Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11590887 | Control of high visibility vehicle light communication systems | David M. Tucker, STEPHEN T. POWERS, Andrew Coetzee, MIKE INCORVAIA, Julian Dench +3 more | 2023-02-28 |
| 11293185 | Attic stair assemblies and methods of installing attic stair assemblies | — | 2022-04-05 |
| 10958265 | Winch motor protection circuit | — | 2021-03-23 |
| 10700043 | Solid state power switch with optimized heat sink configuration | Richard Schweder | 2020-06-30 |
| 8749193 | Battery protection circuit for multiple battery power supply and charging system | — | 2014-06-10 |
| 8058700 | Surge overcurrent protection for solid state, smart, highside, high current, power switch | — | 2011-11-15 |
| 7672106 | Switching incandescent lamps and other variable resistance loads with a solid state, smart, high side driver having overcurrent and temperature sensing protection circuits | — | 2010-03-02 |
| 7468876 | Safety switch | — | 2008-12-23 |
| 7453224 | Sensing mechanical transitions from current of motor driving hydraulic pump or other mechanism | — | 2008-11-18 |
| 7408274 | Control and operating condition monitoring of dual series switch contactors for electric motor or other electrical load | John A. Melvin | 2008-08-05 |
| 7041075 | Orthotic foot devices for bare feet and methods for stabilizing feet | — | 2006-05-09 |
| 6288881 | Battery voltage regulator protection circuits | John A. Melvin | 2001-09-11 |
| 6073452 | Rapid chilling of foodstuffs | Charles D. Karp | 2000-06-13 |
| 5982142 | Storage battery equalizer with improved, constant current output filter, overload protection, temperature compensation and error signal feedback | John A. Melvin | 1999-11-09 |
| 5528122 | Battery voltage equalizer circuit | John A. Melvin | 1996-06-18 |
| 5041940 | Power transistor control circuit particularly for switching incandescent lamps | — | 1991-08-20 |
| 4479083 | DC Power system having battery voltage equalizer circuit | — | 1984-10-23 |
| 4317165 | Inverter having improved efficiency and regulation | — | 1982-02-23 |