Patents by Inventor Bou-kun CHOI

Bou-kun 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).

  • Publication number: 20230143367
    Abstract: The present invention relates to an elastic makeup powder derived from natural inorganic particulates, and a method of preparing same, and more specifically, to an elastic natural makeup powder and a method of preparing same, the elastic natural makeup powder being characterized by comprising: natural inorganic particulates therein; and an elastic coating layer, which is dry-coated on the surface of the inorganic particulates and comprises (a) a triester of hydroxy fatty acids with glycerin, which his solid at room temperature, and a derivative thereof, or (b) a glyceryl fatty acid ester, which is solid at room temperature, and a derivative thereof. The elastic natural makeup powder of the present invention utilizes natural ingredients and thus, when applied to a cosmetic material, exhibits skin stability, is safe to the human body, exhibits excellent dispersibility, and can significantly improve the texture of the cosmetic material.
    Type: Application
    Filed: April 7, 2020
    Publication date: May 11, 2023
    Inventors: Sung Ho LEE, Yeong Gi KIM, Bou Kun CHOI
  • Publication number: 20120082708
    Abstract: The present invention relates to a method of preparing a composite powder comprising a surface treatment layer of sunscreen. The present invention prepares a composite powder comprising a surface treatment layer of sunscreen by a dry process that does not require separate dehydration and drying processes, and thus, the prepared composite powder may be uniformly surface-treated with more quantities of sunscreens compared to a composite powder comprising a surface treatment layer of sunscreen prepared by a conventional wet process, may exhibit remarkably improved sun screen effect, and be useful for a cosmetic composition.
    Type: Application
    Filed: September 21, 2011
    Publication date: April 5, 2012
    Applicant: SUNJIN CHEMICAL CO., LTD.
    Inventors: Sung-ho LEE, Jin-kwan PARK, Bou-kun CHOI, Dae-sung BAEG