Patents by Inventor Lars Drougge

Lars Drougge 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).

  • Tool of cemented carbide for cutting, punching or nibbling
    Patent number: 5403652
    Abstract: There is provided a cemented carbide tool for punching, cutting or nibbling containing WC and a binder comprising at least one of the metals Co, Ni and Fe. The tool comprises a core of eta-phase-containing cemented carbide surrounded by an eta-phase-free surface zone with the working surface of the tool comprising exposed eta-phase-containing cemented carbide.
    Type: Grant
    Filed: May 6, 1993
    Date of Patent: April 4, 1995
    Assignee: Sandvik AB
    Inventor: Lars Drougge
  • Tool of cemented carbide for cutting, punching or nibbling
    Patent number: 5235879
    Abstract: There is provided a cemented carbide tool for punching, cutting or nibbling containing WC and a binder comprising at least one of the metals Co, Ni and Fe. The tool comprises a core of eta-phase-containing cemented carbide surrounded by an eta-phase-free surface zone with the working surface of the tool comprising exposed eta-phase-containing cemented carbide.
    Type: Grant
    Filed: December 6, 1991
    Date of Patent: August 17, 1993
    Assignee: Sandvik AB
    Inventor: Lars Drougge