Issued Patents All Time
Showing 51–65 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5070277 | Electrodless hid lamp with microwave power coupler | — | 1991-12-03 |
| 5055772 | High voltage ignition system monitor for spark initiated internal combustion engines | Robert B. Piejak | 1991-10-08 |
| 5003233 | Radio frequency powered large scale display | Joseph M. Proud | 1991-03-26 |
| 4937503 | Fluorescent light source based on a phosphor excited by a molecular discharge | A. Gary Sigai, Michael N. Alexander | 1990-06-26 |
| 4874984 | Fluorescent lamp based on a phosphor excited by a molecular discharge | A. Gary Sigai, Michael N. Alexander | 1989-10-17 |
| 4801846 | Rare earth halide light source with enhanced red emission | Jerry Kramer | 1989-01-31 |
| 4710679 | Fluorescent light source excited by excimer emission | A. Bowman Budinger | 1987-12-01 |
| 4672267 | High intensity discharge device containing oxytrihalides | William M. Keeffe, Richard W. Liebermann, Jakob Maya | 1987-06-09 |
| 4647821 | Compact mercury-free fluorescent lamp | George R. Gibbs, Joseph M. Proud | 1987-03-03 |
| 4636692 | Mercury-free discharge lamp | George R. Gibbs | 1987-01-13 |
| 4495435 | Plasma switch | Joseph M. Proud | 1985-01-22 |
| 4492898 | Mercury-free discharge lamp | George R. Gibbs | 1985-01-08 |
| 4480213 | Compact mercury-free fluorescent lamp | George R. Gibbs, Joseph M. Proud | 1984-10-30 |
| 4436762 | Low pressure plasma discharge formation of refractory coatings | Joseph M. Proud, Leslie A. Riseberg | 1984-03-13 |
| 4427924 | Enhanced electrodeless light source | Joseph M. Proud, Stephen Johnson | 1984-01-24 |