US4415834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tungsten halogen lamp containing cyanogen
Assignee: Osram Sylvania Inc
•
Filing: 1979-06-08
•
Granted: 1983-11-15
•
Expires: 1999-06-08
Abstract
Abstract The gaseous filling of a tungsten halogen lamp includes cyanogen and a halogen or halide.
Inventors
- 👤 James P. Keenan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:16
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/50; Y; Y02; Y02B; Y02B20/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
An incandescent lamp comprising a tungsten filament disposed within a lamp envelope, the lamp envelope containing a gaseous filling including cyanogen and a halogen or halide.
Claim 2
Dependent Claim
26 words
An incandescent lamp comprising a tungsten filament disposed within a lamp envelope, the lamp envelope containing a gaseous filling including cyanogen and a halogen or halide.
References Cited (Backward Citations)
US2928977A
Cited
US3277330A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-14 | 1987-05-16 | 1987-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-14 | 1991-05-16 | 1991-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-14 | 1995-05-16 | 1995-11-15 | $7700.00 | Window Closed / Lapsed |