US2862131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass for glow discharge lamps such as fluorescent luminescent lamps and the like
Assignee: Compagnie de Saint Gobain SA
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Filing: 1954-03-15
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Granted: 1958-11-25
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Expires: 1974-03-15
Abstract
No abstract record available.
Inventors
- 👤 Escher-Desrivieres Jean Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:40
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/38; H01J61/40; C; C09; C09K; C09K11/00; C09K11/02; C09K11/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A GLOW DISCHARGE LAMP HAVING A LIGHT SOURCE WHICH EMITS RAYS ABOVE AND BELOW 3,200 A., AND A GLASS WALL ASSOCIATED WITH SAID SOURCE IN PROTECTIVE RELATION THERETO, SAID WALL BEING OF THE COMPOSITION OF AN ORDINARY SODALIME GLASS AND ALSO CONTAINING ON THE ORDER .15%-1% BY WEIGHT OF AT LEAST ONE OF GROUP OF OXIDES CONSISTING OF CERIUM OXIDE AND VANADIUM OXIDE.
Claim 2
Dependent Claim
63 words
A GLOW DISCHARGE LAMP HAVING A LIGHT SOURCE WHICH EMITS RAYS ABOVE AND BELOW 3,200 A., AND A GLASS WALL ASSOCIATED WITH SAID SOURCE IN PROTECTIVE RELATION THERETO, SAID WALL BEING OF THE COMPOSITION OF AN ORDINARY SODALIME GLASS AND ALSO CONTAINING ON THE ORDER .15%-1% BY WEIGHT OF AT LEAST ONE OF GROUP OF OXIDES CONSISTING OF CERIUM OXIDE AND VANADIUM OXIDE.
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) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |