Patents by Inventor Jonghan Yhei

Jonghan Yhei 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).

  • Derivatives of cyclic compound and the use thereof
    Patent number: 8420853
    Abstract: Disclosed is tonovel cyclic derivatives having potent inhibiting effect on melanin formation and skin hyper-pigmentation activity with no adverse response to skin. They can be used as the therapeutics for treating and preventing the skin disease caused by over-reproduced melanin.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: April 16, 2013
    Assignees: Wonkisopharm Co., Ltd
    Inventors: Hyunchul Cho, Yonghyun Choi, Jonghan Yhei
  • Novel Derivatives of Cyclic Compound And The Use Thereof
    Publication number: 20100022461
    Abstract: Disclosed is tonovel cyclic derivatives having potent inhibiting effect on melanin formation and skin hyper-pigmentation activity with no adverse response to skin. They can be used as the therapeutics for treating and preventing the skin disease caused by over-reproduced melanin.
    Type: Application
    Filed: July 2, 2007
    Publication date: January 28, 2010
    Applicant: WONKISOPHARM CO., LTD.
    Inventors: Hyun Chul Cho, Yonghyun Choi, Jonghan Yhei