High-strength, translucent mica glass-ceramics
US6080692A · kind A · utility
20Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1998 |
| Grant date | Jun 27, 2000 |
| Priority date | — |
| Expiry date | Feb 18, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K6/833
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to a glass ceramic in which mica and ZrO.sub.2 are present in crystallized form, containing: PA0 K.sub.2 O: 0-9% by weight PA0 Na.sub.2 O: 0-9% by weight with the condition that Na.sub.2 O and K.sub.2 O together make up at least about 4% by weight, PA0 SiO.sub.2 : 35-60% by weight PA0 MgO: 10-25% by weight PA0 Al.sub.2 O.sub.3 : 7-30% by weight PA0 ZrO2: 4-12% by weight PA0 F.sup.- : 2-10% by weight which is essentially free of lithium, calcium, strontium and barium, to a process for its production and to its use as a tooth replacement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.