Brian Eugene Elwell
33Patents
13h-index
14Co-inventors
78Inventor score
Filing activity: Nov 29, 1990 → Jan 28, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5142199A | Energy efficient infrared light switch and method of making same | Emerging Cross-Sectional Technologies | 164 | Expired |
| US7411489B1 | Self-adjusting dual technology occupancy sensor system and method | Physics | 120 | Active |
| US5293097A | Fully automatic energy efficient lighting control and method of making same | Emerging Cross-Sectional Technologies | 118 | Expired |
| US7486193B2 | Occupancy sensor network | Emerging Cross-Sectional Technologies | 53 | Active |
| US5281961A | Motion detection sensor with computer interface | Emerging Cross-Sectional Technologies | 50 | Expired |
| USD678097S1 | Sensor | General | 33 | Active |
| USRE37135E | Fully automatic energy efficient lighting control and method of making same | General | 30 | Expired |
| USD376130S | Ultrasonic wall switch | General | 26 | Expired |
| US5811963A | Line powered DC power supply | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5394035A | Rate of change comparator | Electricity | 21 | Expired |
| US7541924B2 | Infrared occupancy sensor | Physics | 20 | Active |
| US5319283A | Dimmer switch with gradual reduction in light intensity | Physics | 18 | Expired |
| US7777632B2 | Acoustic occupancy sensor | Emerging Cross-Sectional Technologies | 15 | Active |
| US5392631A | Range test chamber | Physics | 12 | Expired |
| US6841945B1 | Lighting control system and method | Emerging Cross-Sectional Technologies | 12 | Expired |
| US9215775B1 | Method and system for illumination management | Emerging Cross-Sectional Technologies | 9 | Active |
| US8848486B1 | Ultrasonic transmitter having adjustable output | Physics | 7 | Active |
| US5363688A | Method of calibrating motion detectors within a scaled environment | Physics | 4 | Expired |
| US9647459B2 | Distributed low voltage power systems | Electricity | 3 | Active |
| US9686838B2 | Self-learning auto-cutoff daylight detection control for light fixtures | Emerging Cross-Sectional Technologies | 2 | Active |
| US9812874B2 | Distributed low voltage power systems | Electricity | 2 | Active |
| US8467164B2 | Self optimizing electrical switching device | Electricity | 2 | Active |
| US9157996B1 | Multiple ultrasonic preamplifiers with independent automatic gain control | Physics | 2 | Active |
| US9591711B2 | Method and system for illumination management | Emerging Cross-Sectional Technologies | 1 | Active |
| US9755741B1 | Visible-light based communication and occupancy detection | Electricity | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.