US2917442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making electroluminescent layers
Assignee: Societe dElectronique et dAutomatisme SA
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Filing: 1956-12-28
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Granted: 1959-12-15
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Expires: 1976-12-28
Abstract
No abstract record available.
Inventors
- 👤 Hanlet Jacques Marie Noel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:52
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/14; H05B33/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A METHOD OF MAKING AN ELECTROLUMINESCENT COATING OF AT LEAST ONE ACTIVATING OXIDE AND ONE ACTIVATED OXIDE UPON AN ARMATURE OF AN ELECTRO-OPTICAL CONVERTER WHICH COMPRISES, THERMALLY EVAPORATING WITHIN AN EVACUATED VESSEL A MIXTURE OF MATERIALS SELECTED FROM THE CLASS CONSISTING OF THE METALS AND METALLOIDS WHICH ARE TO MAKE UP SAID OXIDE COATING, CONDENSING THE EVAPORATED MATERIALS UPON THE SURFACE OF AN INTERMEDIATE BASE PLATE TO FORM AN ALLOY, TRANSFERRING PARTICLES OF SAID ALLOY TO AN ARMATURE BY CATHODIC PROJECTION WHEREIN THE ALLOY SERVES AS A CATHODE AND THE ARMATURE SERVES AS AN ANODE PLATE, OXIDIZING THE TRANSFERRED PARTICLES TO PRODUCE AN OXIDE COATING, AND HEATING SAID OXIDE COATING TO EFFECT CRYSTALLIZATION THEREOF, THE QUANTITY OF ACTIVATING OXIDE IN THE COATING BEING MAINTAINED AT NOT MORE THAN 1% OF THE WEIGHT OF THE ACTIVATED OXIDE.
Claim 2
Independent Claim
136 words
A METHOD OF MAKING AN ELECTROLUMINESCENT COATING OF AT LEAST ONE ACTIVATING OXIDE AND ONE ACTIVATED OXIDE UPON AN ARMATURE OF AN ELECTRO-OPTICAL CONVERTER WHICH COMPRISES, THERMALLY EVAPORATING WITHIN AN EVACUATED VESSEL A MIXTURE OF MATERIALS SELECTED FROM THE CLASS CONSISTING OF THE METALS AND METALLOIDS WHICH ARE TO MAKE UP SAID OXIDE COATING, CONDENSING THE EVAPORATED MATERIALS UPON THE SURFACE OF AN INTERMEDIATE BASE PLATE TO FORM AN ALLOY, TRANSFERRING PARTICLES OF SAID ALLOY TO AN ARMATURE BY CATHODIC PROJECTION WHEREIN THE ALLOY SERVES AS A CATHODE AND THE ARMATURE SERVES AS AN ANODE PLATE, OXIDIZING THE TRANSFERRED PARTICLES TO PRODUCE AN OXIDE COATING, AND HEATING SAID OXIDE COATING TO EFFECT CRYSTALLIZATION THEREOF, THE QUANTITY OF ACTIVATING OXIDE IN THE COATING BEING MAINTAINED AT NOT MORE THAN 1% OF THE WEIGHT OF THE ACTIVATED OXIDE.
References Cited (Backward Citations)
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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) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |