Patents by Inventor Chien Sun

Chien Sun 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).

  • Improved air ionizing apparatus
    Patent number: 5407469
    Abstract: An improved air ionizing apparatus that may be used as part of an air filtering system. The apparatus consists of an air passageway with at least one negatively charged ionizing member therein and a conductive strip, positively charged with respect to the ionizing member extending around at least a major portion of the interior periphery of the outlet of the passageway. The conductive strip attracts the negative ions, causing them to disperse as air directed down the passageway propels them toward and through the outlet of the passageway.
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: April 18, 1995
    Assignee: Sunova Company
    Inventor: Chien Sun