US3105867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal foil lead-in conductor for electric lamp
Assignee: US Philips Corp
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Filing: 1960-09-08
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Granted: 1963-10-01
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Expires: 1980-09-08
Abstract
No abstract record available.
Inventors
- 👤 Riksterus Auguste Johannes Meijer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:32
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/04; C03C27/042; C03C27/046; H; H01; H01J; H01J5/00; H01J5/32; H01J5/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A LEAD-IN CONDUCTOR FOR AN ELECTRIC LAMP COMPRISING A FOIL SEALED IN A QUARTZ-LIKE MATERIAL, SAID FOIL HAVING A THICKNESS GREATER IN ITS MID-SECTION THAN AT ITS EDGES, SAID FOIL COMPRISING A CORE OF REFRACTORY METAL, AN OXIDATION-PROTECTIVE OUTER LAYER SURROUNDING SAID CORE, AND A LAYER INTERMEDIATE THE OUTER LAYER AND THE CORE CONSISTING OF A METAL WHICH IS CAPABLE OF FORMING AN ALLOY WITH THE CORE METAL AND WHICH IS CAPABLE OF FORMING A PROTECTIVE OXIDE, SAID CORE HAVING A THICKNESS AT ITS MID-SECTION OF BETWEEN 15 AND 70 MICRONS, THE OUTER LAYER HAVING A THICKNESS OF ABOUT 0.5 TO 4 MICRONS, AND THE INTERMEDIATE LAYER HAVING A THICKNESS OF ABOUT 1 TO 8 MICRONS, SAID OUTER LAYER HAVING A MELTING POINT WHICH IS LOWER THAN THE SOFTENING TEMPERATURE OF THE QUARTZ-LIKE MATERIAL.
Claim 2
Dependent Claim
134 words
A LEAD-IN CONDUCTOR FOR AN ELECTRIC LAMP COMPRISING A FOIL SEALED IN A QUARTZ-LIKE MATERIAL, SAID FOIL HAVING A THICKNESS GREATER IN ITS MID-SECTION THAN AT ITS EDGES, SAID FOIL COMPRISING A CORE OF REFRACTORY METAL, AN OXIDATION-PROTECTIVE OUTER LAYER SURROUNDING SAID CORE, AND A LAYER INTERMEDIATE THE OUTER LAYER AND THE CORE CONSISTING OF A METAL WHICH IS CAPABLE OF FORMING AN ALLOY WITH THE CORE METAL AND WHICH IS CAPABLE OF FORMING A PROTECTIVE OXIDE, SAID CORE HAVING A THICKNESS AT ITS MID-SECTION OF BETWEEN 15 AND 70 MICRONS, THE OUTER LAYER HAVING A THICKNESS OF ABOUT 0.5 TO 4 MICRONS, AND THE INTERMEDIATE LAYER HAVING A THICKNESS OF ABOUT 1 TO 8 MICRONS, SAID OUTER LAYER HAVING A MELTING POINT WHICH IS LOWER THAN THE SOFTENING TEMPERATURE OF THE QUARTZ-LIKE MATERIAL.
References Cited (Backward Citations)
US2876377A
Cited
US2966607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-30 | 1967-04-01 | 1967-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-30 | 1971-04-01 | 1971-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-30 | 1975-04-01 | 1975-10-01 | $7700.00 | Window Closed / Lapsed |