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US2900545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curved electroluminescent lamp
Assignee: GTE Sylvania Inc
•
Filing: 1953-07-21
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Granted: 1959-08-18
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Expires: 1973-07-21
Abstract
No abstract record available.
Inventors
- 👤 Richard M Rulon
- 👤 Drew Willard Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:44
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
AN ELECTROLUIMINESCENT LAMP COMPRISING A GLASS PLATE HAVING A CURED SURFACE, A LIGHT-TRANSMITTING ELECTRICALLYCONDUCTIVE COATING ON SAID SURFACE, A LAYER, OF PHOSPHOR EMBEDDED IN CERAMIC OVER SAID CONDUCTIVE LAYER, AND A SECOND CONDUCTIVE LAYER OVER SAID LAYER OF CERAMIC AND PHOSPHOR.
Claim 2
Dependent Claim
41 words
AN ELECTROLUIMINESCENT LAMP COMPRISING A GLASS PLATE HAVING A CURED SURFACE, A LIGHT-TRANSMITTING ELECTRICALLYCONDUCTIVE COATING ON SAID SURFACE, A LAYER, OF PHOSPHOR EMBEDDED IN CERAMIC OVER SAID CONDUCTIVE LAYER, AND A SECOND CONDUCTIVE LAYER OVER SAID LAYER OF CERAMIC AND PHOSPHOR.
References Cited (Backward Citations)
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US2689188A
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US2709765A
Cited
US2689189A
Cited
US2689190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |