Patent US3143435A successfully refreshed from Google Patents.
US3143435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Round panel lamp phosphor coating
Assignee: General Electric Co
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Filing: 1962-01-05
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Granted: 1964-08-04
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Expires: 1982-01-05
Abstract
No abstract record available.
Inventors
- 👤 William C Martyny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:46
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/221; H01J9/223
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PROCESS FOR PHOSPHOR COATING A VITREOUS PLATE OF A ROUND FLUORESCENT PANEL LAMP HAVING CIRCULARLY EXTENDING CONCAVE DEPRESSIONS THEREIN SEPARATED BY CIRCULAR AND RADIAL RIDGES WHICH COMPRISES SUPPORTING THE PLATE CONCAVE SIDE UP, FLOWING A PHOSPHOR SUSPENSION OVER THE PLATE, SPINNIG THE PLATE TO THROW OFF THE MAJOR PART OF THE EXCESS PHOSPHOR SUSPENSION BY RADIAL FLOW, OVERTURNING THE PLATE, AND SPINNING IT AT REDUCED SPEED CON-
Claim 2
Dependent Claim
68 words
A PROCESS FOR PHOSPHOR COATING A VITREOUS PLATE OF A ROUND FLUORESCENT PANEL LAMP HAVING CIRCULARLY EXTENDING CONCAVE DEPRESSIONS THEREIN SEPARATED BY CIRCULAR AND RADIAL RIDGES WHICH COMPRISES SUPPORTING THE PLATE CONCAVE SIDE UP, FLOWING A PHOSPHOR SUSPENSION OVER THE PLATE, SPINNIG THE PLATE TO THROW OFF THE MAJOR PART OF THE EXCESS PHOSPHOR SUSPENSION BY RADIAL FLOW, OVERTURNING THE PLATE, AND SPINNING IT AT REDUCED SPEED CON-
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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) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |