US3906285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminescent display tube anode assembly comprising anode segments each having a tungsten carbide conductive layer
Assignee: Nippon Electric Kagoshima Ltd
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Filing: 1974-05-08
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Granted: 1975-09-16
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Expires: 1994-05-08
Abstract
Abstract An anode assembly for a luminescent display tube comprises a substrate and a plurality of anode segments. The anode segments have layers of a luminescent material deposited in respective recesses formed in the substrate in conformity with the anode segments. A layer of tungsten carbide is disposed underlying each of the luminescent material layers.
Inventors
- 👤 Masaki Kobayakawa
- 👤 Kazufumi Yawata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:17
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
AN ANODE ASSEMBLY FOR ALUMINESCENT DISPLAY TUBE, SAID ASSEMBLY COMPRISING A SUBSTRATE AND A PLURALITY OF ANODE SEGMENTS HAVING LAYERS OF A LUMINESCENT MATERIAL DISPOSED IN RESPECTIVE RECESSES FORMED IN SAID SUBSTRATE IN CONFORMITY WITH A DESIRED CONFIGURATION OF SAID ANODE SEGMENTS, WHEREIN THE IMPROVEMENT COMPRISES A LAYER OF TUNGSTEN CARBIDE UNDERLYING EACH OF SAID LUMINESCENT MATERIAL LAYERS.
Claim 2
Dependent Claim
58 words
AN ANODE ASSEMBLY FOR ALUMINESCENT DISPLAY TUBE, SAID ASSEMBLY COMPRISING A SUBSTRATE AND A PLURALITY OF ANODE SEGMENTS HAVING LAYERS OF A LUMINESCENT MATERIAL DISPOSED IN RESPECTIVE RECESSES FORMED IN SAID SUBSTRATE IN CONFORMITY WITH A DESIRED CONFIGURATION OF SAID ANODE SEGMENTS, WHEREIN THE IMPROVEMENT COMPRISES A LAYER OF TUNGSTEN CARBIDE UNDERLYING EACH OF SAID LUMINESCENT MATERIAL LAYERS.
References Cited (Backward Citations)
US3504213A
Cited
US3737705A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |