Drug – bio-affecting and body treating compositions – Inorganic active ingredient containing – Phosphorus or phosphorus compound
Reexamination Certificate
2005-02-01
2005-02-01
Hartley, Michael G. (Department: 1616)
Drug, bio-affecting and body treating compositions
Inorganic active ingredient containing
Phosphorus or phosphorus compound
C106S690000, C106S691000, C423S299000, C423S304000, C423S305000, C423S306000, C424S490000, C424S493000, C424S494000, C424S495000, C424S601000, C424S606000, C514S769000, C514S772000, C514S781000, C514S951000, C514S952000
Reexamination Certificate
active
06849275
ABSTRACT:
A method for controlling the formation of a hydroxyapatite bone filler from dry calcium phosphate precursors in an aqueous solution uses coated sodium phosphate powder. The sodium phosphate powder is coated with a water soluble cellulose. Until the cellulose dissolves in the aqueous solution setting of the calcium phosphate cements proceeds slowly but when the exposed sodium phosphate particles start to solubilize in the aqueous solution the setting rate increases.
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Choi Frank
Hartley Michael G.
Howmedica Osteonics Corp.
Lerner David Littenberg Krumholz & Mentlik LLP
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