Patent US4810532A successfully refreshed from Google Patents.
Patent US3243625A successfully refreshed from Google Patents.
US3243625A
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Cathodoluminescent screens including vanadates of yttrium, gadolinium or lutetium activated with europium or samarium
Assignee: Verizon Laboratories Inc
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Filing: 1964-05-28
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Granted: 1966-03-29
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Expires: 1984-05-28
Abstract
No abstract record available.
Inventors
- 👤 Albert K Levine
- 👤 Frank C Palilla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:49
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C09K11/7783; C09K11/7794; H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/187; H01J29/20; H01J29/30; H01J29/32; H01J29/322; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/256
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN A CATHODE RAY TUBE, A TRI-COLOR PHOSPHOR SCREEN COMPRISING ELECTRON-RESPONSIVE RED, BLUE AND GREEN-EMITING PHOSPHORS AFFIXED TO A SURFACE OF A SUBSTRATE IN A PREDETERMINED PATTERN, SAID RED-EMITTING PHOSPHOR COMPRISING YTTRIUM VANADATE ACTIVATED WITH EUROPIUM, SAID BLUE-EMITTING PHOSPHOR COMPRISING SILVER ACTIVATED ZINC SULFIDE, AND SAID GREEN-EMITTING PHOSPHOR COMPRISING SILVER ACTIVATED ZINC-CADMIUM SULFIDE, SAID SCREEN EMITTING WHITE LIGHT WHEN SAID RED, BLUE AND GREEN-EMITTING PHOSPHORS ARE BOMBARDED BY ELECTRON BEAMS OF PREDETERMINED INTENSITY.
Claim 2
Dependent Claim
73 words
IN A CATHODE RAY TUBE, A TRI-COLOR PHOSPHOR SCREEN COMPRISING ELECTRON-RESPONSIVE RED, BLUE AND GREEN-EMITING PHOSPHORS AFFIXED TO A SURFACE OF A SUBSTRATE IN A PREDETERMINED PATTERN, SAID RED-EMITTING PHOSPHOR COMPRISING YTTRIUM VANADATE ACTIVATED WITH EUROPIUM, SAID BLUE-EMITTING PHOSPHOR COMPRISING SILVER ACTIVATED ZINC SULFIDE, AND SAID GREEN-EMITTING PHOSPHOR COMPRISING SILVER ACTIVATED ZINC-CADMIUM SULFIDE, SAID SCREEN EMITTING WHITE LIGHT WHEN SAID RED, BLUE AND GREEN-EMITTING PHOSPHORS ARE BOMBARDED BY ELECTRON BEAMS OF PREDETERMINED INTENSITY.
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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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |