Patents by Inventor Tangqing Zhang

Tangqing Zhang 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).

  • Ergonomic mattress
    Publication number: 20140115791
    Abstract: An ergonomic mattress is provided with a support layer; a foam layer disposed on a top of the support layer; a first comfort layer disposed on a top of the foam layer; and a second comfort layer disposed under the support layer. Alternatively, a latex layer is further disposed between the support layer and the foam layer.
    Type: Application
    Filed: September 18, 2013
    Publication date: May 1, 2014
    Applicant: Guizhou Daziran Technology Co., Ltd
    Inventors: Zongyong Chen, Yuqian Li, Jian Lin, Tangqing Zhang, Xiaobing Shi, Zhenglie Dai