Patent US3094642A successfully refreshed from Google Patents.
US3094642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated lamp
Assignee: GTE Sylvania Inc
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Filing: 1960-06-17
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Granted: 1963-06-18
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Expires: 1980-06-17
Abstract
No abstract record available.
Inventors
- 👤 Leo E Duval
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:31
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/28; H01K1/32
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
123 words
AN INCANDESCENT LAMP HAVING AN ENVELOPE PREPARED OF A GLASS SELECTED FROM THE GROUP CONSISTING OF QUARTZ AND ONE HAVING GREATER THAN ABOUT 96% FUSED SILICA, SAID ENVELOPE BEING SEALED FROM THE ATMOSPHERE AT ITS ENDS, LEAD-IN CONDUCTORS SEALED IN EACH OF SAID ENDS, A TUNGSTEN FILAMENT POSITIONED IN SAID ENVELOPE AND CONNECTED AT ITS RESPECTIVE ENDS TO THE LEAD-IN CONDUCTORS, A FILLING OF AN INERT GAS AND A QUANTITY OF IODINE IN SAID ENVELOPE, SAID IODINE BEING IN QUANTITIES LESS THAN THAT WHICH RESULTS IN APPRECIABLE ADSORPTION OF LIGHT, BUT SUFFICIENT TO EFFECT A REGENERATION GETTER ACTON, AND AN EVANESCENT BARRIER LAYER OF AN ORGANIC COMPOUND CONSISTING OF CARBON, HYDROGEN AND OXYGEN ON SAID GLASS, WHEREBY DEVITRIFICATION OF THE GLASS IS INHIBITED.
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) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |