Patents by Inventor Jusheng MA

Jusheng MA 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).

  • Pb-free solder alloy
    Patent number: 10828731
    Abstract: A Pb-free solder alloy contains 4-12 wt% of Zn, 0.5-4 wt% of Bi, 0.5-5 wt% of In, 0.005-0.5 wt% of P, 0.001-0.5 wt% of Zr and at least one selected from: 0-0.1 wt% of Y, 0-0.2 wt% of Ge, 0-0.05 wt% of Mg, 0-0.02 wt% of B, 0-0.05 wt% of Al, 0-0.2 wt% of Ni and 0-0.3 wt% of Ag. A balance of the Pb-free solder alloy is Sn.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: November 10, 2020
    Inventor: Jusheng Ma
  • Pb-FREE SOLDER ALLOY
    Publication number: 20150343570
    Abstract: A Pb-free solder alloy contains 4-12 wt % of Zn, 0.5-4 wt % of Bi, 0.5-5 wt % of In, 0.005-0.5 wt % of P, 0.001-0.5 wt % of Zr and at least one selected from a group consisting of: 0-0.1 wt % of Y, 0-0.2 wt % of Ge, 0-0.05 wt % of Mg, 0-0.02 wt % of B, 0-0.05 wt % of Al, 0-0.2 wt % of Ni and 0-0.3 wt % of Ag. And a balance of the Pb-free solder alloy is Sn.
    Type: Application
    Filed: January 21, 2014
    Publication date: December 3, 2015
    Inventor: Jusheng MA