Radio-opaque calcium phosphate glass
Patent 5162267 Issued on November 10, 1992. Estimated Expiration Date: 
September 27, 2011. 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.
September 27, 2011. 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 ReferencesBioabsorbable glass fibers for use in the reinforcement of bioabsorbable polymers for bone fixation devices and artificial ligaments Patent #: 4604097 InventorApplicationNo. 766783 filed on 09/27/1991US Classes:501/45, Phosphorus containing106/35DentalExaminersPrimary: Dixon, William R. Jr.Assistant: Gallo, Chris Attorney, Agent or FirmInternational ClassC03C 003/16AbstractA biocompatible, strong, radio-opaque high melting glass is obtained by reacting at the melt mono-basic calcium phosphate with phosphoric acid and a radio-opaque-imparting component such as bismuth oxide (Bi2 O3) or barium oxide (BaO). After soaking, cooling and drying, the glass may be ground to desired particle size, and is admirably suited for use as a filler, binder, or structural mass in the dental and medical fields. | |
