Patents by Inventor Dae Yang Cha

Dae Yang Cha 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).

  • Fine-beaded colestipol hydrochloride and pharmaceutically elegant dosage forms made therefrom
    Patent number: 5807582
    Abstract: The present invention provides for an improvement in the emulsion copolymerization process for the preparation of fine-beaded colestipol hydrochloride (FBCH) wherein the improvement comprises: 1) utilizing a weight ratio of water to polyethylenepolyamine in the process of 1.8 to 3.6 grams per gram, and 2) utilizing a weight ratio of surface active agent or surfactant to polyethylenepolyamine in the process of 1.0 to 3.0 grams per kilogram. The colestipol hydrochloride product thus produced is a novel fine-beaded form of a known pharmaceutical composition, yielding pharmaceutically elegant dosage forms exhibiting increased potency, including non-gritty oral powders and oral tablets. Conventional colestipol hydrochloride was heretofore available in large spherical granules which produced less elegant (gritty) oral suspensions.
    Type: Grant
    Filed: August 11, 1994
    Date of Patent: September 15, 1998
    Assignee: Pharmacia & Upjohn Company
    Inventor: Dae Yang Cha