Andrew Johnsen
17Patents
3h-index
21Co-inventors
56Inventor score
Filing activity: Aug 26, 2004 → Dec 12, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7042165B2 | Driver circuit for LED vehicle lamp | Electricity | 43 | Expired |
| US7863827B2 | Ceramic metal halide lamp bi-modal power regulation control | Electricity | 34 | Active |
| US7841742B2 | Circuit board slot for an integral HID reflector lamp | Electricity | 5 | Active |
| US7057356B2 | High intensity discharge lamp with boost circuit | Emerging Cross-Sectional Technologies | 1 | Expired |
| US8076865B2 | Ignition for ceramic metal halide high frequency ballasts | Emerging Cross-Sectional Technologies | 1 | Active |
| US7982402B2 | Integrated igniter base for ceramic metal halide light source | Electricity | 1 | Active |
| US7211965B2 | High intensity discharge lamp with current sense resistor | Emerging Cross-Sectional Technologies | 1 | Expired |
| US7402956B2 | Ballast with zero voltage switching converter | Emerging Cross-Sectional Technologies | 0 | Expired |
| US7919926B2 | Aggregate ignition method in high frequency metal halide lamps | Emerging Cross-Sectional Technologies | 0 | Active |
| US9295129B1 | Turn on optimization | Electricity | 0 | Active |
| US10225908B2 | Active damping circuit | Electricity | 0 | Active |
| US7839098B2 | Microcontroller based ignition in high frequency ceramic metal halide lamps | Emerging Cross-Sectional Technologies | 0 | Active |
| US8378585B2 | High frequency integrated HID lamp with run-up current | Electricity | 0 | Active |
| US7931514B2 | Method of making an integral HID reflector lamp | Electricity | 0 | Active |
| US9992846B2 | Active damping circuit | Electricity | 0 | Active |
| US7230349B2 | High intensity discharge lamp ballast with anti-theft operating mode | Emerging Cross-Sectional Technologies | 0 | Expired |
| US10327295B2 | Multi string controller with independent current setting for each string | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.