Patents by Inventor Oscar C. Yeh

Oscar C. Yeh 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).

  • Textured seal for reduced wear
    Patent number: 7284758
    Abstract: The present invention relates to seals having textured features. The present invention particularly relates to seals having contact surfaces with said features wherein the contact surface seals properly and is resistant to wear. The contact surface is able to perform in very severe environments, such as those found in earthmoving applications.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: October 23, 2007
    Assignee: Massachusetts Institute of Technology
    Inventors: Douglas P. Hart, Mary C. Boyce, Hugo M. Ayala, Oscar C. Yeh
  • Textured seal for reduced wear
    Patent number: 6105968
    Abstract: A contact surface of a seal having textured features is described. The contact surface seals properly and is resistant to wear. The contact surface is able to perform in very severe environments, such as those found in earthmoving applications.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: August 22, 2000
    Assignee: Massachusetts Institute of Technology
    Inventors: Oscar C. Yeh, Douglas P. Hart, Mary C. Boyce, Hugo A. Ayala