Patents by Inventor Yuanxi Qin

Yuanxi Qin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Methods for fabrication, uses and compositions of small spherical particles of insulin prepared by controlled phase separation
    Publication number: 20050233945
    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 ?m to about 200 ?m.
    Type: Application
    Filed: July 19, 2004
    Publication date: October 20, 2005
    Inventors: Larry Brown, John McGeehan, Yuanxi Qin, Julia Rashba-Step, Terrence Scott