US3018402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent lamp structures
Assignee: Westinghouse Electric Corp
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Filing: 1957-05-06
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Granted: 1962-01-23
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Expires: 1977-05-06
Abstract
No abstract record available.
Inventors
- 👤 Charles W Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:16
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
IN AN ELECTROLUMINESCENT LAMP STRUCTURE COMPRISING A PHOSPHOR-BEARING LAYER DISPOSED BETWEEN AN ELECTRICALLY CONDUCTIVE LAYER AND A LIGHT TRANSMITTING ELECTRICALLY CONDUCTIVE LAYER, THE IMPROVEMENT WHICH CONSISTS
Claim 2
Dependent Claim
26 words
IN AN ELECTROLUMINESCENT LAMP STRUCTURE COMPRISING A PHOSPHOR-BEARING LAYER DISPOSED BETWEEN AN ELECTRICALLY CONDUCTIVE LAYER AND A LIGHT TRANSMITTING ELECTRICALLY CONDUCTIVE LAYER, THE IMPROVEMENT WHICH CONSISTS
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) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |