Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5159229 | Metal halide lamp having CO in gas fill | William M. Keeffe | 1992-10-27 |
| 5041041 | Method of fabricating a composite lamp filament | Thomas J. Patrician | 1991-08-20 |
| 5021703 | Metal halide lamp | William M. Keeffe | 1991-06-04 |
| 4950954 | Metal halide discharge lamp with electrodes having unequal thoria contents | Robert J. Karlotski, Simone P. Bazin | 1990-08-21 |
| 4881009 | Electrode for high intensity discharge lamps | — | 1989-11-14 |
| 4859239 | Tungsten electrode and method of producing same | — | 1989-08-22 |
| 4822312 | Electrode for high intensity discharge lamps | — | 1989-04-18 |
| 4233536 | Incandescent lamp getter | John F. Waymouth, George L. Duggan | 1980-11-11 |