Patents by Inventor Chi Yiu Chung

Chi Yiu Chung 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: 20080200092
    Abstract: The present invention provides a magnetic item comprising a container having an end; a base portion having a cavity and a first end connected with the end of the container; a first magnetic means movably received in the container; a second magnetic means arranged at the end of the container or the first end of the base portion and disposed in a manner that the second magnetic means and the first magnetic means attract each other; and a third magnetic means received and disposed within a second end of the base portion in a manner that the third magnetic means and the second magnetic means repulse each other; wherein the repulsion force generated between the second and third magnetic means overweighs the attraction force generated between the first and second magnetic means, when the second and third magnetic means are made to come near to each other.
    Type: Application
    Filed: February 16, 2007
    Publication date: August 21, 2008
    Inventor: Chi Yiu Chung
  • Patent number: D477639
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: July 22, 2003
    Assignee: Sonera International Limited
    Inventor: Chi Yiu Chung