Methods of strengthening metal halide particles, and improved lamp fill material
US6284165A · kind A · utility
1Cited by
2References
27Claims
0Family size
Inventors
Key dates
| Filing date | Nov 5, 1999 |
| Grant date | Sep 4, 2001 |
| Priority date | — |
| Expiry date | Nov 5, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/125
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Particle compositions are described comprising certain metal halides in combination with a strengthening agent. The addition of the strengthening agent to a metal halide particle increases the particle's strength thereby reducing breakage on impact and during handling. When used as a vaporizable metal halide fill in discharge lamps, the particle strength is increased without significantly altering the spectral and electrical characteristics of the lamp. Methods of making the particles and arc tube containing the particles are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.