Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10443797 | Finite element and multi-distribution LED luminaire | George V. Preston | 2019-10-15 |
| 8317371 | LED dock light | Jamasbi Khosrow | 2012-11-27 |
| 8177397 | LED heat management system | Khosrow Jamasbi, Carlton Plunk | 2012-05-15 |
| 8076859 | Emergency sign power supply with battery charger | Khosrow Jamasbi | 2011-12-13 |
| 8070328 | LED downlight | Khosrow Jamasbi, Brian McMillin | 2011-12-06 |
| 8040078 | LED dimming circuit | Khosrow Jamasbi | 2011-10-18 |
| 7988327 | LED luminaire | Khosrow Jamasbi | 2011-08-02 |
| 7887205 | Rotatable emergency light with direct drive motor | Khosrow Jamasbi | 2011-02-15 |
| 7631985 | Finite element and multi-distribution LED luminaire | George V. Preston | 2009-12-15 |
| RE40619 | Efficient fluorescent lighting system | Eugene Graff | 2009-01-06 |
| 7172323 | Light emitting diode light spreader | Kenneth Sales | 2007-02-06 |
| D504705 | Combination exit sign and emergency lighting unit | Dennis K. Gregory, Khosrow Jamasbi, Charles Kelpin | 2005-05-03 |
| 6817732 | Efficiency fluorescent lighting system | Eugene Graff | 2004-11-16 |
| D489766 | Exit sign | Dennis K. Gregory, Khosrow Jamasbi, Charles Kelpin | 2004-05-11 |
| 6463436 | Interactive photometric calculations system | — | 2002-10-08 |
| 6346782 | Multiple lamp ballast system | — | 2002-02-12 |
| 6141234 | Power supply with battery charger for emergency sign | Khosrow Jamasbi | 2000-10-31 |
| 5815067 | Single control wire device for HID dimming | Khosrow Jamasbi, Robert D. Munson, James V. Olson | 1998-09-29 |
| 5633779 | Relay control circuit and method for controlling a relay | Khosrow Jamasbi, James V. Olson | 1997-05-27 |
| 5115165 | Safety lighting means for use with a high intensity discharge lamp | — | 1992-05-19 |
| 4931699 | Ballast system including a starting aid for a gaseous discharge lamp | — | 1990-06-05 |
| 4754201 | Magnetic low load factor series ballast circuit | Joseph W. Sanders | 1988-06-28 |
| 4691341 | Method of transferring digital information and street lighting control system | Joseph W. Sanders | 1987-09-01 |
| 4275337 | Starting and operating circuit for gaseous discharge lamps | Thomas A. Crane | 1981-06-23 |
| 4187449 | Discharge lamp operating circuit | — | 1980-02-05 |