Patents by Inventor WEN RAN

WEN RAN 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).

  • Electronic ballast interface circuit
    Patent number: 11006490
    Abstract: There is proposed an interface circuit for connecting an electronic ballast to a lighting arrangement, in which control of a coupling configuration of the interface circuit is dependent upon a frequency of the electronic ballast. In particular, a coupling configuration of the interface circuit is controlled by a control arrangement based on the ballast frequency.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: May 11, 2021
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Xianhui Zhang, Derek Zheng, Zhi Quan Chen, Huojun Long, Wen Ran, Haimin Tao
  • ELECTRONIC BALLAST INTERFACE CIRCUIT
    Publication number: 20200068678
    Abstract: There is proposed an interface circuit for connecting an electronic ballast to a lighting arrangement, in which control of a coupling configuration of the interface circuit is dependent upon a frequency of the electronic ballast. In particular, a coupling configuration of the interface circuit is controlled by a control arrangement based on the ballast frequency.
    Type: Application
    Filed: March 1, 2018
    Publication date: February 27, 2020
    Inventors: XIANHUI ZHANG, DEREK ZHENG, ZHI QUAN CHEN, HUOJUN LONG, WEN RAN, HAIMIN TAO