Patents by Inventor Jose Maria TARRAGO CIFRE

Jose Maria TARRAGO CIFRE 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).

  • Publication number: 20210140019
    Abstract: A rock drill insert made of cemented carbide includes hard constituents of tungsten carbide (WC) in a binder phase of Ni—Cr, or Ni—Co—Cr, and a balance of WC and unavoidable impurities. The cemented carbide has a 3.5-18 wt % binder phase. The binder phase has >0 wt % Ni. The mass ratio Cr/(Ni+Co) is 0.02-0.19. A difference between the hardness at 0.3 mm depth at some point of the surface of the rock drill insert and the minimum hardness of the bulk of the rock drill insert is at least 30 HV3.
    Type: Application
    Filed: March 22, 2019
    Publication date: May 13, 2021
    Inventors: Mirjam LILJA, Jose Maria TARRAGO CIFRE, Ida BORGH, Malin MARTENSSON, Ioannis ARVANITIDIS, Krystof TURBA