Patents by Inventor Yong Il Choi

Yong Il 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).

  • FLUOROALKYL GLYCERIN DERIVATIVE AND ITS USE AS SURFACTANT
    Publication number: 20230101416
    Abstract: The present disclosure discloses a fluoroalkyl glycerin derivative usable as an excellent surfactant by having functional groups and the number of carbon atoms controlled in the molecular structure, and its use as a surfactant. A fluoroalkyl glycerin derivative according to the present disclosure is used as a fluorine-based nonionic surfactant, and replaces existing fluoro compounds as well as having excellent surfactant properties compared to existing surfactants having a linear alkyl group.
    Type: Application
    Filed: May 31, 2022
    Publication date: March 30, 2023
    Applicant: MIYOUTECH CO., LTD.
    Inventors: Woong-Ku KANG, Seok-Heon OH, Soon-Dong KWON, Mi-Jung PARK, Hyun-Sun AHN, Yong-Il CHOI, Ji-Hwan JEON
  • BINAURAL HEARING AID WITH MULTI FUNCTIONS
    Publication number: 20180109887
    Abstract: The present invention relates to a binaural hearing aid with multiple functions in which multiple functions such as a wireless headset function, a measuring pulse function, a pulse information transmitting function, etc. in addition to a hearing aid function are implemented to improve user convenience.
    Type: Application
    Filed: October 18, 2016
    Publication date: April 19, 2018
    Applicant: Sorynorydotcom Inc.
    Inventor: Yong Il CHOI
  • Binaural hearing aid with multi functions
    Patent number: 9949044
    Abstract: The present invention relates to a binaural hearing aid with multiple functions in which multiple functions such as a wireless headset function, a measuring pulse function, a pulse information transmitting function, etc. in addition to a hearing aid function are implemented to improve user convenience.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: April 17, 2018
    Assignee: Sorynorydotcom Inc.
    Inventor: Yong Il Choi