Patents by Inventor Doris Lenk

Doris Lenk 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).

  • Coatings for cutting tools
    Patent number: 9017809
    Abstract: In one aspect, cutting tools are described having coatings adhered thereto. A coated cutting tool, in some embodiments, comprises a substrate and a coating adhered to the substrate, the coating comprising at least one composite layer deposited by chemical vapor deposition comprising an aluminum oxynitride phase and a metal oxide phase, the metal oxide phase including at least one oxide of a metallic element selected from Group IVB of the Periodic Table.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: April 28, 2015
    Assignee: Kennametal Inc.
    Inventors: Volkmar Sottke, Doris Lenk, Hartmut Westphal, Hendrikus Van Den Berg, Peter Leicht, Mark Greenfield, Yixiong Liu
  • COATINGS FOR CUTTING TOOLS
    Publication number: 20140208659
    Abstract: In one aspect, cutting tools are described having coatings adhered thereto. A coated cutting tool, in some embodiments, comprises a substrate and a coating adhered to the substrate, the coating comprising at least one composite layer deposited by chemical vapor deposition comprising an aluminum oxynitride phase and a metal oxide phase, the metal oxide phase including at least one oxide of a metallic element selected from Group IVB of the Periodic Table.
    Type: Application
    Filed: January 25, 2013
    Publication date: July 31, 2014
    Applicant: Kennametal Inc.
    Inventors: Volkmar Sottke, Doris Lenk, Hartmut Westphal, Hendrikus Van Den Berg, Peter Leicht, Mark Greenfield, Yixiong Liu
  • Method for producing a coated substrate body, substrate body comprising a coating and use of the coated substrate body
    Patent number: 8012535
    Abstract: The invention relates to a method for producing a coated substrate body by chemical vapor deposition at least on one layer made of a carbonitride of a metal of IVa-Vla-groups of the periodic table, wherein a monocyclic hydrocarbon is used in the gas atmosphere during the deposition, in addition to a nitrile. According to the invention, the thus produced coated substrate body has a high degree of hardness and is used, preferably, in cutting operations where the cutting speeds are ?250 m/min.
    Type: Grant
    Filed: October 7, 2006
    Date of Patent: September 6, 2011
    Assignee: Kennametal Widia Produktions GmbH & Co KG
    Inventors: Volkmar Sottke, Doris Lenk, Hartmut Westphal, Hendrikus Van Den Berg
  • METHOD FOR PRODUCING A COATED SUBSTRATE BODY, SUBSTRATE BODY COMPRISING A COATING AND USE OF THE COATED SUBSTRATE BODY
    Publication number: 20090042059
    Abstract: The invention relates to a method for producing a coated substrate body by chemical vapour deposition at least on one layer made of a carbonitride of a metal of IVa-VIa-groups of the periodic table, wherein a monocyclic hydrocarbon is used in the gas atmosphere during the deposition, in addition to a nitrile. According to the invention, the thus produced coated substrate body has a high degree of hardness and is used, preferably, in cutting operations where the cutting speeds are ?250 m/min.
    Type: Application
    Filed: October 7, 2006
    Publication date: February 12, 2009
    Inventors: Volkmar Sottke, Doris Lenk, Hartmut Westphal, Hendrikus Ven Den Berg