Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Particulate form
Reexamination Certificate
2004-07-19
2011-12-13
Tran, S. (Department: 1615)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Particulate form
C424S490000
Reexamination Certificate
active
08075919
ABSTRACT:
The present invention is related to a method for preparing small spherical particles of an active agent by providing a solution in a single liquid phase. The single liquid phase comprises an active agent, a phase separation enhancing agent, and a first solvent. A phase change is induced at a controlled rate in the solution to cause a liquid-solid phase separation of the active agent and to form a solid phase and a liquid phase. The solid phase comprises solid small spherical particles of the active agent. The liquid phase comprises the phase separation enhancing agent and the solvent. The small spherical particles are substantially spherical and having a size from about 0.01 μm to about 200 μm.
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Report of the Inte
Brown Larry
McGeehan John K.
Rashba-Step Julia
Scott Terrence L.
Baxter Healthcare S.A.
Baxter International Inc.
Marshall & Gerstein & Borun LLP
Tran S.
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