US2634217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminescent screen for cathode-ray tubes
Assignee: American Television Inc
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Filing: 1949-05-19
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Granted: 1953-04-07
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Expires: 1969-05-19
Abstract
No abstract record available.
Inventors
- 👤 Ulises A Sanabria
- 👤 Warren G Taylor
- 👤 Earl L Browning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:50
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; Y; Y10; Y10S; Y10S428/00; Y10S428/917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A FLUORESCENT SCREEN ASSEMBLY FOR A CATHODE RAY TUBE HAVING A GLASS SUPPORT PROVIDED WITH A COATING THEREON CARRIED IN A MATRIX, SAID COATING COMPRISING A MIXTURE CONTAINING FINELY DIVIDED PARTICLED OF FLUORESCENT MATERIAL AND FINELY DIVIDED PARTICLES OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF MANGANESE DIOXIDE AND TITANIUM SESQUIOXIDE WHICH ARE OPAQUE AND WHICH ARE STABLE UNDER ELECTRON BOMBARDMENT, THE MEMBERS OF SAID LAST-MENTIONED GROUP BEING PRESENT IN AMOUNTS BETWEEN ABOUT 5% AND ABOUT 100%, BY WIGHT OF SAID FLUORESCENT MATERIAL.
Claim 2
Dependent Claim
86 words
A FLUORESCENT SCREEN ASSEMBLY FOR A CATHODE RAY TUBE HAVING A GLASS SUPPORT PROVIDED WITH A COATING THEREON CARRIED IN A MATRIX, SAID COATING COMPRISING A MIXTURE CONTAINING FINELY DIVIDED PARTICLED OF FLUORESCENT MATERIAL AND FINELY DIVIDED PARTICLES OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF MANGANESE DIOXIDE AND TITANIUM SESQUIOXIDE WHICH ARE OPAQUE AND WHICH ARE STABLE UNDER ELECTRON BOMBARDMENT, THE MEMBERS OF SAID LAST-MENTIONED GROUP BEING PRESENT IN AMOUNTS BETWEEN ABOUT 5% AND ABOUT 100%, BY WIGHT OF SAID FLUORESCENT MATERIAL.
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) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |