US3148300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamp having envelope of glass opaque to ultraviolet radiation
Assignee: General Electric Co
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Filing: 1961-08-04
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Granted: 1964-09-08
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Expires: 1981-08-04
Abstract
No abstract record available.
Inventors
- 👤 William A Graff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:58
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/095; C03C3/062; C03C3/064; C03C3/068; C03C3/102; C03C3/105; C03C4/00; C03C4/08; C03C4/085; H; H01; H01J; H01J61/00; H01J61/02; H01J61/30; H01J61/302
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
AN ELECTRIC DISCHARGE LAMP HAVING A LIGHT SOURCE EMISSIVE OF VISIBLE AND ULTRAVIOLET RADIATIONS INCLUDING RADIATIONS OF APPROXIMATELY 3650 A. WAVE LENGTH AND A GLASS WALL ASSOCIATED WITH SAID SOURCE IN RADIATION RECEIVING AND PROTECTIVE RELATION THERETO, SAID WALL AT LEAST IN PART BEING OF GLASS FROM THE GROUP CONSITING OF SODALIME GLASS AND LEAD GLASS HIGHLY TRANSMISSIVE OF VISIBLE LIGHT AND CONTAINING BY WEIGHT OF THE GLASS CONSTITUTING SAID WALL PART APPROXIMATELY 0.70 TO 1.38 PERCENT, INCLUSIVE, MIXED CERIUM, TITANIUM AND VANADIUM OXIDES TO REDUCE SUBSTANTIALLY THE TRANSMISSION OF ULTRAVIOLET RADIATIONS OF ABOUT 3650 A. WAVE LENGTH.
Claim 2
Dependent Claim
98 words
AN ELECTRIC DISCHARGE LAMP HAVING A LIGHT SOURCE EMISSIVE OF VISIBLE AND ULTRAVIOLET RADIATIONS INCLUDING RADIATIONS OF APPROXIMATELY 3650 A. WAVE LENGTH AND A GLASS WALL ASSOCIATED WITH SAID SOURCE IN RADIATION RECEIVING AND PROTECTIVE RELATION THERETO, SAID WALL AT LEAST IN PART BEING OF GLASS FROM THE GROUP CONSITING OF SODALIME GLASS AND LEAD GLASS HIGHLY TRANSMISSIVE OF VISIBLE LIGHT AND CONTAINING BY WEIGHT OF THE GLASS CONSTITUTING SAID WALL PART APPROXIMATELY 0.70 TO 1.38 PERCENT, INCLUSIVE, MIXED CERIUM, TITANIUM AND VANADIUM OXIDES TO REDUCE SUBSTANTIALLY THE TRANSMISSION OF ULTRAVIOLET RADIATIONS OF ABOUT 3650 A. WAVE LENGTH.
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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |