Antimicrobial hydroxyapatite powders and methods for preparing them
September 19, 2009. 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 3873327 3913229 Dental preparation containing materials having calcium and phosphate components Hydroxylapatite ceramic Process of preparing materials having calcium and phosphate components Process for preparing dicalcium phosphate dihydrate having a portion of the calcium displaced by divalent metal ion Process for producing an apatite powder having improved sinterability Pit and fissure sealant for teeth Phosphate of calcium ceramics Dentifrice compositions InventorsAssigneeApplicationNo. 409076 filed on 09/19/1989US Classes:424/618, Silver106/35, Dental423/308, Orthophosphate (e.g., calcium hydroxyapatite)424/57, Phosphate compound containing424/417, Coated particulate form (e.g., liposome, etc.)424/421, Inorganic particle424/422, Implant or insert424/423, Surgical implant or material424/489, Particulate form (e.g., powders, granules, beads, microcapsules, and pellets)424/491, Containing proteins and derivatives424/602, Calcium containing424/630, Copper424/641ZincExaminersPrimary: Rose, Shep K.Attorney, Agent or FirmInternational ClassesA61K 033/38A61K 033/30 A61K 033/34 Foreign Application Priority Data1988-09-29 JPAbstractAntimicrobial hydroxyapatite powders containing hydroxyapatite powder and metal ions selected from silver, copper and zinc ions or one or more antimicrobial agents selected from hinokitiol, tannin, lysozyme, protamine and sorbic acid.Field of SearchCoated particulate form (e.g., liposome, etc.)Inorganic particle Implant or insert Surgical implant or material Particulate form (e.g., powders, granules, beads, microcapsules, and pellets) Containing proteins and derivatives Copper Zinc Phosphate compound containing Calcium containing Silver Dental Orthophosphate (e.g., calcium hydroxyapatite) |
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