Patents by Inventor Johan Bohlmark

Johan Bohlmark 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).

  • Cathodic arc deposition
    Patent number: 9587305
    Abstract: The present invention provides a method for depositing a wear resistant coating on a cutting tool substrate. Cathodic arc deposition is performed using one or more plate-shaped targets and a high arc current of at least 200 A, preferably at least 400 A, whereby a high total ion current of at least 5 A is provided in front of the substrates. A comparatively low bias voltage may be used in order to avoid negative effects of ions impinging on the substrates with high kinetic energy. Thanks to the method of the invention it is possible to deposit thick wear resistant coatings on cutting tool substrates in order to improve cutting performance and tool life.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: March 7, 2017
    Assignee: Lamina Technologies S.A.
    Inventors: Johan Bohlmark, Hermann Curtins, Axel Kinell
  • Coated cutting tool
    Patent number: 9399814
    Abstract: The present invention provides a coated cutting tool comprising a substrate and a coating, where the coating comprises at least one compound layer deposited by cathodic arc deposition, which has a thickness of 10-30 ?m characterized in that the coating has internal stress ranges from low tensile stresses, lower than 0.2 GPa, to compressive stresses, lower than 3 GPa.
    Type: Grant
    Filed: September 19, 2012
    Date of Patent: July 26, 2016
    Assignee: LAMINA TECHNOLOGIES S.A.
    Inventors: Johan Bohlmark, Hermann Curtins, Axel Kinell
  • CATHODIC ARC DEPOSITION
    Publication number: 20150034478
    Abstract: The present invention provides a method for depositing a wear resistant coating on a cutting tool substrate. Cathodic arc deposition is performed using one or more plate-shaped targets and a high arc current of at least 200 A, preferably at least 400 A, whereby a high total ion current of at least 5 A is provided in front of the substrates. A comparatively low bias voltage may be used in order to avoid negative effects of ions impinging on the substrates with high kinetic energy. Thanks to the method of the invention it is possible to deposit thick wear resistant coatings on cutting tool substrates in order to improve cutting performance and tool life.
    Type: Application
    Filed: June 28, 2012
    Publication date: February 5, 2015
    Inventors: Johan Bohlmark, Hermann Curtins, Axel Kinell
  • COATED CUTTING TOOL
    Publication number: 20140377023
    Abstract: The present invention provides a coated cutting tool comprising a substrate and a coating, where the coating comprises at least one compound layer deposited by cathodic arc deposition, which has a thickness of 10-30 ?m characterized in that the coating has internal stress ranges from low tensile stresses, lower than 0.2 GPa, to compressive stresses, lower than 3 GPa.
    Type: Application
    Filed: September 19, 2012
    Publication date: December 25, 2014
    Inventors: Johan Bohlmark, Hermann Curtins, Axel Genvad