Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Particulate form
Reexamination Certificate
2007-09-18
2007-09-18
Lukton, David (Department: 1654)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Particulate form
C514S002600, C516S077000
Reexamination Certificate
active
10398134
ABSTRACT:
A suspension of biocompatible particles based on a double-block hydrophilic neutral polyminoacid/hydrophobic neutral polyaminoacid copolymer and suitable for carrying active principles. The carrier particles can combine in colloidal suspension in a non-dissolved state with an active principle and release same, particularly in vivo, in prolonged and/or delayed delivery. The carrier particles may be derived from a powdery solid, and spontaneously form stable aqueous suspensions in the absence of surfactants or organic solvents. The invention also concerns the carrier particles in dry form, the method of preparing them, and pharmaceutical compositions (in dry form or suspension) which include the carrier particles associated with an active principle.
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Bryson Nathan
Soula Gerard
Flamel Technologies, Inc.
Lukton David
Patton & Boggs LLP
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