Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6476556 | Electric lamp and interference film | — | 2002-11-05 |
| 6356020 | Electric lamp with optical interference coating | — | 2002-03-12 |
| 6049169 | Electric lamp having optical interference filter of alternating layers of SiO.sub.2 and Nb.sub.2 O.sub.5 --Ta.sub.2 O.sub.5 | Ray Gibson, Wolfgang Doetter | 2000-04-11 |
| 5606222 | Lighting system with a device for reducing system wattage | Dirk van Pijkeren | 1997-02-25 |
| 5510676 | High-pressure sodium lamp | Peter Jozef Vrugt | 1996-04-23 |