ignitor circuitry for gaseous discharge lamps | Electricity | 10 | Expired |
| US6204614A | Bi-level output electronic high intensity discharge (HID) ballast system | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6713973B2 | System and method of automatic cycling control for HID lamps | Electricity | 8 | Expired |
| US7830095B2 | LED assembly and module | Electricity | 7 | Active |
| US5032767A | High frequency oscillator-inverter with improved regenerative power supply | Emerging Cross-Sectional Technologies | 4 | Expired |
| US6583588B2 | System and method of automatic cycling control for HID lamps | Electricity | 3 | Expired |
| US6853154B2 | Open loop bi-level ballast control | Electricity | 2 | Expired |
| US6686703B2 | High frequency electronic ballast | Emerging Cross-Sectional Technologies | 2 | Expired |
| US9035571B2 | Electronic ballast with dimming circuit | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.