Patent US3607771A successfully refreshed from Google Patents.
US3607771A
Expired / Lapsed
US
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Rare earth-activated silver and copper-sensitized zinc and cadmium sulfide phosphors
Assignee: General Electric Co
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Filing: 1968-12-06
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Granted: 1971-09-21
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Expires: 1988-12-06
Abstract
Abstract Phosphors exhibiting very narrow wavelength bands of highintensity emission are composed of a chalcogenide host and activated with a rare earth and a noble metal. Zinc sulfide activated with erbium and sensitized with silver is an example of the phosphors.
Inventors
- 👤 Jerome S Prener
- 👤 Jack D Kingsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:25
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C09K11/7701; C09K11/7702
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
24 words
The phosphor of claim 1 wherein silver and erbium are each present in an amount ranging from 10 6 to 10 2 mole fraction.
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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |