Issued Patents All Time
Showing 126–150 of 231 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5027032 | Electronically controlled magnetic fluorescent lamp ballast | — | 1991-06-25 |
| 5021717 | Operating system for multiple fluorescent lamps | — | 1991-06-04 |
| 5017838 | Electronic incandescent lighting product | — | 1991-05-21 |
| 5015923 | Extra efficient electronic ballast for fluorescent lamps | — | 1991-05-14 |
| 5013974 | Electronic ballast with improved lamp current crest factor | — | 1991-05-07 |
| 5010468 | Power-line-operated high frequency power supply | — | 1991-04-23 |
| 5004947 | Fluorescent lamp ballast with high power factor | — | 1991-04-02 |
| 5004955 | Electronic ballast with shock protection feature | — | 1991-04-02 |
| 5004959 | Fluorescent lamp ballast with adjustable lamp current | — | 1991-04-02 |
| 5003227 | Power distribution for lighting systems | — | 1991-03-26 |
| 5001400 | Power factor correction in electronic ballasts | — | 1991-03-19 |
| 4997188 | Divided-paying travelers checks and system | — | 1991-03-05 |
| 4998044 | Efficacy incandescent light bulbs | — | 1991-03-05 |
| 4985664 | Electronic ballast with high power factor | — | 1991-01-15 |
| 4983887 | Controlled series-resonance-loaded ballast | — | 1991-01-08 |
| 4972126 | Ballasting system for fluorescent lamps | — | 1990-11-20 |
| 4970438 | Electronic fluorescent lamp ballasting system | — | 1990-11-13 |
| 4956581 | Flyback converter microwave oven power supply | — | 1990-09-11 |
| 4954754 | Controlled electronic ballast | — | 1990-09-04 |
| 4949015 | Bridge inverter ballast for fluorescent lamp | — | 1990-08-14 |
| 4943884 | Series-excited parallel-loaded resonant circuit | — | 1990-07-24 |
| 4942348 | Electronic air register controller | — | 1990-07-17 |
| 4939427 | Ground-fault-protected series-resonant ballast | — | 1990-07-03 |
| 4935669 | Two-mode electronic ballast | — | 1990-06-19 |
| 4928039 | Electronic ballast with lamp pre-conditioning | — | 1990-05-22 |