Patents by Inventor Yadi Zheng

Yadi Zheng 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).

  • Laryngoscope blade
    Patent number: D592306
    Type: Grant
    Filed: November 20, 2007
    Date of Patent: May 12, 2009
    Inventors: Warren V. Bigelow, Zhongyong tong, Shengdong Qui, Qitao Lai, Yadi Zheng