Patents by Inventor Oliver T. W. Hsiao

Oliver T. W. Hsiao 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).

  • Paper clip
    Patent number: 4237587
    Abstract: A paper clip formed as an essentially unitary loop is made of resilient material and comprises an isosceles triangle base portion, a first clipping portion and a second clipping portion. The first clipping portion and the second clipping portion can clip positively the documents in different directions respectively.
    Type: Grant
    Filed: July 26, 1979
    Date of Patent: December 9, 1980
    Inventors: Oliver T. W. Hsiao, Thomas Tan