Patents by Inventor Fuk Sheung Fung

Fuk Sheung Fung 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).

  • Battery operated portable electronic device having dual batteries
    Patent number: 7573154
    Abstract: A battery-operated portable electronic device has a primary battery to provide energy to low current circuitry of the portable device, and a supplemental battery to provide intermittent bursts of energy to other components of the portable device. A charging device charges the supplemental battery from the primary battery. An electronic device employing the battery system may have a battery compartment for the primary battery, which can be an AAA, AA, C, or D size battery.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: August 11, 2009
    Assignee: Perception Digital Limited
    Inventors: Chi-Ying Tsui, Fuk Sheung Fung
  • BATTERY OPERATED PORTABLE ELECTRONIC DEVICE HAVING DUAL BATTERIES
    Publication number: 20080179957
    Abstract: A battery-operated portable electronic device has a primary battery to provide energy to low current circuitry of the portable device, and a supplemental battery to provide intermittent bursts of energy to other components of the portable device. A charging device charges the supplemental battery from the primary battery. An electronic device employing the battery system may have a battery compartment for the primary battery, which can be an AAA, AA, C, or D size battery.
    Type: Application
    Filed: January 30, 2007
    Publication date: July 31, 2008
    Applicant: PERCEPTION DIGITAL LIMITED
    Inventors: Chi-Ying Tsui, Fuk Sheung Fung