Patent US3278326A successfully refreshed from Google Patents.
US3278326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating fluorescent layer of electron discharge tube
Assignee: National Research Development Corp UK
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Filing: 1965-07-07
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Granted: 1966-10-11
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Expires: 1985-07-07
Abstract
No abstract record available.
Inventors
- 👤 Mcgee James Dwyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:26
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A METHOD OF PROVIDING ELECTRON-PERMEABLE BACKING LAYERS FOR A CRYSTALLINE FLUORESCENT LAYER DISPOSED ON A TRANSPARENT CARRIER IN AN ELECTRON DISCHARGE TUBE, SAID METHOD COMPRISING THE STEPS OF EVAPORATING A METALLIC MATERIAL FROM A PLURALITY OF SPACED SOURCES DISPOSED AT A SMALL ANGLE TO THE FLUORESCENT LAYER SURFACE TO FORM A DISCONTINUOUS, HIGH LIGHT-REFLECTING, FIRST BACKING LAYER
Claim 2
Independent Claim
57 words
A METHOD OF PROVIDING ELECTRON-PERMEABLE BACKING LAYERS FOR A CRYSTALLINE FLUORESCENT LAYER DISPOSED ON A TRANSPARENT CARRIER IN AN ELECTRON DISCHARGE TUBE, SAID METHOD COMPRISING THE STEPS OF EVAPORATING A METALLIC MATERIAL FROM A PLURALITY OF SPACED SOURCES DISPOSED AT A SMALL ANGLE TO THE FLUORESCENT LAYER SURFACE TO FORM A DISCONTINUOUS, HIGH LIGHT-REFLECTING, FIRST BACKING 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) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |