Patents by Inventor GuoHong Ruan

GuoHong Ruan 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).

  • Sterilizable air purifier
    Patent number: D978312
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: February 14, 2023
    Assignee: FUJIAN OSPRING TECHNOLOGY DEVELOPMENT CO., LTD
    Inventors: KaiQin Xu, GuoHong Ruan, XiaoYun Lin, XinYi Hu, Qin Zheng, Hao Fang, WenJuan Wu