US3148299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent lamp having envelope of water-impermeable plastic having hydrophilic plastic liner
Assignee: General Electric Co
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Filing: 1961-01-04
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Granted: 1964-09-08
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Expires: 1981-01-04
Abstract
No abstract record available.
Inventors
- 👤 James C Devol
- 👤 Lawrence E Greene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:26
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/02; H05B33/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A LAMINATED EVACUATED ELECTROLUMINESCENT LAMP ASSEMBLY COMPRISING AN OUTER ENVELOPE OF PLASTIC SHEETS OF WHICH AT LEAST THE FRONT WHEET HAS A RELATIVELY HIGH IMPERMEABILITY TO WATER VAPOR AND IS LIGHT-TRANSMITTING, SAID OUTER PLASTIC SHEETS BEING SEALED TOGETHER AROUND THEIR MARGINAL EDGED AND ENCLOSING AN ELECTRICALLY ACTIVE ASSEMBLY INCLUDING FROM REAR TO FRONT A CONDUCTING METAL LAYER COATED WITH AN ELECTROLUMINESCENT PHOSPHOR, A SHEET OF CONDUCTIVE LIGHT-TRANSMITTING MATERIAL OVER SAID PHOSPHOR LAYER, AND A SHEET OF HYDROPHILIC PLASTIC MATERIAL OVER
Claim 2
Dependent Claim
80 words
A LAMINATED EVACUATED ELECTROLUMINESCENT LAMP ASSEMBLY COMPRISING AN OUTER ENVELOPE OF PLASTIC SHEETS OF WHICH AT LEAST THE FRONT WHEET HAS A RELATIVELY HIGH IMPERMEABILITY TO WATER VAPOR AND IS LIGHT-TRANSMITTING, SAID OUTER PLASTIC SHEETS BEING SEALED TOGETHER AROUND THEIR MARGINAL EDGED AND ENCLOSING AN ELECTRICALLY ACTIVE ASSEMBLY INCLUDING FROM REAR TO FRONT A CONDUCTING METAL LAYER COATED WITH AN ELECTROLUMINESCENT PHOSPHOR, A SHEET OF CONDUCTIVE LIGHT-TRANSMITTING MATERIAL OVER SAID PHOSPHOR LAYER, AND A SHEET OF HYDROPHILIC PLASTIC MATERIAL OVER
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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |