Patent US3283194A successfully refreshed from Google Patents.
US3283194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent lamp with a barium titanate layer
Assignee: GTE Sylvania Inc
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Filing: 1955-11-16
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Granted: 1966-11-01
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Expires: 1975-11-16
Abstract
No abstract record available.
Inventors
- 👤 Richard M Rulon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:41
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/22; H05B33/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
IN AN ELECTROLUMINESCENT LAMP THE COMBINATION OF A METAL PLATE, A GLAZE OF A POWDERED MATERIAL OF HIGH DIELECTRIC CONSTANT OF THE OTHER OF THOUSANDS AND A CERAMIC OVER AT LEAST PART OF SAID METAL PLATE, AND A COATING OF ELECTROLUMINESCENT MATERIAL OVER SAID GLAZE.
Claim 2
Dependent Claim
45 words
IN AN ELECTROLUMINESCENT LAMP THE COMBINATION OF A METAL PLATE, A GLAZE OF A POWDERED MATERIAL OF HIGH DIELECTRIC CONSTANT OF THE OTHER OF THOUSANDS AND A CERAMIC OVER AT LEAST PART OF SAID METAL PLATE, AND A COATING OF ELECTROLUMINESCENT MATERIAL OVER SAID GLAZE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |