US3672932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for screening cathode ray tubes including salvaging of excess phosphor slurry
Assignee: RCA Licensing Corp
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Filing: 1969-06-24
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Granted: 1972-06-27
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Expires: 1989-06-24
Abstract
Abstract A PROCESS FOR MAKING A PHOSPHOR SCREEN FOR A CATHODE RAY TUBE HAVING A FACEPLATE PANEL WHICH IS IN ONE OF A PLURALITY OF SIZE RANGES. FIRST, A QUANTITY OF PHOSPHOR SLURRY IN EXCESS TO THAT REQUIRED FOR THE SCREEN IS DISPENSED INTO THE PANEL. THE SIZE RANGE OF THE PANEL IS SENSED AND A SLURRY COLLECTOR MEANS OF THE PROPER SIZE IS SELECTED FROM A PLURALITY OF SUCH COLLECTOR MEANS AND MOVED INTO A SALVAGE POSITION WITH RESPECT TO THE PANEL. THE PHOSPHOR SLURRY IS SPREAD OVER THE INNER SURFACES OF THE PANEL AND THE PANEL IS SPUN TO FLING THE EXCESS SLURRY THEREFROM INTO SAID SLURRY COLLECTION MEANS. THEN, THE EXCESS SLURRY IS RECOVERED FROM THE SLURRY COLLECTION MEANS.
Inventors
- 👤 Frank Thomas D Augustine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:43
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/221; H01J9/223
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |