Patents by Inventor Jong S. Woo

Jong S. Woo 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).

  • Patent number: 5603951
    Abstract: The present invention relates to a soft capsule composition containing a stable microemulsion concentrate which is more stable and suitable for the preparation of cyclosporin-containing soft capsules. More specifically, the present invention relates to a microemulsion concentrate containing cyclosporin as an active ingredient, dimethylisosorbide as a co-surfactant, one component or a mixture of two or more selected from the group consisting of an esterified compound of fatty acid and primary alcohol, medium chain fatty acid triglyceride and monoglyceride as an oil component, and a surfactant having HLB value of 10 to 17, such as Nikkol HCO-50 or Tween 20, which is suitable for formulation into soft capsules and to a soft capsule composition containing said microemulsion concentrate. In the microemulsion concentrate according to the present invention, cyclosporin, dimethylisosorbide, the oil component and the surfactant are present in the ratio of 1:11-5:1-5:3-6, preferably 1:3-4:1.
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: February 18, 1997
    Assignee: Hanmi Pharm. Ind. Co., Ltd.
    Inventor: Jong S. Woo
  • Patent number: 5589455
    Abstract: The present invention relates to a soft capsule composition containing a stable microemulsion concentrate which is more stable and suitable for the preparation of cyclosporin-containing soft capsules. More specifically, the present invention relates to a microemulsion concentrate containing cyclosporin as an active ingredient, polyethylene glycol as a cosurfactant, one component or a mixture of two or more selected from the group consisting of an esterified compound of fatty acid and primary alcohol, medium chain fatty acid triglyceride and monoglyceride as an oil component, and a surfactant having HLB value of 10 to 17 such as Nikkol HCO-50 or Tween 20, which is suitable for formulation into soft capsules and to a soft capsule composition containing said microemulsion concentrate. In the microemulsion concentrate according to the present invention, cyclosporin, polyethylene glycol, the oil component and the surfactant are present in the ratio of 1:0.1-10:1-10:1-10, preferably 1:0.5-8:2-6:2-8, by weight.
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: December 31, 1996
    Assignee: Hanmi Pharm. Ind. Co., Ltd.
    Inventor: Jong S. Woo