US3016307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formation of phosphor films of reaction
Assignee: General Electric Co
•
Filing: 1959-03-13
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Granted: 1962-01-09
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Expires: 1979-03-13
Abstract
No abstract record available.
Inventors
- 👤 Lewis R Koller
- 👤 Henry D Coghill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:05
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/26; H01J29/187; H01J9/00; H01J9/20; H01J9/22; H01J9/221
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A METHOD OF PRODUCING A LUMINESCENT SCREEN COMPRISING THE STEPS OF HEATING A SCREEN SUBSTRATE IN AN EVACUATED ENCLOSURE, EVAPORATING A FLUORIDE PHOSPHOR SELECTED FROM THE GROUP CONSISTING OF ZINC FLOURIDE AND MAGNESIUM FLUORIDE IN THE REGION ADJACENT TO SAID SUBSTRATE, SAID EVAPORATED PHOSPHOR CONDENSING ON SAID SUBSTRATE, EVAPORATING IN SAID EVACUATED ENCLOSURE IN THE REGION OF SAID SUBSTRATE LESS THAN A STOICHIOMETRIC QUANTITY OF AN OXYGEN CONTAINING COMPOUND WHICH IS REACTIVE WITH SAID EVAPORATED PHOSPHOR TO FROM A LUMINESCENT OXYGEN CONTAINING PHOSPHOR SELECTED FROM THE GROUP CONSISTING OF PHOSPHATES, BORATES AND SILICATES TO FORM A MULTILAYER LUMINESCENT SCREEN HAVING SAID FLUORIDE PHOSPHOR AND A PHOSPHOR FORMED BY REACTION AS THE SEPARATE LAYERS THEREOF.
Claim 2
Independent Claim
114 words
A METHOD OF PRODUCING A LUMINESCENT SCREEN COMPRISING THE STEPS OF HEATING A SCREEN SUBSTRATE IN AN EVACUATED ENCLOSURE, EVAPORATING A FLUORIDE PHOSPHOR SELECTED FROM THE GROUP CONSISTING OF ZINC FLOURIDE AND MAGNESIUM FLUORIDE IN THE REGION ADJACENT TO SAID SUBSTRATE, SAID EVAPORATED PHOSPHOR CONDENSING ON SAID SUBSTRATE, EVAPORATING IN SAID EVACUATED ENCLOSURE IN THE REGION OF SAID SUBSTRATE LESS THAN A STOICHIOMETRIC QUANTITY OF AN OXYGEN CONTAINING COMPOUND WHICH IS REACTIVE WITH SAID EVAPORATED PHOSPHOR TO FROM A LUMINESCENT OXYGEN CONTAINING PHOSPHOR SELECTED FROM THE GROUP CONSISTING OF PHOSPHATES, BORATES AND SILICATES TO FORM A MULTILAYER LUMINESCENT SCREEN HAVING SAID FLUORIDE PHOSPHOR AND A PHOSPHOR FORMED BY REACTION AS THE SEPARATE LAYERS THEREOF.
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) | 1965-01-08 | 1965-07-10 | 1966-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-08 | 1969-07-10 | 1970-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-08 | 1973-07-10 | 1974-01-09 | $7700.00 | Window Closed / Lapsed |