Light filament formed from carbon nanotubes
US7321188B2 · kind B2 · utility
11Cited by
10References
7Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 21, 2005 |
| Grant date | Jan 22, 2008 |
| Priority date | — |
| Expiry date | Jan 31, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/95
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light filament (206) formed from carbon nanotubes is characterized by high mechanical strength and durability at elevated temperatures, a high surface area to volume ratio, and high emissivity. Additionally, electrical resistance of the light filament does not increase with increasing temperature as much as electrical resistance of conventional metallic light filaments. Accordingly, power consumption of the light filament is low at incandescent operating temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.