Patent US3039972A successfully refreshed from Google Patents.
US3039972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent phosphor
Assignee: Westinghouse Electric Corp
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Filing: 1961-01-11
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Granted: 1962-06-19
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Expires: 1981-01-11
Abstract
No abstract record available.
Inventors
- 👤 Wachtel Anselm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:45
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/14; H05B33/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
AN ELECTROLUMINESCENT PHOSPHOR HAVING AS A BASIC MATRIX GROUP IIB METAL SULFIDE SELECTED FROM ONE OF THE GROUP CONSISTING OF ZONC-MERCURIC SULFIDE AND ZINC-CADMIUM-MERCURIC SULFIDE, SAID PHOSPHOR INCLUDING COPPER AS ACTIVATOR, AN ATOM RATIO OF ZINC TO MERCURY IN SAID PHOSPHOR OF FROM 100:1 TO 3:1 AN ATOM RATIO OF CADMIUM TO MERCURY IN SAID PHOSPHOR LESS THAN 1.5:1 AND COPPER HAVING BEEN INCLUDED IN THE RAW MIX FOR SAID PHOSPHOR IN COMPOUND FROM IN AMOUNT OF FROM 0.00075 TO 0.035 GRAM ATOM OF COPPER PER GRAM MOLE OF SAID GROUP IIB METAL SULFIDE.
Claim 2
Dependent Claim
94 words
AN ELECTROLUMINESCENT PHOSPHOR HAVING AS A BASIC MATRIX GROUP IIB METAL SULFIDE SELECTED FROM ONE OF THE GROUP CONSISTING OF ZONC-MERCURIC SULFIDE AND ZINC-CADMIUM-MERCURIC SULFIDE, SAID PHOSPHOR INCLUDING COPPER AS ACTIVATOR, AN ATOM RATIO OF ZINC TO MERCURY IN SAID PHOSPHOR OF FROM 100:1 TO 3:1 AN ATOM RATIO OF CADMIUM TO MERCURY IN SAID PHOSPHOR LESS THAN 1.5:1 AND COPPER HAVING BEEN INCLUDED IN THE RAW MIX FOR SAID PHOSPHOR IN COMPOUND FROM IN AMOUNT OF FROM 0.00075 TO 0.035 GRAM ATOM OF COPPER PER GRAM MOLE OF SAID GROUP IIB METAL SULFIDE.
References Cited (Backward Citations)
US2222668A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |