Composite materials for hard tissue replacement
Patent 5320844 Issued on June 14, 1994. Estimated Expiration Date: 
March 12, 2012. 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.
March 12, 2012. 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 ReferencesMethod of producing a bone substitute material Inductive collagen-based bone repair preparations Calcium phosphate materials In situ calcium phosphate minerals method Patent #: 5047031 InventorApplicationNo. 849880 filed on 03/12/1992US Classes:424/422, Implant or insert424/424, Membrane or diffusion barrier424/426, Errodable, resorbable, or dissolving424/602, Calcium containing523/115, Composition suitable for use as tooth or bone replacement, restorative, or implant523/116Cement or filling compositionExaminersPrimary: Page, Thurman K.Assistant: Kulkosky, Peter F. Attorney, Agent or FirmInternational ClassA61F 002/02AbstractHard tissue replacement materials and methods for making same are disclosed. In one embodiment, the present composition comprises a synthetically derived, substantially homogenous composite containing collagen component and calcium phosphate-containing component precipitated from a liquid medium in which the collagen component is contained. | |
