US3594207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ray tube manufacture
Assignee: Ford Motor Co
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Filing: 1969-05-01
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Granted: 1971-07-20
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Expires: 1989-05-01
Abstract
Abstract THIS INVENTION RELATES TO A PROCESS FOR THE PREPARATION OF THE ACTIVE FACE OF A CATHODE RAY TUBE EMPLOYING AS THE PHOSPHOR EUROPIUM DOPED YTTRIUM OXIDE OR GADOLINIUM OXIDE. THE YTTRIUM OXIDE OR GADOLINIUM OXIDE IS PROTECTED DURING MANUFACTURE BY A FLUORIDE COATING DEPOSITED FROM A BUFFERED SUSPENSION.
Inventors
- 👤 William Allie Jr
- 👤 Richard H Marsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:54
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C09K11/7701; H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/227; H01J9/2271
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |