US2921912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnesium-calcium fluorophosphate
Assignee: Westinghouse Electric Corp
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Filing: 1954-11-01
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Granted: 1960-01-19
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Expires: 1974-11-01
Abstract
No abstract record available.
Inventors
- 👤 Henry W Rimbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:42
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C09K11/7715; C09K11/7723; C09K11/7724; C09K11/7725
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A PHOSPHOR MATERIAL CONSISTING ESSENTIALLY OF AN ACTIVATED MATRIX OF THE FOLLOWING MATERIALS IN THE FOLLOWING PROPORTIONS: 2.15 TO 2.35 MOLES MGO AND 0.70 TO 0.85 MOLE CAO PER 1 MOLE OF P2O5, 2.50 TO 3.30 MOLES CAF2, AND ACTIVATED BY ONE OF THE GROUP CONSISTING OF 0.02 TO 0.10 MOLE OF CE AND 0.02 TO 0.10 MOLE CE+0.10 TO 0.40 MOLR MN.
Claim 2
Dependent Claim
63 words
A PHOSPHOR MATERIAL CONSISTING ESSENTIALLY OF AN ACTIVATED MATRIX OF THE FOLLOWING MATERIALS IN THE FOLLOWING PROPORTIONS: 2.15 TO 2.35 MOLES MGO AND 0.70 TO 0.85 MOLE CAO PER 1 MOLE OF P2O5, 2.50 TO 3.30 MOLES CAF2, AND ACTIVATED BY ONE OF THE GROUP CONSISTING OF 0.02 TO 0.10 MOLE OF CE AND 0.02 TO 0.10 MOLE CE+0.10 TO 0.40 MOLR MN.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |