US2662830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Settling of fluorescent screens
Assignee: General Electric Co
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Filing: 1952-05-27
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Granted: 1953-12-15
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Expires: 1972-05-27
Abstract
No abstract record available.
Inventors
- 👤 Darlaston Arthur John Halstead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:01
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/221; H01J9/223
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
THE PROCESS OF SETTLING A PHOSPHOR COATING ONTO THE FACE OF A CATHODE RAY TUBE WHICH COMPRISES COVERING THE FACE OF SAID TUBE WITH A CUSHIONING LAYER COMPRISING A DILUTE SOLUTION OF A SOLUBLE BARIUM SALT SELECTED FROM THE GROUP CONSISTING OF BARIUM NITRATE AND BARIUM ACETATE, SAID SOLUTION CONTAINING FROM ABOUT 0.4 TO 0.6 GRAM OF SAID BARIUM SALT PER LITER OF SOLUTION AND THEREAFTER ADDING TO SAID CUSHIONING LAYER A SUSPENSION OF A PHOSPHOR IN A POTASSIUM SILICATE SOLUTION CONTAINING A SMALL AMOUNT OF CALCIUM METABORATE, THE AMOUNT OF CALCIUM METABORATE IN SAID SILICATE SOLUTION BEING SUCH THAT THE CONCENTRATION THEREOF IN THE TOTAL SETTLING MEDIUM INCLUDING THE SILICATE SOLUTION AND THE CUSHIONING LAYER IS FROM ABOUT 0.04 TO 0.06 GRAM PER LITER.
Claim 2
Dependent Claim
125 words
THE PROCESS OF SETTLING A PHOSPHOR COATING ONTO THE FACE OF A CATHODE RAY TUBE WHICH COMPRISES COVERING THE FACE OF SAID TUBE WITH A CUSHIONING LAYER COMPRISING A DILUTE SOLUTION OF A SOLUBLE BARIUM SALT SELECTED FROM THE GROUP CONSISTING OF BARIUM NITRATE AND BARIUM ACETATE, SAID SOLUTION CONTAINING FROM ABOUT 0.4 TO 0.6 GRAM OF SAID BARIUM SALT PER LITER OF SOLUTION AND THEREAFTER ADDING TO SAID CUSHIONING LAYER A SUSPENSION OF A PHOSPHOR IN A POTASSIUM SILICATE SOLUTION CONTAINING A SMALL AMOUNT OF CALCIUM METABORATE, THE AMOUNT OF CALCIUM METABORATE IN SAID SILICATE SOLUTION BEING SUCH THAT THE CONCENTRATION THEREOF IN THE TOTAL SETTLING MEDIUM INCLUDING THE SILICATE SOLUTION AND THE CUSHIONING LAYER IS FROM ABOUT 0.04 TO 0.06 GRAM PER LITER.
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) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |