Electric lamp
US7888872B2 · kind B2 · utility
0Cited by
13References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2005 |
| Grant date | Feb 15, 2011 |
| Priority date | — |
| Expiry date | Jan 16, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01K1/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric lamp includes a quartz-glass envelope having at least one sealed end, a thin foil including molybdenum at least partly embedded within said sealed end, a first current conductor connected to the foil extending interiorly of the envelope, and a second current conductor connected to the foil and extending exteriorly of the envelope. The re-crystallized foil exhibits a yield strength (offset=0.2%) according to ASTM F 8M-91 below 300 MPa. This can be obtained by molybdenum doped with between 0.01 and 5 wt % of rhenium or 0.01 and 2 wt % of tungsten.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.