Dental composition
Patent 3997329 Issued on December 14, 1976. Estimated Expiration Date: 
December 14, 1993. 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.
December 14, 1993. 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 References 1963085 2281991 3305356 3841860 3871876 Tabletting spherical dental amalgam alloy Dental amalgam Patent #: 3954457 InventorsAssigneeApplicationNo. 644869 filed on 12/29/1975US Classes:75/255, Loose particulate mixture (i.e., composition) containing metal particles420/502, Copper containing420/527, Silver containing420/587Copper containingExaminersPrimary: Rutledge, L. DewayneAssistant: Weise, E. L. AbstractAn improved dental composition comprises a uniform admixture in specified proportions of two powdered alloys of specified structure and composition, which when amalgamated with mercury produces a corrosion-resistant dental amalgam having enhanced mechanical properties and handling characteristics. | |
