US2697183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-pressure electric discharge lamp
Assignee: Osram GmbH
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Filing: 1950-10-16
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Granted: 1954-12-14
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Expires: 1970-10-16
Abstract
No abstract record available.
Inventors
- 👤 Neunhocffer Otto
- 👤 Schulz Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:10
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/12; H01J61/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A HIGH PRESSURE ELECTRIC DISCHARGE LAMP COMPRISING AN ENVELOPE OF HIGH MELTING VITREOUS MATERIAL, AN INERT GASEOUS FILLING AT A PRESSURE BETWEEN 10 AND 40 ATMS. THEREIN CONSISTING OF A RARE GAS, SAID ENVELOPE CONTAINING INCANDESCENT ELECTRODES OF HIGH MELTING METAL AND ALSO CONTAINING BESIDES SAID INERT GASEOUS FILLING A LITTLE QUANTITY OF HALOGEN GAS OF LOW PARTIAL PRESSURE, THE HALOGEN GAS OPERATING TO COMBINE AT THE WALL TEMPERATURES OF SAID ENVELOPE WITH VAPORIZED OR SPUTTERED PARTICLES OF THE ELECTRODES AND TO DECOMPOSE AT THE HIGHER TEMPERATURE ADJACENT TO THE ELECTRODES SETTLING SAID PARTICLES AGAIN ONTO SAID ELECTRODES.
Claim 2
Dependent Claim
98 words
A HIGH PRESSURE ELECTRIC DISCHARGE LAMP COMPRISING AN ENVELOPE OF HIGH MELTING VITREOUS MATERIAL, AN INERT GASEOUS FILLING AT A PRESSURE BETWEEN 10 AND 40 ATMS. THEREIN CONSISTING OF A RARE GAS, SAID ENVELOPE CONTAINING INCANDESCENT ELECTRODES OF HIGH MELTING METAL AND ALSO CONTAINING BESIDES SAID INERT GASEOUS FILLING A LITTLE QUANTITY OF HALOGEN GAS OF LOW PARTIAL PRESSURE, THE HALOGEN GAS OPERATING TO COMBINE AT THE WALL TEMPERATURES OF SAID ENVELOPE WITH VAPORIZED OR SPUTTERED PARTICLES OF THE ELECTRODES AND TO DECOMPOSE AT THE HIGHER TEMPERATURE ADJACENT TO THE ELECTRODES SETTLING SAID PARTICLES AGAIN ONTO SAID ELECTRODES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-13 | 1958-06-14 | 1958-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-13 | 1962-06-14 | 1962-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-13 | 1966-06-14 | 1966-12-14 | $7700.00 | Window Closed / Lapsed |