Patents by Inventor Pi-Chin Chen

Pi-Chin Chen 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).

  • BLADE OF A CEILING FAN
    Publication number: 20020076329
    Abstract: A blade for a ceiling fan includes at least one raised portion formed on the surface of the blade with a chamber in the raised portion of the blade. The raised portion will reduce the drag when the air passes over the blade because the blade has a smooth surface due to the raised portion. The recess in the raised portion provides flexibility to the blade of the present invention to lengthen the useful life of the blade for a ceiling fan.
    Type: Application
    Filed: February 9, 2001
    Publication date: June 20, 2002
    Inventor: Pi-Chin Chen
  • Blade of a ceiling fan
    Patent number: 6402475
    Abstract: A blade for a ceiling fan includes at least one raised portion formed on the surface of the blade with a chamber in the raised portion of the blade. The raised portion will reduce the drag when the air passes over the blade because the blade has a smooth surface due to the raised portion. The recess in the raised portion provides flexibility to the blade of the present invention to lengthen the useful life of the blade for a ceiling fan.
    Type: Grant
    Filed: February 9, 2001
    Date of Patent: June 11, 2002
    Inventor: Pi-Chin Chen