Patents by Inventor Howard Y. Yoon

Howard Y. Yoon 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).

  • Double-wall tube heat exchanger
    Patent number: 4744412
    Abstract: A heat exchanger utilizes a double walled heat transfer tube wherein the inner tube has a knurled external surface engaging the inner surface of an outer tube to provide multiple interconnected leak paths. The inner and outer tubes are attached to inner and outer tube sheets by roller expansion.
    Type: Grant
    Filed: October 1, 1986
    Date of Patent: May 17, 1988
    Assignee: ITT Corporation
    Inventors: Sung C. Kim, Marvin P. Schwartz, Howard Y. Yoon