Patents by Inventor Dulin Tao

Dulin Tao 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).

  • Direction adjustable LED lamp used in a sign
    Patent number: 11608943
    Abstract: The present disclosure provides a direction adjustable LED lamp used in a sign, which includes a lamp body, two lamp holders arranged on an upper end and a lower end of the lamp body respectively, a plurality of LED modules installed on a surface of the lamp body, an outer casing installed in the lamp body, a buffer column installed on a surface of the outer casing, an isolated constant current driver installed in the outer casing, the lamp body defines a limit groove closing to the LED modules, and a horizontal plate is installed in the limit groove.
    Type: Grant
    Filed: October 25, 2021
    Date of Patent: March 21, 2023
    Assignee: RISHANG OPTOELECTRONICS CO., LTD.
    Inventors: Jun Liang, Dulin Tao, Xiaomin Yan