Patents by Inventor Jae-Keun Choi

Jae-Keun 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: 20240247780
    Abstract: The present invention provides a light source apparatus and method for integrating diffused light with high efficiency using a collimating including an axicon lens, collimating it, tuning the wavelength of desired light, and passing it.
    Type: Application
    Filed: January 24, 2023
    Publication date: July 25, 2024
    Applicant: IISM INC.
    Inventors: IL SEUNG YANG, YUN MI BAE, YU SIC KIM, SUNG YUN CHO, KWAN KYU LEE, JAE KEUN CHOI, YOUN JIN KIM, CHANG HYUN BAE, SUNG DONG KIM, JONG MIN PARK, YUN JI LEE, SE MIN PARK, HUENG KHON KIM
  • Patent number: 6190690
    Abstract: A sustained/immediate acting ketoprofen patch. A moisture permeable backing, a moisture non-permeable primer, a moisture high-permeable drug layer containing ketoprofen and a skin adhesion layer controlling release of a drug solution are piled up. An ethyl acetate soluble acrylic/rubber adhesive is coated onto a silicon coated paper, dried and transfer coated onto the backing to form the primer. The drug layer is formed by coating a drug solution onto a silicon coated paper, drying and transfer coating onto the primer. The skin adhesion layer is formed by coating a mixture of a solution prepared by dissolving an emulsifier in ethyl acetate and acrylic adhesive, drying and transfer coating onto the drug layer. The ketoprofen patch has a drug release controlling function and a good adhesion strength. The drug transferring effect through the skin is good.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: February 20, 2001
    Assignee: STC Corporation
    Inventors: Chang-Kyu Park, Jae-Keun Choi, Kwang-Ho Lee, Byong-Chul Hyun, Yi-Dan Ha