Patents by Inventor Krystof TURBA

Krystof TURBA 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).

  • Rock drill insert
    Patent number: 11285544
    Abstract: A rock drill insert made of cemented carbide having hard constituents of tungsten carbide (WC) in a binder phase including Co, wherein the cemented carbide includes 4-18 mass % Co and a balance of WC and unavoidable impurities. The cemented carbide also includes Cr in such an amount that the mass ratio Cr/Co is within the range of 0.04-0.19, and the difference between the hardness at a 0.3 mm depth at any point of the surface of the rock drill insert and the hardness of the bulk of the rock drill insert is at least 40 HV3.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: March 29, 2022
    Assignee: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Malin Martensson, Ioannis Arvanitidis, Krystof Turba
  • ROCK DRILL INSERT
    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
  • ROCK DRILL INSERT
    Publication number: 20200030886
    Abstract: A rock drill insert made of cemented carbide having hard constituents of tungsten carbide (WC) in a binder phase including Co, wherein the cemented carbide includes 4-18 mass % Co and a balance of WC and unavoidable impurities. The cemented carbide also includes Cr in such an amount that the mass ratio Cr/Co is within the range of 0.04-0.19, and the difference between the hardness at a 0.3 mm depth at any point of the surface of the rock drill insert and the hardness of the bulk of the rock drill insert is at least 40 HV3.
    Type: Application
    Filed: September 25, 2017
    Publication date: January 30, 2020
    Inventors: Malin MARTENSSON, Ioannis ARVANITIDIS, Krystof TURBA