Strengthening agent, strengthened metal halide particles, and improved lamp fill material
US5972442A · kind A · utility
4Cited by
6References
74Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1996 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Aug 23, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1314
- 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.