US3231775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cascaded phosphor layers for color display including one of discrete coherent particles
Assignee: RCA Corp
•
Filing: 1961-12-27
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Granted: 1966-01-25
•
Expires: 1981-12-27
Abstract
No abstract record available.
Inventors
- 👤 Pritchard Dalton Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:37
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/30; H01J29/32; H01J29/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A LUMINESCENT SCREEN COMPRISING A PLURITY OF SUPERIMPOSED LAYERS OF DIFFERENT COLOR LIGHT EMITTING PHOSPHORS, ONE OF SAID LAYERS COMPRISING DISCRETE COHERENT PARTICLES AND ANOTHER OF SAID LAYERS COMPRISING AN EVAPORATED FILM.
Claim 2
Dependent Claim
32 words
A LUMINESCENT SCREEN COMPRISING A PLURITY OF SUPERIMPOSED LAYERS OF DIFFERENT COLOR LIGHT EMITTING PHOSPHORS, ONE OF SAID LAYERS COMPRISING DISCRETE COHERENT PARTICLES AND ANOTHER OF SAID LAYERS COMPRISING AN EVAPORATED FILM.
References Cited (Backward Citations)
US2590018A
Cited
US2958002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |