Patents by Inventor Ren Xiaobing

Ren Xiaobing 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).

  • Lead-free piezoelectric material
    Patent number: 8182713
    Abstract: There is provided a lead-free piezoelectric material capable of showing a high piezoelectric coefficient (d33>500 pC/N) exceeding that of soft PZT. The lead-free piezoelectric material contains no toxic element such as Pb, comprising a pseudo-binary solid solution of {[(Ba1-x1M1x1)((Ti1-xZrx)1-y1N1y1)O3]-?%[(Ba1-yCay)1-x2M2x2)(Ti1-y2N2y2)O3]} (wherein M1, N1, M2 and N2 represent an additive element)(abbreviated as BZT-?% BCT).
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: May 22, 2012
    Assignee: National Institute for Materials Science
    Inventors: Ren Xiaobing, Liu Wenfeng