Patents by Inventor Wai Lun Wong

Wai Lun Wong 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).

  • Adjustable electrical plug
    Patent number: 6632098
    Abstract: An electrical plug, for example an AC adaptor, has a pair of pins that may be moved between an operative position and a non-operative position in which the pins are received within slots formed in a body. When in the non-operative position the pins are completely received within the slots and a mechanism is provided for releasing the pins from the slots when it is desired to move the pins into their operative position. The pins pivot about a pivot axis located adjacent an edge of the body so that the pins pivot outwardly towards the edge into their operative position.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: October 14, 2003
    Assignee: PI Electronics (HK) Ltd.
    Inventors: Wai Lun Wong, Yiu Keung Fung
  • Speaker
    Patent number: D933044
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: October 12, 2021
    Assignee: Aleo Electronics Limited
    Inventors: Wilson Wai Sing Leung, Wai Lun Wong
  • Laptop computer
    Patent number: D941812
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: January 25, 2022
    Assignee: Alco Electronics Limited
    Inventors: Wilson Wai Sing Leung, Wai Lun Wong, Pui Ting Mak
  • Speaker
    Patent number: D949128
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: April 19, 2022
    Assignee: Alco Electronics Limited
    Inventors: Wilson Wai Sing Leung, Wai Lun Wong