Patent US3459673A successfully refreshed from Google Patents.
US3459673A
Expired / Lapsed
US
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Preparation of luminescent silica glass modified with a rare earth metal
Assignee: OI Glass Inc
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Filing: 1967-10-10
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Granted: 1969-08-05
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Expires: 1987-10-10
Abstract
No abstract record available.
Inventors
- 👤 William V Best
- 👤 Roland L Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:37
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C03; C03C; C03C3/00; C03C3/04; C03C3/06; C03C4/00; C03C4/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |