Karmen D. Cox
15Patents
11h-index
11Co-inventors
69Inventor score
Filing activity: Sep 4, 1975 → Jan 15, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5668535A | Filter condition sensor and indicator | Mechanical Engineering; Lighting; Heating | 70 | Expired |
| US6011331A | Electric motor having an improved airflow cooling system | Emerging Cross-Sectional Technologies | 45 | Expired |
| US4641557A | Electronically controlled power saw | Emerging Cross-Sectional Technologies | 45 | Expired |
| US6232693A | Switched reluctance motor having stator inserts for noise reduction, magnet positioning, and coil retention | Electricity | 43 | Expired |
| US5703456A | Power converter and control system for a motor using an inductive load and method of doing the same | Electricity | 31 | Expired |
| US5014908A | Control circuit using a sulphonated fluorocarbon humidity sensor | Physics | 31 | Expired |
| US4068179A | Electronic cycle-select switching system | Physics | 21 | Expired |
| US6008608A | User operated switch and speed control device for a wet/dry vacuum | Electricity | 19 | Expired |
| US4047082A | Variable threshold starting circuit for induction motor | Electricity | 15 | Expired |
| US5517746A | Variable speed direct drive drill press/router | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4694275A | Digital capacitance incremental encoder | Electricity | 12 | Expired |
| US4429205A | Induction heating apparatus | Electricity | 9 | Expired |
| US7486041B2 | Electric motor with adjustable timing | Electricity | 7 | Active |
| US9503001B2 | Remotely-programmable control circuit for single-phase motor | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10965176B2 | Electric motors with pole biasing | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.