Patents by Inventor Yu-Hsun Hsuan

Yu-Hsun Hsuan 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).

  • Patent number: 6718641
    Abstract: A punching tool includes a punching device, and a plier device coupled to the punching device for actuating the punching device with less force. The punching device includes a base detachably secured to one of the jaws with such as a channel-and-flange engagement, and includes a punching member movable relative to the base and operatable by the other jaw which may force the punching member relative to the base. A spring may bias the punching member away from the sheet materials to be cut. A cover is engaged with the punching member and attached to one of the jaws for detachably securing the punching member to that jaw.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: April 13, 2004
    Inventor: Yu Hsun Hsuan
  • Publication number: 20020124420
    Abstract: A punching tool includes a punching device, and a plier device coupled to the punching device for actuating the punching device with less force. The punching device includes a base detachably secured to one of the jaws with such as a channel-and-flange engagement, and includes a punching member movable relative to the base and operatable by the other jaw which may force the punching member relative to the base. A spring may bias the punching member away from the sheet materials to be cut.
    Type: Application
    Filed: March 9, 2001
    Publication date: September 12, 2002
    Inventor: Yu Hsun Hsuan
  • Patent number: D446816
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: August 21, 2001
    Inventor: Yu-Hsun Hsuan
  • Patent number: D458308
    Type: Grant
    Filed: November 8, 2000
    Date of Patent: June 4, 2002
    Inventor: Yu Hsun Hsuan