US3200279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent element employing chrome iron plates
Assignee: US Philips Corp
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Filing: 1961-02-01
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Granted: 1965-08-10
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Expires: 1981-02-01
Abstract
No abstract record available.
Inventors
- 👤 Westerveld Willem
- 👤 Nijland Louis Marius
- 👤 Janssens Henri Hubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:16
CPC Classifications
C; C03; C03C; C03C4/00; C03C4/12; C23; C23D; C23D3/00; H; H05; H05B; H05B33/00; H05B33/12; H05B33/20; H05B33/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
AN ELECTROLUMINESCENT ELEMENT COMPRISING A LAYER OF GLASS-ENAMEL IN WHICH THE ELECTROLUMINESCENT MATERIAL IS EMBEDDED AND WHICH IS PROVIDED, ON ONE SIDE, WITH A METAL CARRIER AND, ON ITS OTHER SIDE, WITH A CONDUCTIVE LAYER WHICH IS PERMEABLE TO THE RADIATION EMITTED BY THE ELECTROLUMINESCENT LAYER UPON APPLYING A POTENTIAL BETWEEN THE CARRIER AND THE CONDUCTIVE LAYER, CHARACTERIZED IN THAT THE SURFACE LAYER OF THE METAL CARRIER CONSISTS OF A METAL WHICH CAN GIVE RISE TO AN OXIDE LAYER WHICH IS COHERENT IN ITSELF AND SATISFACTORILY ADHERENT TO THE METAL, SAID METAL BEING SELECTED FROM THE GROUP CONSISTING OF ZR, TI, TA, AL AND CR.
Claim 2
Dependent Claim
105 words
AN ELECTROLUMINESCENT ELEMENT COMPRISING A LAYER OF GLASS-ENAMEL IN WHICH THE ELECTROLUMINESCENT MATERIAL IS EMBEDDED AND WHICH IS PROVIDED, ON ONE SIDE, WITH A METAL CARRIER AND, ON ITS OTHER SIDE, WITH A CONDUCTIVE LAYER WHICH IS PERMEABLE TO THE RADIATION EMITTED BY THE ELECTROLUMINESCENT LAYER UPON APPLYING A POTENTIAL BETWEEN THE CARRIER AND THE CONDUCTIVE LAYER, CHARACTERIZED IN THAT THE SURFACE LAYER OF THE METAL CARRIER CONSISTS OF A METAL WHICH CAN GIVE RISE TO AN OXIDE LAYER WHICH IS COHERENT IN ITSELF AND SATISFACTORILY ADHERENT TO THE METAL, SAID METAL BEING SELECTED FROM THE GROUP CONSISTING OF ZR, TI, TA, AL AND CR.
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) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |