Glass-ceramics, process for the their preparation and use
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United States of America Patent
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Sep 20, 2005
Grant Date -
Mar 11, 2004
app pub date -
Jul 18, 2001
filing date -
Jul 21, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Glass-ceramic consisting of: SiO2: -30-70 wt %; A12O3: 8-45 wt %; M2O:8-30 wt %; MO: 0-30 wt %; B2O3: 0-15 wt %; P2O5: 0-15 wt %; Zr2O: 0-12 wt %; TiO2: 0-12 wt %, wherein M is chosen in the group consisting of: Li, NA, K or mixture thereof; M′ is chosen in the group consisting of: Be, Mg, Ca, Ba, Sr, Zn, Pb or mixture thereof are described.
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