US3420781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rare earth activated strontium lithium germanate phosphors
Assignee: Philips North America LLC
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Filing: 1966-03-14
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Granted: 1969-01-07
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Expires: 1986-03-14
Abstract
No abstract record available.
Inventors
- 👤 William A Mcallister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:55
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C09K11/7707
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
A PHOSPHOR COMPOSITION HAVING THE GENERAL FORMULATION U(SRO).W/2(LI2O).Y(GEO2):Z(TB OR EU) WHEREIN 0.16<=U/Y<=2.6, 0.1<=W/Y<=2, AND 0.04<=Z/Y<=0.2.
Claim 2
Dependent Claim
15 words
A PHOSPHOR COMPOSITION HAVING THE GENERAL FORMULATION U(SRO).W/2(LI2O).Y(GEO2):Z(TB OR EU) WHEREIN 0.16<=U/Y<=2.6, 0.1<=W/Y<=2, AND 0.04<=Z/Y<=0.2.
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) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |