US2944916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing of image display devices
Assignee: GTE Sylvania Inc
•
Filing: 1957-09-26
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Granted: 1960-07-12
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Expires: 1977-09-26
Abstract
No abstract record available.
Inventors
- 👤 Lyle W Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:30
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A PROCESS FOR FORMING AN IMAGE DISPLAY SCREEN ON THE VIEWING PANEL OF A CATHODE RAY TUBE COMPRISING THE STEPS OF FABRICATING A SCREEN LAYER INCLUDING APHOSPHOR MATERIAL AND A SILICATE ON THE PANEL, COVERING SAID SCREEN LAYER WITH A FILM OF LACQUER, AND ISSUING CARBON DIOXIDE GAS INTO SAID TUBE TO CAUSE PENETRATION OF SAID GAS INTO THE LACQUER COVERED SCREEN LAYER.
Claim 2
Dependent Claim
63 words
A PROCESS FOR FORMING AN IMAGE DISPLAY SCREEN ON THE VIEWING PANEL OF A CATHODE RAY TUBE COMPRISING THE STEPS OF FABRICATING A SCREEN LAYER INCLUDING APHOSPHOR MATERIAL AND A SILICATE ON THE PANEL, COVERING SAID SCREEN LAYER WITH A FILM OF LACQUER, AND ISSUING CARBON DIOXIDE GAS INTO SAID TUBE TO CAUSE PENETRATION OF SAID GAS INTO THE LACQUER COVERED SCREEN LAYER.
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) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |