Chemistry: natural resins or derivatives; peptides or proteins; – Proteins from mammals or birds – Bones; tendons; teeth; cartilage
Reexamination Certificate
2007-07-10
2007-07-10
Afremova, Vera (Department: 1657)
Chemistry: natural resins or derivatives; peptides or proteins;
Proteins from mammals or birds
Bones; tendons; teeth; cartilage
C530S412000, C514S021800, C424S549000
Reexamination Certificate
active
10606190
ABSTRACT:
A method for purifying bone-derived osteogenic proteins including a demineralization process, a protein extraction process, a high molecular weight ultrafiltration process, a low molecular weight ultrafiltration process, and a recovery process. The high and low ultrafiltration processes preferably select proteins having a nominal molecular weight between approximately 8 kilodaltons and approximately 50 kilodaltons. Processes of the present invention may be used to recover osteogenic proteins from bone demineralization waste streams.
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Afremova Vera
Williams Morgan & Amerson P.C.
Zimmer Ortho Biologics, Inc.
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