Patents by Inventor Kwong Keung Leung

Kwong Keung Leung 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).

  • DEVICE AND METHOD FOR UTILIZING WATER FLOW KINETIC ENERGY CONTINUOUSLY
    Publication number: 20100207394
    Abstract: A device for utilizing water flow kinetic energy continuously comprises at least one water pump, at least one flume and plural hydro-generators. The water pump is employed to continuously supply water from a water supply to an upper head end of a flume, and then the water will naturally flow from the upper head end of the flume to a lower tail end to drive the plural hydro-generators disposed on the flume to generate power. The flume has a length larger than a distance between the water supply and an upper head end of the flume. The water is finally discharged to a desired position or back to the upper head end by a water pump disposed at the lower tail end of the flume.
    Type: Application
    Filed: May 28, 2008
    Publication date: August 19, 2010
    Inventor: Kwong-Keung Leung
  • Wireless purchase and on-line inventory apparatus and method for vending machines
    Patent number: 7110954
    Abstract: The present invention relates to an apparatus and a method for wireless purchase of merchandise from a vending machine by using a cellular mobile phone. The present invention permits a cellular mobile phone user to dial a sequence of code on the phone to invoke the vending machine to dispense merchandise, where payment is charged to the mobile phone account. The present invention also relates to an apparatus and a method for on-line inventory management. With on-line inventory management, the present invention provides high efficient operation, reduced operation cost, and just-in-time service and merchandise delivery. The present invention further relates to an apparatus and a method that allow both on-line inventory management and wireless purchase of merchandise in a vending machine.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: September 19, 2006
    Assignee: University of Hong Kong
    Inventors: Hon Ching Yung, Kwong Keung Leung, Hon Seng Lai
  • Wireless purchase and on-line inventory apparatus and method for vending machines
    Publication number: 20020128932
    Abstract: The present invention relates to an apparatus and a method for wireless purchase of merchandise from a vending machine by using a cellular mobile phone. The present invention permits a cellular mobile phone user to dial a sequence of code on the phone to invoke the vending machine to dispense merchandise, where payment is charged to the mobile phone account. The present invention also relates to an apparatus and a method for on-line inventory management. With on-line inventory management, the present invention provides high efficient operation, reduced operation cost, and just-in-time service and merchandise delivery. The present invention further relates to an apparatus and a method that allow both on-line inventory management and wireless purchase of merchandise in a vending machine.
    Type: Application
    Filed: March 12, 2001
    Publication date: September 12, 2002
    Inventors: Hon Ching Yung, Kwong Keung Leung, Hon Seng Lai