Patents by Inventor Zheng Juntao

Zheng Juntao 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).

  • LED lightbulb with adjustable color temperature
    Patent number: 11512839
    Abstract: An LED lightbulb is disclosed. The LED lightbulb includes at least two sets of LEDs that emit two different color temperature light and that are located on a metal core printed circuit board. The combine intensity outputs of the at least sets of LEDs generate a selected corrected color temperature output. The corrected color temperature output is changed by rotating a diffusing unit with a conductive contact pad that engages contact tracks on color corrected temperature (CCT) buttons and thereby closing a circuit corresponding to a selected corrected color temperature output.
    Type: Grant
    Filed: June 1, 2022
    Date of Patent: November 29, 2022
    Assignee: Green Creative Ltd.
    Inventors: Bertrand Delalande, Zheng Juntao