Patents by Inventor Wing Ho Lam

Wing Ho Lam 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).

  • Publication number: 20030214403
    Abstract: The location indicator system includes a base station and a hand-held device. A hand-held device contains directional antennas. Each directional antenna radiates a signal in a particular direction. When the hand-held device is activated, it generates a directional signal, which represents a particular direction, and then the corresponding directional antenna radiates the directional signal respectively. In response, a base station that is located at an object receives the transmitted signals, computes the directional signals to determine its location with respect to the hand-held location, and then it transmits the location information back to the hand-held device. A hand-held device receives the location information and then indicates the location of the object to the users. The location indicator system can be used to determine a location of slow movement or a stationary object, person, and animal. The system is suitable for indoor and outdoor use. It is a cost effective and efficient device.
    Type: Application
    Filed: May 14, 2003
    Publication date: November 20, 2003
    Inventors: Wing Ho Lam, Jonathan Lap Yan Tsui
  • Patent number: D535059
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: January 9, 2007
    Assignee: Grace Artificial Jewellery Manufacturing Company Limited
    Inventor: Wing Ho Lam
  • Patent number: D827148
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: August 28, 2018
    Assignee: LIDL HONG KONG LIMITED
    Inventor: Wing Ho Lam