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Patent Application
App. No. 13/874,424

Technology for the Preparation of Microparticles

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Quick Facts
Patent No.
US None
App. No.
13/874,424
Abstract

Microspheres are produced by contacting a solution of a macromolecule or small molecule in a solvent with an antisolvent and a counterion, and chilling the solution. The microspheres are useful for preparing pharmaceuticals, nutraceuticals, cosmetic products and the like of defined dimensions.

Claims (5)

1 . A method of making microparticles of a compound, comprising:

a) adding a counterion to a solution containing the compound in a solvent;

b) adding an antisolvent to the solution; and

c) gradually cooling the solution to a temperature below about 25° C.,

whereby a composition containing microparticles comprising the compound is formed, wherein steps a), b) and c) are performed simultaneously, sequentially, intermittently, or in any order.

Assignments (2)
CHANGE OF NAME Recorded Jun 14, 2013
From: NEXBIO, INCORPORATED
To: ANSUN BIOPHARMA, INC.
Reel/Frame 030617/0182 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 3, 2013
From: MALAKHOV, MICHAEL P.; FANG, FANG
To: NEXBIO, INC.
Reel/Frame 030534/0681 →