Patents by Inventor Wai Man Ng

Wai Man Ng 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).

  • Patent number: 10848003
    Abstract: A method of transmitting power wirelessly from at least two transmitter loops to at least one power receiver. The method comprises separately supplying a respective alternating current to each one of the transmitter loops thereby to transmit wireless power for receipt by the at least one power receiver. Also provided is a method of receiving power wirelessly. Associated apparatuses and an associated system are also provided.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: November 24, 2020
    Assignee: The University of Hong Kong
    Inventors: Wai Man Ng, Cheng Zhang, Deyan Lin, Ron Shu Yeun Hui
  • Publication number: 20190341808
    Abstract: A method of transmitting power wirelessly from at least two transmitter loops to at least one power receiver. The method comprises separately supplying a respective alternating current to each one of the transmitter loops thereby to transmit wireless power for receipt by the at least one power receiver. Also provided is a method of receiving power wirelessly. Associated apparatuses and an associated system are also provided.
    Type: Application
    Filed: February 11, 2019
    Publication date: November 7, 2019
    Inventors: Wai Man Ng, Cheng Zhang, Deyan Lin, Ron Shu Yeun Hui
  • Patent number: 10250072
    Abstract: The present invention provides a wireless power transmitter comprising at least two loops, and separate drivers, each driving a respective one of the loops and providing a respective alternating current to the respective loop, thereby to transmit wireless power for receipt by at least one wireless power receiver. Also provided is a wireless power receiver comprising a receiver loop, and at least two focusing loops. An associated system and an associated method are also provided.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: April 2, 2019
    Assignee: The University of Hong Kong
    Inventors: Wai Man Ng, Cheng Zhang, Deyan Lin, Ron Shu Yeun Hui
  • Publication number: 20150054344
    Abstract: The present invention provides a wireless power transmitter comprising at least two loops, and separate drivers, each driving a respective one of the loops and providing a respective alternating current to the respective loop, thereby to transmit wireless power for receipt by at least one wireless power receiver. Also provided is a wireless power receiver comprising a receiver loop, and at least two focusing loops. An associated system and an associated method are also provided.
    Type: Application
    Filed: August 26, 2013
    Publication date: February 26, 2015
    Inventors: Wai Man Ng, Cheng Zhang, Deyan Lin, Ron Shu Yeun Hui
  • Patent number: 8952617
    Abstract: The present invention provides a passive LC ballast and an associated method of manufacturing a passive LC ballast for use with any one of a plurality of high voltage discharge lamps. The passive LC ballast has an inductance and a capacitance selected in accordance with one of a set of one or more inductance-capacitance pairs. Each inductance-capacitance pair defines a respective inductance and a respective capacitance such that, when the inductance and the capacitance of the passive LC ballast is selected in accordance with any one of the inductance-capacitance pairs and the passive LC ballast is used with any one of the lamps, the lamp operates between respective minimum and maximum lamp powers of the lamp.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: February 10, 2015
    Assignee: City University of Hong Kong
    Inventors: Ron Shu Yuen Hui, Wai Man Ng, Deyan Lin
  • Publication number: 20130106300
    Abstract: The present invention provides a passive LC ballast and an associated method of manufacturing a passive LC ballast for use with any one of a plurality of high voltage discharge lamps. The passive LC ballast has an inductance and a capacitance selected in accordance with one of a set of one or more inductance-capacitance pairs. Each inductance-capacitance pair defines a respective inductance and a respective capacitance such that, when the inductance and the capacitance of the passive LC ballast is selected in accordance with any one of the inductance-capacitance pairs and the passive LC ballast is used with any one of the lamps, the lamp operates between respective minimum and maximum lamp powers of the lamp.
    Type: Application
    Filed: November 3, 2009
    Publication date: May 2, 2013
    Inventors: Ron Shu Yuen Hui, Wai Man Ng, Deyan Lin
  • Patent number: 7014581
    Abstract: A sound emitting inflatable ball includes an inflatable casing, a first polar receptacle, a second polar receptacle, a sound emitting circuit, a power source and a sound emitting device. The inflatable casing forms a spherical ball, when fully inflated. An air nozzle extends from a periphery of the inflatable casing. The first polar receptacle is inserted into a periphery of the inflatable casing and the second polar receptacle is inserted into the periphery of the inflatable casing opposite the first polar receptacle. Preferably, the power source is retained in the first polar receptacle, and the shock sensor and the sound emitting device are retained in the second polar receptacle. At least two wires connect the power source to the shock sensor and the sound emitting device. A light emitting circuit and light emitting device may be suspended from the at least two wires.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: March 21, 2006
    Inventor: Wai-Man Ng
  • Publication number: 20040162170
    Abstract: A sound emitting inflatable ball includes an inflatable casing, a first polar receptacle, a second polar receptacle, a sound emitting circuit, a power source and a sound emitting device. The inflatable casing forms a spherical ball, when fully inflated. An air nozzle extends from a periphery of the inflatable casing. The first polar receptacle is inserted into a periphery of the inflatable casing and the second polar receptacle is inserted into the periphery of the inflatable casing opposite the first polar receptacle. Preferably, the power source is retained in the first polar receptacle, and the shock sensor and the sound emitting device are retained in the second polar receptacle. At least two wires connect the power source to the shock sensor and the sound emitting device. A light emitting circuit and light emitting device may be suspended from the at least two wires.
    Type: Application
    Filed: January 27, 2004
    Publication date: August 19, 2004
    Inventor: Wai-Man Ng
  • Patent number: 6320351
    Abstract: An intelligent switch for preventing over discharge of a vehicle battery includes a switch connected to toggle between a first state for preventing current flow from the battery and a second state for allowing current flow from the battery. A voltage monitor provides a voltage signal indicative of the voltage level of the battery. A vibration sensor provides a vibration signal indicative of vehicle vibration. A controller is connected to receive the voltage signal and the vibration signal and generate a control signal for toggling the switch to the first state when no vibration of the vehicle is detected and the voltage level of the battery falls below a predetermined voltage threshold. The controller generates another control signal when vibration is detected to toggle the switch to the second state. Multiple voltage thresholds and associated timers are used to maintain an adequate battery charge level under variable load conditions.
    Type: Grant
    Filed: January 24, 2001
    Date of Patent: November 20, 2001
    Assignee: Sunlite Trading Limited
    Inventors: Wai Man Ng, Kong Fan Choi
  • Publication number: 20010040441
    Abstract: An intelligent switch for preventing over discharge of a vehicle battery includes a switch connected to toggle between a first state for preventing current flow from the battery and a second state for allowing current flow from the battery. A voltage monitor provides a voltage signal indicative of the voltage level of the battery. A vibration sensor provides a vibration signal indicative of vehicle vibration. A controller is connected to receive the voltage signal and the vibration signal and generate a control signal for toggling the switch to the first state when no vibration of the vehicle is detected and the voltage level of the battery falls below a predetermined voltage threshold. The controller generates another control signal when vibration is detected to toggle the switch to the second state. Multiple voltage thresholds and associated timers are used to maintain an adequate battery charge level under variable load conditions.
    Type: Application
    Filed: January 24, 2001
    Publication date: November 15, 2001
    Inventors: Wai Man NG, Kong Fan Choi
  • Patent number: 5408068
    Abstract: An electric heater for use in a vehicle, to heat a container of food or beverage, includes a flexible jacket that is wrapped around the container to be heated, and an electrical lead and plug for connecting the heater to a source of electrical power, such as the cigarette lighter socket of a vehicle. The flexible jacket consists of inner and outer cover layers. Sandwiched between the inner and outer layers are a flexible layer of electrically conductive material, a flexible electric heating element secured to the layer of electrically conductive material, and a flexible insulating layer disposed between the layer of electrically conductive material and the outer cover layer. The electrical heating element is connected to the electrical lead, to receive power supplied thereby.
    Type: Grant
    Filed: April 29, 1993
    Date of Patent: April 18, 1995
    Inventor: Wai-Man Ng
  • Patent number: D462907
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: September 17, 2002
    Assignee: Man Will Industrial Company
    Inventor: Wai-Man Ng
  • Patent number: D479549
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: September 9, 2003
    Assignee: Concord Camera Corp.
    Inventor: Wai Man Ng