US3906269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inert intermediate adhesive layer for a fluorescent substance in a fluorescent electronic tube
Assignee: Noritake Itron Corp
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Filing: 1970-07-21
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Granted: 1975-09-16
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Expires: 1990-07-21
Abstract
Abstract In a fluorescent electronic tube of the type wherein a layer of fluorescent substance is coated upon an anode electrode or an insulator and is excited to luminesce by electrons from a cathode electrode, there is provided an intermediate layer between the layer of fluorescent substance and the anode electrode or insulator. The intermediate layer is composed of a metallic conductor or a semiconductor material which is inert to the fluorescent substance and does not interfere with the flow of electrons.
Inventors
- 👤 Mikiharu Tanji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:25
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/15; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN A FLUORESCENT ELECTRONIC TUBE WHEREIN A LAYER OF FLUORESCENT SUBSTANCE COATED OVER A SUPPORTING MEMBER IS EXCITED TO LUMINESCE BY ELECTRONS SUPPLIED FROM A CATHODE ELECTRODE DISPOSED TO OPPOSE SAID SUPPORTING MEMBER, THE IMPROVEMENT WHICH COMPRISES AN INTERMEDIATE LAYER WHICH IS INTERPOSED BETWEEN SAID FLUORESCENT SUBSTANCE AND SAID SUPPORTING MEMBER, SAID INTERMEDIATE LAYER BEING COMPOSEDOF A MATERIAL WHICH IS INERT TO SAID FLUORESCENT SUBSTANCE, WHICH IS ADAPTED TO CONDUCT ELECTRONS SO AS NOT TO INTERFERE WITH THE FLOW OF ELECTRONS WHEN THE FLUORESCENT SUBSTANCE IS ENERGIZED TO FLUORESCE, AND WHICH COMPRISES A MIXTURE OF POWDERED CARBON AND WATER GLASS.
Claim 2
Dependent Claim
100 words
IN A FLUORESCENT ELECTRONIC TUBE WHEREIN A LAYER OF FLUORESCENT SUBSTANCE COATED OVER A SUPPORTING MEMBER IS EXCITED TO LUMINESCE BY ELECTRONS SUPPLIED FROM A CATHODE ELECTRODE DISPOSED TO OPPOSE SAID SUPPORTING MEMBER, THE IMPROVEMENT WHICH COMPRISES AN INTERMEDIATE LAYER WHICH IS INTERPOSED BETWEEN SAID FLUORESCENT SUBSTANCE AND SAID SUPPORTING MEMBER, SAID INTERMEDIATE LAYER BEING COMPOSEDOF A MATERIAL WHICH IS INERT TO SAID FLUORESCENT SUBSTANCE, WHICH IS ADAPTED TO CONDUCT ELECTRONS SO AS NOT TO INTERFERE WITH THE FLOW OF ELECTRONS WHEN THE FLUORESCENT SUBSTANCE IS ENERGIZED TO FLUORESCE, AND WHICH COMPRISES A MIXTURE OF POWDERED CARBON AND WATER GLASS.
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) | 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 |