US3240975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iodine cycle incandescent electric lamp
Assignee: General Electric Co
•
Filing: 1963-02-20
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Granted: 1966-03-15
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Expires: 1983-02-20
Abstract
No abstract record available.
Inventors
- 👤 James F English
- 👤 Edward G Zubler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:46
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/52; H01K1/54; H01K1/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
AN IODINE CYCLE ELECTRIC INCANDESCENT LAMP COMPRISING A TUBULAR ENVELOPE HAVING AN INSIDE DIAMETER GREATER THAN 4 MM. AND LESS THAN ABOUT 20 MM. AND A LENGTH EXCEEDING THREE TIMES THE DIAMETER, A COILED TUNGSTEN WIRE FILAMENT EXTENDING AXIALLY SUBSTANTIALLY THE FULL LENGTH OF SAID ENVELOPE, CURRENT SUPPLY CONDUCTORS CONNECTED TO RESPECTIVE ENDS OF SAID FILAMENT AND SEALED THROUGH SAID ENVELOPE, A FILLING IN SAID ENVELOPE OF A GAS SELECTED FROM THE GROUP CONSISTING OF ARGON, KRYPTON AND XENON, AND A QUANTITY OF IODINE IN SAID ENVELOPE FUNCTIONING AS A REGENERATIVE GETTER RETURNING TO SAID FILAMENT TUNGSTEN
Claim 2
Dependent Claim
97 words
AN IODINE CYCLE ELECTRIC INCANDESCENT LAMP COMPRISING A TUBULAR ENVELOPE HAVING AN INSIDE DIAMETER GREATER THAN 4 MM. AND LESS THAN ABOUT 20 MM. AND A LENGTH EXCEEDING THREE TIMES THE DIAMETER, A COILED TUNGSTEN WIRE FILAMENT EXTENDING AXIALLY SUBSTANTIALLY THE FULL LENGTH OF SAID ENVELOPE, CURRENT SUPPLY CONDUCTORS CONNECTED TO RESPECTIVE ENDS OF SAID FILAMENT AND SEALED THROUGH SAID ENVELOPE, A FILLING IN SAID ENVELOPE OF A GAS SELECTED FROM THE GROUP CONSISTING OF ARGON, KRYPTON AND XENON, AND A QUANTITY OF IODINE IN SAID ENVELOPE FUNCTIONING AS A REGENERATIVE GETTER RETURNING TO SAID FILAMENT TUNGSTEN
References Cited (Backward Citations)
US2883571A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |