US3723339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminescent phosphor
Assignee: US Philips Corp
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Filing: 1970-04-20
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Granted: 1973-03-27
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Expires: 1990-04-20
Abstract
Abstract LUMINESCENT GALLATE ACTIVATD BY BIVALENT MAGANESE AND HAVING THE SPINEL CRYSTAL STRUCTURE, DEFINED BY THE FORMULA WHEREIN: X+Y+Z=1 O$A$1.0 O$X$0.96 O$Y$0.95 O$Z$1.00, WHEREIN 0.05$A$1.0 IF 0.90$Z$1.00 AND WHEREIN 0.75$1.10 0.002$B$0.06 P(MGXLI0C5YGA0.5YZNZO).GA2-A-AALAO3.BMNO
Inventors
- 👤 W Wanmaker
- 👤 J Verlijsdonk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:14
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/64; C09K11/62
Claims Analysis
Total Claims: 0
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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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |