Patents by Inventor Frida Cullin

Frida Cullin 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).

  • Coated insert
    Patent number: 7727592
    Abstract: The present invention relates to a cutting insert particularly for turning of stainless steel comprising a cemented carbide substrate and a post-treated coating with a substrate of cemented carbide having a composition of from about 5.0 to less than about 8.0 wt % Co, from about 3.0 to about 8.0 wt % cubic carbides of the metals Ti, Ta and Nb with a Ti/(Ti+Ta+Nb) ratio of from about 0.05 to about 0.3 and balance tungsten carbide (WC) having a grain size of from about 1.5 to about 3.5 ?m in the as-sintered state. Further, the substrate has a surface zone of from about 5 to about 30 ?m characterized by an enrichment of binder phase and a depletion of cubic carbides, and a coating having a first, innermost layer system of one or several layers of TiCxNyOz with x+y+z?1 with a total thickness of from about 0.7 to about 5.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: June 1, 2010
    Assignee: Sandvik Intellectual Property AB
    Inventors: Gunilla Cedergren, Mikael Lindholm, Ann-Britt Ljungberg, Mikael Lagerquist, Frida Cullin
  • Coated insert
    Publication number: 20080286462
    Abstract: The present invention relates to a cutting insert particularly for turning of stainless steel comprising a cemented carbide substrate and a post-treated coating with a substrate of cemented carbide having a composition of from about 5.0 to less than about 8.0 wt % Co, from about 3.0 to about 8.0 wt % cubic carbides of the metals Ti, Ta and Nb with a Ti/(Ti+Ta+Nb) ratio of from about 0.05 to about 0.3 and balance tungsten carbide (WC) having a grain size of from about 1.5 to about 3.5 ?m in the as-sintered state. Further, the substrate has a surface zone of from about 5 to about 30 ?m characterized by an enrichment of binder phase and a depletion of cubic carbides, and a coating having a first, innermost layer system of one or several layers of TiCxNyOz with x+y+z?1 with a total thickness of from about 0.7 to about 5.
    Type: Application
    Filed: May 29, 2008
    Publication date: November 20, 2008
    Inventors: Gunilla Cedergren, Mikael Lindholm, Ann-Britt Ljungberg, Mikael Lagerquist, Frida Cullin
  • Coated insert
    Patent number: 7396371
    Abstract: The present invention relates to a cutting insert particularly for turning of stainless steel comprising a cemented carbide substrate and a post-treated coating with a substrate of cemented carbide having a composition of from about 5.0 to less than about 8.0 wt % Co, from about 3.0 to about 8.0 wt % cubic carbides of the metals Ti, Ta and Nb with a Ti/(Ti+Ta+Nb) ratio of from about 0.05 to about 0.3 and balance tungsten carbide (WC) having a grain size of from about 1.5 to about 3.5 ?m in the as-sintered state. Further, the substrate has a surface zone of from about 5 to about 30 ?m characterized by an enrichment of binder phase and a depletion of cubic carbides, and a coating having a first, innermost layer system of one or several layers of TiCxNyOz with x+y+z?1 with a total thickness of from about 0.7 to about 5.
    Type: Grant
    Filed: June 24, 2005
    Date of Patent: July 8, 2008
    Assignee: Sandvik Intellectual Property AB
    Inventors: Gunilla Cedergren, Mikael Lindholm, Ann-Britt Ljungberg, Mikael Lagerquist, Frida Cullin
  • Coated insert
    Publication number: 20060019117
    Abstract: The present invention relates to a cutting insert particularly for turning of stainless steel comprising a cemented carbide substrate and a post-treated coating with a substrate of cemented carbide having a composition of from about 5.0 to less than about 8.0 wt % Co, from about 3.0 to about 8.0 wt % cubic carbides of the metals Ti, Ta and Nb with a Ti/(Ti+Ta+Nb) ratio of from about 0.05 to about 0.3 and balance tungsten carbide (WC) having a grain size of from about 1.5 to about 3.5 ?m in the as-sintered state. Further, the substrate has a surface zone of from about 5 to about 30 ?m characterized by an enrichment of binder phase and a depletion of cubic carbides, and a coating having a first, innermost layer system of one or several layers of TiCxNyOz with x+y+z?1 with a total thickness of from about 0.7 to about 5.
    Type: Application
    Filed: June 24, 2005
    Publication date: January 26, 2006
    Applicant: Sandvik Intellectual Property HB
    Inventors: Gunilla Cedergren, Mikael Lindholm, Ann-Britt Ljungberg, Mikael Lagerquist, Frida Cullin