US2826510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming phosphor screens
Assignee: Tung Sol Electric Inc
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Filing: 1955-08-25
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Granted: 1958-03-11
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Expires: 1975-08-25
Abstract
No abstract record available.
Inventors
- 👤 Donald W Mayer
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
100 words
IN THE PROCESS OF FORMING A LUMINESCENT SCREEN ON A TUBE WALL WHEREIN LUMINESCENT MATERIAL IS DISPERSED IN WATER AND DISTRIBUTED TOGETHER WITH AN AQUEOUS SOLUTION OF A COLLOIDAL SILICATE OVER AN AQUEOUS BATH THROUGH WHICH THE MATERIAL SETTLES TO THE WALL TO FORM A LUMINESCENT SCREEN, THE IMPROVEMENT WHICH COMPRISES ADDING TO THE AQUEOUS BATH AN AQUEOUS SOLUTION OF A COAGULANT FOR THE COLLOIDAL SILICATE, THE COAGULANT COMPRISING AT LEAST IN PART A HYDROCHLORIDE THAT IS WATER SOLUBLE, THAT DOES NOT PRECIPITATE NOR CHANGE CHEMICALLY AT OR ABOVE A PH OF 8.5 AND THAT VOLATILIZES AT TEMPERATURE BELOW 350*C.
Claim 2
Dependent Claim
100 words
IN THE PROCESS OF FORMING A LUMINESCENT SCREEN ON A TUBE WALL WHEREIN LUMINESCENT MATERIAL IS DISPERSED IN WATER AND DISTRIBUTED TOGETHER WITH AN AQUEOUS SOLUTION OF A COLLOIDAL SILICATE OVER AN AQUEOUS BATH THROUGH WHICH THE MATERIAL SETTLES TO THE WALL TO FORM A LUMINESCENT SCREEN, THE IMPROVEMENT WHICH COMPRISES ADDING TO THE AQUEOUS BATH AN AQUEOUS SOLUTION OF A COAGULANT FOR THE COLLOIDAL SILICATE, THE COAGULANT COMPRISING AT LEAST IN PART A HYDROCHLORIDE THAT IS WATER SOLUBLE, THAT DOES NOT PRECIPITATE NOR CHANGE CHEMICALLY AT OR ABOVE A PH OF 8.5 AND THAT VOLATILIZES AT TEMPERATURE BELOW 350*C.
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) | 1961-03-10 | 1961-09-09 | 1962-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-10 | 1965-09-09 | 1966-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-10 | 1969-09-09 | 1970-03-11 | $7700.00 | Window Closed / Lapsed |