Patent US3207573A successfully refreshed from Google Patents.
US3207573A
Expired / Lapsed
US
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Luminescent materials
Assignee: EIDP Inc
•
Filing: 1962-01-24
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Granted: 1965-09-21
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Expires: 1982-01-24
Abstract
No abstract record available.
Inventors
- 👤 Hans J Borchardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:14
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C09K11/7708; G; G21; G21K; G21K4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A DOUBLE OXIDE COMPOUND HAVING THE FORMULA WO3-M2O3 WHERE M IS SELECTED FROM THE GROUP CONSISTING OF YTRIUM AND LUTEIUM.
Claim 2
Dependent Claim
20 words
A DOUBLE OXIDE COMPOUND HAVING THE FORMULA WO3-M2O3 WHERE M IS SELECTED FROM THE GROUP CONSISTING OF YTRIUM AND LUTEIUM.
References Cited (Backward Citations)
US2372071A
Cited
US3114067A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |