Patents by Inventor Roberth Ljunggren

Roberth Ljunggren 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).

  • Patent number: 9157143
    Abstract: The present invention relates to a coated cutting tool comprising a PVD coating and a cemented carbide substrate comprising Co in an amount of 12.5-17 wt %, Cr in an amount such that the Cr/Co weight ratio is 0.05-0.15, a Ti of between 50 to 300 ppm by weight and a CW_Cr value between 0.8-0.97.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: October 13, 2015
    Assignee: Sandvik Intellectual Property
    Inventors: Marie Pettersson, Andreas Hedin, Axel Genvad, Ann-Britt Ljungberg, Lars Gustafsson, Roberth Ljunggren
  • Publication number: 20130202896
    Abstract: The present invention relates to a coated cutting tool comprising a PVD coating and a cemented carbide substrate comprising Co in an amount of 12.5-17 wt %, Cr in an amount such that the Cr/Co weight ratio is 0.05-0.15, a Ti of between 50 to 300 ppm by weight and a CW Cr value between 0.8-0.97.
    Type: Application
    Filed: May 31, 2011
    Publication date: August 8, 2013
    Applicant: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Marie Pettersson, Andreas Hedin, Axel Genvad, Ann-Britt Ljungberg, Lars Gustafsson, Roberth Ljunggren