Patents by Inventor Ningning Han

Ningning Han 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).

  • Air humidifier
    Patent number: D888913
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: June 30, 2020
    Inventors: Wenbing Ling, Chunqing Hu, Xue Zhang, Chunyue Xu, Jingjing Wang, Luan Qin, Huanlong Wu, Xuxiang He, Sha Li, Jijian Zhang, Nanfei Chen, Jinmei Feng, Qinhong Chen, Binglei Niu, Yang Guo, Weirui Liu, Linjun Yu, Zhaigu Fu, Zhaoyang Wu, Jiaying Tan, Junyi Zhou, Huihui Wang, Jianming Guan, Jianfeng Lin, Qingfeng Zhang, Xusheng Chen, Min Zhang, Ningning Han, Jiahua Liu, Kangquan Xu, Qingqing Cai