US2887601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polarized electroluminescent phosphors and dielectrics
Assignee: TDK Micronas GmbH
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Filing: 1956-08-01
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Granted: 1959-05-19
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Expires: 1976-08-01
Abstract
No abstract record available.
Inventors
- 👤 George W Bain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:45
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/14; H05B33/145; H05B33/10; H05B33/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
AN ELECTROLUMINESCENT BODY COMPRISING: A COHERENT MASS MOLDABLE PLASTIC-TYPE MATERIAL HAVING RELATIVELY HIGH BREAKDOWN STRENGTH AND LOW DIELECTRIC CONSTANT, SAID MASS CONTAINING A SUFFICIENT QUANTITY OF DISBURSED PARTICLES OF PHOSPHOR MATERIAL TO EMIT VISIBLE LIGHT WHEN EXCITED IN AN ELECTRIC FIELD, SAID MASS FURTHER CONTAINING A POWDER OF HIGH DIELECTRIC CONSTANT ADMIXED WITH SAID PHOSPHOR MATERIAL, SAID DISBURSED PARTICLES OF PHOSPHOR MATERIAL AND SAID POWER BEING CHARACTERIZED BY POLARIZATION AND MICROSCOPIC CHAINS THROUGH SAID MASS.
Claim 2
Dependent Claim
75 words
AN ELECTROLUMINESCENT BODY COMPRISING: A COHERENT MASS MOLDABLE PLASTIC-TYPE MATERIAL HAVING RELATIVELY HIGH BREAKDOWN STRENGTH AND LOW DIELECTRIC CONSTANT, SAID MASS CONTAINING A SUFFICIENT QUANTITY OF DISBURSED PARTICLES OF PHOSPHOR MATERIAL TO EMIT VISIBLE LIGHT WHEN EXCITED IN AN ELECTRIC FIELD, SAID MASS FURTHER CONTAINING A POWDER OF HIGH DIELECTRIC CONSTANT ADMIXED WITH SAID PHOSPHOR MATERIAL, SAID DISBURSED PARTICLES OF PHOSPHOR MATERIAL AND SAID POWER BEING CHARACTERIZED BY POLARIZATION AND MICROSCOPIC CHAINS THROUGH SAID MASS.
References Cited (Backward Citations)
US2728870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |