Patents by Inventor Yan-Sheng Liu

Yan-Sheng Liu 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: 12081023
    Abstract: A portable power station (PPS) unit includes a controller that receives AC current information of AC input current at an AC input port and produces a control signal that is used to control the PPS unit to operate as a voltage source or a current source, and to control an AC output current at substantially the same magnitude, frequency, and phase as the AC input current. A PPS apparatus includes two or more PPS units connected together such that the AC output power of one PPS unit is connected to the AC input port of a next PPS unit; wherein a first PPS unit is a voltage source and each of the second or more PPS units is a current source, and a total AC output power of the PPS apparatus is substantially a sum of the AC output power produced by the two or more PPS units.
    Type: Grant
    Filed: December 12, 2022
    Date of Patent: September 3, 2024
    Assignee: Queen's University at Kingston
    Inventors: Yan-Fei Liu, Binghui He, Yang Chen, Bo Sheng
  • Patent number: 7435138
    Abstract: An electrical connector comprises an insulated housing (1) having a base (10) a plurality of conductive terminals (2) retained in the housing and a shielding member (3) assembled on the housing. The base extends along a longitudinal direction and defines a latching hole (16) recessed at one of lengthwise ends of thereof. The shielding member has a latching portion (34) extending along a mating direction of the electrical connector perpendicular to the longitudinal direction so as to be retained in said latching hole.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: October 14, 2008
    Assignee: Hon Hai Precision Ind. Co., Ltd.
    Inventors: Yan-Sheng Liu, Ren-Chih Li
  • Publication number: 20070243764
    Abstract: An electrical connector comprises an insulated housing (1) having a base (10) a plurality of conductive terminals (2) retained in the housing and a shielding member (3) assembled on the housing. The base extends along a longitudinal direction and defines a latching hole (16) recessed at one of lengthwise ends of thereof. The shielding member has a latching portion (34) extending along a mating direction of the electrical connector perpendicular to the longitudinal direction so as to be retained in said latching hole.
    Type: Application
    Filed: February 7, 2007
    Publication date: October 18, 2007
    Inventors: Yan-Sheng Liu, Ren-Chih Li