Patents by Inventor King Kwong Chan

King Kwong Chan 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).

  • CHARGER WITH INPUT AND OUTPUT VOLTAGES ADJUSTABLE BY MEANS OF SINGLE CIRCUIT MATED PLUG-IN CARD TYPE SWITCH
    Publication number: 20080252255
    Abstract: The present invention provides a charger whose input and output voltages are adjusted by means of a single circuit mated plug-in card type switches, in particular relates to a charger that is suited for various input voltages adjusted by various plug-in cards to achieve charging, which has a function of adjusting output voltages by means of plug-in card-type switches to securely and properly charge various electronic terminals having various rated voltages, and whose voltages are universally used for charging electronic terminals.
    Type: Application
    Filed: December 13, 2007
    Publication date: October 16, 2008
    Applicant: Mainfair Products Development Co., Ltd.
    Inventor: King Kwong Chan