Patent US3050655A successfully refreshed from Google Patents.
US3050655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent device
Assignee: GTE Sylvania Inc
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Filing: 1958-02-11
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Granted: 1962-08-21
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Expires: 1978-02-11
Abstract
No abstract record available.
Inventors
- 👤 Goldberg Paul
- 👤 Solomon Allen Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:35
CPC Classifications
H; H05; H05B; H05B33/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A DEVICE COMPRISING (A) AN ELECTROLUMINESCENT CELL PROVIDED WITH FIRST AND AND SECOND SEPARATE ELECTRICALLY CONDUCTING ELECTRODES, AT LEAST ONE OF SAID ELECTRODES PERMITTING THE PASSAGE OF LIGHT THERETHROUGH, AND (B) A LAYER PLACED BETWEEN SAID ELECTRODES COMPOSED OF A PHOSPHOR MIXTURE DISPERSED IN DIELECTRIC MEDIA, SAID MIXTURE CONSISTING OF 10-90% BY WEIGHT OF AN ELECTROLUMINESCENT PHOSPHOR COMPONENT SELECTED FROM THE GROUP CONSISTING OF THE SULFIDES OF ZINC AND ZINC CADMIUM AND 90-10% BY WEIGHT OF A NONELECTROLUMINESCENT PHOTOLUMINESCENT PHOSPHOR COMPONENT COMPOSED OF COPPER ACTIVATED CHLORIDE COACTIVATED ZINC SULFIDE, SAID ELECTROLUMINESCENT PHOSPHOR COMPONENT EMITTING VISIBLE LIGHT FALLING WITHIN A FIRST WAVELENGTH RANGE WHEN EXCITED BY AN ELECTRIC
Claim 2
Independent Claim
107 words
A DEVICE COMPRISING (A) AN ELECTROLUMINESCENT CELL PROVIDED WITH FIRST AND AND SECOND SEPARATE ELECTRICALLY CONDUCTING ELECTRODES, AT LEAST ONE OF SAID ELECTRODES PERMITTING THE PASSAGE OF LIGHT THERETHROUGH, AND (B) A LAYER PLACED BETWEEN SAID ELECTRODES COMPOSED OF A PHOSPHOR MIXTURE DISPERSED IN DIELECTRIC MEDIA, SAID MIXTURE CONSISTING OF 10-90% BY WEIGHT OF AN ELECTROLUMINESCENT PHOSPHOR COMPONENT SELECTED FROM THE GROUP CONSISTING OF THE SULFIDES OF ZINC AND ZINC CADMIUM AND 90-10% BY WEIGHT OF A NONELECTROLUMINESCENT PHOTOLUMINESCENT PHOSPHOR COMPONENT COMPOSED OF COPPER ACTIVATED CHLORIDE COACTIVATED ZINC SULFIDE, SAID ELECTROLUMINESCENT PHOSPHOR COMPONENT EMITTING VISIBLE LIGHT FALLING WITHIN A FIRST WAVELENGTH RANGE WHEN EXCITED BY AN ELECTRIC
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) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |