Novel discharge lamp and coating
Abstract
Abstract A color corrected discharge lamp combination providing an emission with a very desirable color similar to that of an incandescent lamp, but maintaining the efficiency and long life advantages of a discharge lamp. The lamp is similar to a normal high-pressure mercury discharge lamp, but also contains a nonluminescent coating of silica, titania, magnesia or alumina or mixtures thereof on the interior surface of the outer envelope to provide a color-shift and a phosphor mixture coated over the nonluminescent coating. The phosphor mixture substantially comprises 70-90 percent by weight of yttrium vanadate phosphor or yttrium phosphate-vanadate phosphor and 10-30 percent by weight of magnesium fluoro-germanate or magnesium arsenate.
Inventors
- 👤 F Rokosz
- 👤 J Sausville
Bibliographic Details
Claims Analysis
Total Claims: 1References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |