Patents by Inventor Qian-Shan Chen

Qian-Shan 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).

  • Electric waving fan with oscillating multi-direction fan vane element
    Patent number: 6050790
    Abstract: An electric waving fan includes a single air moving fan vane element, a motor for generating power, a transmission apparatus for converting the power to motion, and a power output assembly for moving the single fan vane element simultaneously in two directions such that the fan vane element moves with a waving motion. The fan further includes a base and a wrist assembly that can be moved in two directions relative to the base which can be mounted on a wall, on the floor or desk, or hang from the ceiling.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: April 18, 2000
    Inventor: Qian-Shan Chen