US2763567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming an input screen
Assignee: Westinghouse Electric Corp
•
Filing: 1952-07-23
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Granted: 1956-09-18
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Expires: 1972-07-23
Abstract
No abstract record available.
Inventors
- 👤 Nagy Rudolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:04
CPC Classifications
G; G21; G21K; G21K4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE METHOD OF FORMING A PICTURE SCREEN TO BE USED IN AN ENVIROMENT CONTAINING CESIUM VAPOR WHICH COMPRISES THE STEPS OF EXPOSING ONE SURFACE OF A GLASS MEMBER CONTAINING MATERIAL WHICH AFFECTS PHOSPHOR MATERIAL ADVERSELY TO A DILUTE SOLUTION OF HYDROFLUORIC ACID, WASHING THE TREATED SURFACE WITH HYDROCHLORIC ACID AND WATER, SETTLING FINE PARTICLES OF A PHOSPHOR ON SAID SURFACE FROM A LIQUID SUSPENSION THEREOF, COATING THE RESULTING SURFACE WITH A LAYER OF MATERIAL SELECTED FROM THE GROUP WHICH CONSISTS OF GERMANIUM DIOXIDE, ZINC SULPHIDE, LITHIUM FLUORIDE AND CALCIUM FLUORIDE AND COATING SAID LAYER WITH TIN OXIDE.
Claim 2
Independent Claim
97 words
THE METHOD OF FORMING A PICTURE SCREEN TO BE USED IN AN ENVIROMENT CONTAINING CESIUM VAPOR WHICH COMPRISES THE STEPS OF EXPOSING ONE SURFACE OF A GLASS MEMBER CONTAINING MATERIAL WHICH AFFECTS PHOSPHOR MATERIAL ADVERSELY TO A DILUTE SOLUTION OF HYDROFLUORIC ACID, WASHING THE TREATED SURFACE WITH HYDROCHLORIC ACID AND WATER, SETTLING FINE PARTICLES OF A PHOSPHOR ON SAID SURFACE FROM A LIQUID SUSPENSION THEREOF, COATING THE RESULTING SURFACE WITH A LAYER OF MATERIAL SELECTED FROM THE GROUP WHICH CONSISTS OF GERMANIUM DIOXIDE, ZINC SULPHIDE, LITHIUM FLUORIDE AND CALCIUM FLUORIDE AND COATING SAID LAYER WITH TIN OXIDE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |