US2614082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zinc sulfide type phosphors containing magnesium sulfide
Assignee: RCA Corp
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Filing: 1949-11-30
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Granted: 1952-10-14
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Expires: 1969-11-30
Abstract
No abstract record available.
Inventors
- 👤 Arthur L J Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:12
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/74; C09K11/7407; C09K11/7414
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A PHOSPHOR COMPRISING 99.5 TO ABOUT 70 MOL PER CENT ZINC-CADMIUM SULFIDE CONSISTING ESSENTIALLY OF FROM 99.5 TO 50 MOL PER CENT ZINC SULFIDE AND 0.5 TO ABOUT 50 MOL PER CENT CADMIUM SULFIDE, AND FROM 0.5 TO ABOUT 30 MOL PER CENT MAGNESIUM SULFIDE IN SOLID SOLUTION IN THE ZINC-CADMIUM SULFIDE AND INCLUDING AN ACTIVATOR SELECTED FROM THE CLASS CONSISTING OF COPPER IN AN AMOUNT OF 0.002 TO 0.02 PER CENT BY WEIGHT, SILVER IN AN AMOUNT OF 0.0005 TO 0.02 PER CENT BY WEIGHT, GOLD IN AN AMOUNT OF 0.0005 TO 0.02 PER CENT BY WEIGHT, MANGANESE IN AN AMOUNT OF 0.001 TO 1.0 PER CENT
Claim 2
Dependent Claim
108 words
A PHOSPHOR COMPRISING 99.5 TO ABOUT 70 MOL PER CENT ZINC-CADMIUM SULFIDE CONSISTING ESSENTIALLY OF FROM 99.5 TO 50 MOL PER CENT ZINC SULFIDE AND 0.5 TO ABOUT 50 MOL PER CENT CADMIUM SULFIDE, AND FROM 0.5 TO ABOUT 30 MOL PER CENT MAGNESIUM SULFIDE IN SOLID SOLUTION IN THE ZINC-CADMIUM SULFIDE AND INCLUDING AN ACTIVATOR SELECTED FROM THE CLASS CONSISTING OF COPPER IN AN AMOUNT OF 0.002 TO 0.02 PER CENT BY WEIGHT, SILVER IN AN AMOUNT OF 0.0005 TO 0.02 PER CENT BY WEIGHT, GOLD IN AN AMOUNT OF 0.0005 TO 0.02 PER CENT BY WEIGHT, MANGANESE IN AN AMOUNT OF 0.001 TO 1.0 PER CENT
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) | 1955-10-14 | 1956-04-14 | 1956-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-14 | 1960-04-14 | 1960-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-14 | 1964-04-14 | 1964-10-14 | $7700.00 | Window Closed / Lapsed |