Glass ceramic having a low thermal expansion
US7220690B2 · kind B2 · utility
15Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2005 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Apr 11, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21K2201/067
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to a novel glass ceramic having a low or small average thermal expansion together with good polishability and processability, to the use of the glass ceramic according to the invention, and to optical components made of the glass ceramic. In particular, a glass ceramic is provided which comprises the following composition (in % by weight based on oxide):
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.