Canasite-apatite glass-ceramics
September 1, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesBiocompatible glass ceramic material Alkali metal, calcium fluorosilicate glass-ceramic articles Method of making alkali metal, calcium fluorosilicate glass-ceramic articles Opal glasses having an apatite opacifying phase High-strength glass-ceramic containing anorthite crystals and process for producing the same High-strength glass ceramic containing apatite crystals and a large quantity of wollastonite crystals and process for producing same Fluoride-containing Bioglass™ compositions Method for treating mineral material having organic carbon to facilitate recovery of gold and silver Patent #: 5536480 InventorAssigneeApplicationNo. 114759 filed on 09/01/1993US Classes:501/3, Halogen containing crystalline phase (e.g., fluormica, etc.)501/10, Nonsilica and nonsilicate crystalline phase (e.g., spinel, barium titanate, etc.)501/57FluorineExaminersPrimary: Bell, Mark L.Assistant: Jones, Deborah Attorney, Agent or FirmInternational ClassesC03C 010/16C03C 003/112 AbstractA glass-ceramic biomaterial having high strength and toughness, a family of glasses from which the glass-ceramic biomaterial can be produced, and a method of production. The material has a primary crystal phase of F-canasite and a secondary crystal phase of F-apatite. The glass family is SiO2 --CaO--Na2 O--K2 O--P2 O5 --F. The method may be a single stage heat treatment, or a two stage involving an initial nucleation and a subsequent crystallization. | |
