Patents Assigned to ARGENTIUM INTERNATIONAL LTD
  • Process for investment casting and casting grain for use in the process
    Patent number: 9708691
    Abstract: In an Ag, Cu, Ge alloy containing boron as grain refiner, investment castings of a clean bright silvery appearance and/or free from cracking defects are obtained by incorporation of silicon, in some embodiments in the absence of added zinc.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: July 18, 2017
    Assignee: ARGENTIUM INTERNATIONAL LTD
    Inventor: Peter Gamon Johns