Patents by Inventor Doo P. Hong

Doo P. Hong 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).

  • Automatically controlled dynamic absorber
    Patent number: 4935651
    Abstract: An automatically controlled dynamic vibration absorber in which the characteristic frequency of the vibration absorber is adjusted automatically to the frequency of vibration from a vibrating source to dissipate the vibration by mating a response vibration with a forced vibration.
    Type: Grant
    Filed: December 1, 1988
    Date of Patent: June 19, 1990
    Assignee: Hyundai Heavy Industries Co., Ltd.
    Inventors: Doo P. Hong, Yoon S. Ryu