| PATENT ASSIGNEE'S COUNTRY | Japan |
| UPDATE | 09.99 |
| PATENT ASSIGNEE | This data is not available for free |
| PATENT CLAIMS |
Mfg method - Obtaining glass material prepd by quenching molten mass of glass raw materials - Pressure molding at T > Tg but < MP & pressure < 20 MPa - Crystallization treat during pressure molding to produce crystallinity > 10% by vol. Wherein glass material is selected from which - At least one of CaO-MgO-2SiO2 (diopside); CaO-MgO-SiO2 (monticellite); 2CaO-MgO-2SiO2 (akermanite); 2(Mg,Ca)O- SiO2 (forsterite); beta-(Ca,Mg)O-SiO2 (wollastonite); Na2O Al2O3-2SiO2 (nephelite); Na2O-Al2O3-6SiO2 (albite); Na2O-Al2O3-4SiO2 (jadeite); MgO-TiO2, Al2O3-SiO2 (anda lusite); 3Al2O3-2SiO2 (mullite); CaO-Al2O3-2SiO2 (anorthite) 2CaO-Al2O3-SiO2 (gehelenite) & 3CaO-Al2O3-3SiO2 (gro ssularite) can precipitate out - Apatite cannot precipitate out |
| PATENT PHOTOCOPY | Available on request |
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