Patents by Inventor Kin Wah Wong

Kin Wah 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).

  • Pump housing and drainage pump
    Patent number: 9777745
    Abstract: A drainage pump has an impeller, a motor for driving the impeller, and a pump housing surrounding the impeller. The pump housing has an end wall, a side wall, an inlet, and an outlet. The side wall extends from the end wall. The side wall and the end wall cooperatively define a pump chamber. The inner surface of the side wall has at least one interfering surface for mixing of fluid flowing through the pump housing.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: October 3, 2017
    Assignee: Johnson Electric S.A.
    Inventors: Zheng Zhao, Kin Wah Wong, Min Li
  • VOLUTE AND DRAINAGE PUMP
    Publication number: 20120134796
    Abstract: A drainage pump has an impeller, a motor for driving the impeller, and a volute housing the impeller. The volute has an end wall, a side wall, an inlet, and an outlet. The side wall extends from the end wall. The side wall and the end wall cooperatively define a pump chamber. The inner surface of the side wall has at least one interfering surface for mixing of fluid flowing through the volute.
    Type: Application
    Filed: November 23, 2011
    Publication date: May 31, 2012
    Inventors: Zheng Zhao, Kin Wah Wong, Min Li