Patent US3574129A successfully refreshed from Google Patents.
US3574129A
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Method for preventing hydrolysis of a rare earth oxide host phosphor in a coating slurry
Assignee: GTE Sylvania Inc
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Filing: 1969-02-28
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Granted: 1971-04-06
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Expires: 1989-02-28
Abstract
Abstract DISCLOSED ARE METHODS FOR PREVENTING THE HYDROLYSIS OF A RARE EARTH OXIDE HOST PHOSPHOR CONTAINED IN A SLURRY OF AN ORGANIC BINDER SENSITIZED WITH A DICHROMATE ION BY ADJUSTING THE PH OF THE SLURRY TO BETWEEN ABOUT 8 AND 11. ALSO DISCLOSED IS A METHOD FOR APPLYING A SLURRY OF THIS MATERIAL TO A SUBSTRATE.
Inventors
- 👤 Michael J Hammond
- 👤 Raymond F Herner
- 👤 Felix F Mikus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:49
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C09K11/7701; C09K11/02
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) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |