US2967111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing luminescent screens
Assignee: General Electric Co
•
Filing: 1957-02-25
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Granted: 1961-01-03
•
Expires: 1977-02-25
Abstract
No abstract record available.
Inventors
- 👤 Henry D Coghill
- 👤 Lewis R Koller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:10
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/221
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
THE METHOD OF PREPARING LUMINESCENT SCREENS WHICH METHOD COMPRISES VACUUM EVAPORATING A TRANSPARENT LAYER OF MANGANESE ACTIVATED PHOSPHOR COMPRISING A METAL SELECTED FROM THE GROUP CONSISTING OF ZINC, CADMIUM, AND MIXTURES THEREOF, AND A NON-METAL SELECTED
Claim 2
Independent Claim
36 words
THE METHOD OF PREPARING LUMINESCENT SCREENS WHICH METHOD COMPRISES VACUUM EVAPORATING A TRANSPARENT LAYER OF MANGANESE ACTIVATED PHOSPHOR COMPRISING A METAL SELECTED FROM THE GROUP CONSISTING OF ZINC, CADMIUM, AND MIXTURES THEREOF, AND A NON-METAL SELECTED
References Cited (Backward Citations)
US2732312A
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US2733163A
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US2398382A
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US2600579A
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US2685530A
Cited
US2698915A
Cited
US2757304A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-03 | 1964-07-04 | 1965-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-03 | 1968-07-04 | 1969-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-03 | 1972-07-04 | 1973-01-03 | $7700.00 | Window Closed / Lapsed |