Patent US2978417A successfully refreshed from Google Patents.
US2978417A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphors
Assignee: RCA Corp
•
Filing: 1958-04-25
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Granted: 1961-04-04
•
Expires: 1978-04-25
Abstract
No abstract record available.
Inventors
- 👤 Larach Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:54
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/0805; C09K11/0811
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
6 words
A PHOSPHOR HAVING THE MOLAR COMPOSITION
Claim 2
Dependent Claim
6 words
A PHOSPHOR HAVING THE MOLAR COMPOSITION
Claim 3
Dependent Claim
13 words
A PHOSPHOR CONSISTING ESSENTIALLY OF A SINGLE PHASE SOLID SOLUTION HAVING THE COMPOSITION
Claim 4
Dependent Claim
13 words
A PHOSPHOR CONSISTING ESSENTIALLY OF A SINGLE PHASE SOLID SOLUTION HAVING THE COMPOSITION
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
US2767049A
Cited
US2818391A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |