Elwell; Brian E.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Elwell; Brian E..The latest application filed is for "ultrasonic transmitter having adjustable output".
- Elwell; Brian E. - Tyrone GA
- Elwell; Brian E. - Culver City CA
- Elwell; Brian E. - Hawthorne CA
- Elwell; Brian E. - Brentwood CA
| Patent | Date |
|---|---|
| Ultrasonic transmitter having adjustable output Grant 9,607,607 - Elwell March 28, 2 | 2017-03-28 |
| Ultrasonic transmitter having adjustable output Grant 8,848,486 - Elwell September 30, 2 | 2014-09-30 |
| Self-adjusting dual technology occupancy sensor system and method Grant 7,411,489 - Elwell , et al. August 12, 2 | 2008-08-12 |
| Lighting control system and method Grant 6,841,945 - Elwell January 11, 2 | 2005-01-11 |
| Fully automatic energy efficient lighting control and method of making same Grant RE37,135 - Elwell April 17, 2 | 2001-04-17 |
| Line powered DC power supply Grant 5,811,963 - Elwell September 22, 1 | 1998-09-22 |
| Ultrasonic wall switch Grant D376,130 - Elwell , et al. December 3, 1 | 1996-12-03 |
| Range test chamber Grant 5,392,631 - Elwell February 28, 1 | 1995-02-28 |
| Rate of change comparator Grant 5,394,035 - Elwell February 28, 1 | 1995-02-28 |
| Fully automatic energy efficient lighting control and method of making same Grant 5,293,097 - Elwell March 8, 1 | 1994-03-08 |
| Motion detection sensor with computer interface Grant 5,281,961 - Elwell January 25, 1 | 1994-01-25 |
| Energy efficient infrared light switch and method of making same Grant 5,142,199 - Elwell August 25, 1 | 1992-08-25 |
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