US2685530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing transparent luminescent screens
Assignee: General Electric Co
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Filing: 1952-08-01
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Granted: 1954-08-03
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Expires: 1972-08-01
Abstract
No abstract record available.
Inventors
- 👤 Dominic A Cusano
- 👤 Frank J Studer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:33
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/0805; C09K11/0811; H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/221
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
THE METHOD OF MAKING A TRANSPARENT LUMINESCENT SCREEN WHICH COMPRISES HEATIG A BASE OF TRNASPARENT VITREOUS MATERIAL TO A TEMPERATURE IN THE RANGE OF ABOUT 400 TO 600* C. AND INTRODUCING AND IN CONTACT WITH SAID HEATED MEMBER A DISPERSION OF THE FOLLOWING INGREDIENTS: (1) A MATERIAL SELECTED FROM THE CLASS CONSISTING OF ZINC, CADMIUM, ZINC SALT CADMIUM SALT, AND MIXTURES THEREOF (2) A LUMINESCENCE ACTIVATOR, AND (3) A MATERIAL SELECTED FROM THE CLASS CONSISTING OF HYDROGEN SULFIDE, HYDROGEN SELENIDE AND MIXTURES THEREOF WHEREBY CHEMICAL REACTION OCCURS AND A DESIRED TRANSPARENT SCREEN IS DEPOSITED ON SAID BASE MEMBER.
Claim 2
Independent Claim
98 words
THE METHOD OF MAKING A TRANSPARENT LUMINESCENT SCREEN WHICH COMPRISES HEATIG A BASE OF TRNASPARENT VITREOUS MATERIAL TO A TEMPERATURE IN THE RANGE OF ABOUT 400 TO 600* C. AND INTRODUCING AND IN CONTACT WITH SAID HEATED MEMBER A DISPERSION OF THE FOLLOWING INGREDIENTS: (1) A MATERIAL SELECTED FROM THE CLASS CONSISTING OF ZINC, CADMIUM, ZINC SALT CADMIUM SALT, AND MIXTURES THEREOF (2) A LUMINESCENCE ACTIVATOR, AND (3) A MATERIAL SELECTED FROM THE CLASS CONSISTING OF HYDROGEN SULFIDE, HYDROGEN SELENIDE AND MIXTURES THEREOF WHEREBY CHEMICAL REACTION OCCURS AND A DESIRED TRANSPARENT SCREEN IS DEPOSITED ON SAID BASE MEMBER.
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) | 1957-08-02 | 1958-02-01 | 1958-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-02 | 1962-02-01 | 1962-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-02 | 1966-02-01 | 1966-08-03 | $7700.00 | Window Closed / Lapsed |