Patents by Inventor Derek S. Y. Tam

Derek S. Y. Tam 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).

  • Pen holder
    Patent number: 5259095
    Abstract: A holder is disclosed which comprises a body having a cavity with an opening for receiving an object to be held, for example a pen, a spring member is disposed in the cavity and the spring member is deformable by the object inserted into the cavity to hold the object against the wall of the cavity.
    Type: Grant
    Filed: October 9, 1992
    Date of Patent: November 9, 1993
    Inventor: Derek S. Y. Tam