Patents by Inventor Yong-Han Choi

Yong-Han Choi 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).

  • Method of solubilizing poorly soluble/insoluble active material through formation of oligomer composite
    Patent number: 9139703
    Abstract: Provided is a method of solubilizing a poorly soluble/insoluble active material through formation of an oligomer composite, in which a structure having a hydrophobic cavity structure is formed by using oligomers derived from two types of hydrophilic natural polymers and a poorly soluble/insoluble component is encapsulated in the cavity structure, and thus, self-aggregation of the poorly soluble/insoluble material is prevented and simultaneously, thermodynamic stability increases to effectively solubilize the poorly soluble/insoluble material.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: September 22, 2015
    Assignee: BIOGENICS, INC.
    Inventors: Chul-Hwan Kim, Seung-Hak Ko, Jae-Seong Shim, Eun-Kyoung Kwon, Yong-Han Choi
  • CAPSULE COMPOSITION CONTAINING UV-BLOCKING INORGANIC NANOPARTICLES AND POLYMER CAPABLE OF FORMING HYDROGEL AND PREPARATION METHOD THEREOF
    Publication number: 20150132348
    Abstract: A capsule composition containing UV-blocking inorganic nanoparticles, and a preparation method thereof, in which the UV-blocking inorganic nanoparticles are embedded in hydrophilic polymer capsules using a water-soluble dispersing agent, so that when the composition is applied to the skin, the polymer forms a thin hydrogel film that keeps the inorganic nanoparticles contained in the capsules to prevent the inorganic nanoparticles from penetrating the skin.
    Type: Application
    Filed: October 16, 2012
    Publication date: May 14, 2015
    Inventors: Tae-Hun Son, Chan-Jae Shin, Yong-Han Choi, Sung-Yoon Jeong, Tae-Sung Go
  • METHOD OF SOLUBILIZING POORLY SOLUBLE/INSOLUBLE ACTIVE MATERIAL THROUGH FORMATION OF OLIGOMER COMPOSITE
    Publication number: 20120219604
    Abstract: Provided is a method of solubilizing a poorly soluble/insoluble active material through formation of an oligomer composite, in which a structure having a hydrophobic cavity structure is formed by using oligomers derived from two types of hydrophilic natural polymers and a poorly soluble/insoluble component is encapsulated in the cavity structure, and thus, self-aggregation of the poorly soluble/insoluble material is prevented and simultaneously, thermodynamic stability increases to effectively solubilize the poorly soluble/insoluble material.
    Type: Application
    Filed: October 15, 2010
    Publication date: August 30, 2012
    Inventors: Chul-Hwan Kim, Seung-Hak Ko, Jae-Seong Shim, Eun-Kyoung Kwon, Yong-Han Choi