Patent US2920003A successfully refreshed from Google Patents.
US2920003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated phosphor particles
Assignee: RCA Corp
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Filing: 1958-06-11
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Granted: 1960-01-05
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Expires: 1978-06-11
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:35
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/221; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/20; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
28 words
A LUMINESCENT MATERIAL COMPRISING PHOSPHOR PARTICLES SELECTED FROM THE GROUP CONSISTING OF SILVER-ACTIVATED ZINC SULFIDE AND SILVER-ACTIVATED ZINC-CADUMIUM SULFIDE, EACH PARTICLE HAVING A THIN COATING OF ZICONIUM PHOSPHATE.
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) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |