Patents by Inventor Hans-Olof Andren

Hans-Olof Andren 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).

  • HOT-WORK TOOL STEEL AND A PROCESS FOR MAKING A HOT-WORK TOOL STEEL
    Publication number: 20160115573
    Abstract: A low-chromium hot-work tool steel consisting of (in wt-%): C 0.08-0.40, N 0.015-0.30, C+N 0.30-0.50, Cr 1-4, Mo 1.5-3, V 0.8-1.3, Mn 0.5-2, Si 0.1-0.5, optionally Ni<3, Co?5, B<0.01, Fe balance apart from impurities, and a process for making a low-chromium hot-work tool steel article having increased tempering resistance.
    Type: Application
    Filed: January 6, 2016
    Publication date: April 28, 2016
    Inventors: Jörgen ANDERSSON, Henrik JESPERSON, Hans-Olof ANDRÉN, Lars-Erik SVENSSON
  • HOT-WORK TOOL STEEL AND A PROCESS FOR MAKING A HOT-WORK TOOL STEEL
    Publication number: 20140056749
    Abstract: A low-chromium hot-work tool steel consisting of (in wt-%): C 0.08-0.40, N 0.015-0.30, C+N 0.30-0.50, Cr 1-4, Mo 1.5-3, V 0.8-1.3, Mn 0.5-2, Si 0.1-0.5, optionally Ni<3, Co?5, B<0.01, Fe balance apart from impurities, and a process for making a low-chromium hot-work tool steel article having increased tempering resistance.
    Type: Application
    Filed: March 1, 2012
    Publication date: February 27, 2014
    Applicant: UDDEHOLMS AB
    Inventors: Jürgen Andersson, Henrik Jesperson, Hans-Olof Andrén, Lars-Erik Svensson
  • Fine grained sintered cemented carbides containing a gradient zone
    Patent number: 7588833
    Abstract: There is disclosed a fine grained cutting tool insert consisting of a cemented carbide substrate and a coating. The cemented carbide substrate comprises WC, binder phase, and vanadium containing cubic carbide phase with a binder phase enriched surface zone essentially free of cubic carbide phase.
    Type: Grant
    Filed: June 26, 2006
    Date of Patent: September 15, 2009
    Assignees: Sandvik Intellectual Property AB, Seco Tools AB
    Inventors: Nobom Gretta Hashe, Susanne Norgren, Bo Jansson, Alexandra Kusoffsky, Hans-Olof Andrén, Johannes Henoch Neethling
  • Fine grained sintered cemented carbides containing a gradient zone
    Publication number: 20070009764
    Abstract: There is disclosed a fine grained cutting tool insert consisting of a cemented carbide substrate and a coating. The cemented carbide substrate comprises WC, binder phase, and vanadium containing cubic carbide phase with a binder phase enriched surface zone essentially free of cubic carbide phase.
    Type: Application
    Filed: June 26, 2006
    Publication date: January 11, 2007
    Inventors: Nobom Hashe, Susanne Norgren, Bo Jansson, Alexandra Kusoffsky, Hans-Olof Andren, Johannes Neethling
  • Titanium-based carbonitride alloy with controllable wear resistance and toughness
    Patent number: 6129891
    Abstract: The present invention relates to a sintered body of titanium-based carbonitride alloy comprising hard constituents containing at least tungsten in addition to titanium in a binder phase based on cobalt. There are four distinctly different microstructural components, namely: A) cores which are remnants of and have a metal composition determined by the raw material powder; B) tungsten-rich cores formed during the sintering; C) outer rims with intermediate tungsten content formed during the sintering; and D) a binder phase of a solid solution of at least titanium and tungsten in cobalt. Toughness and wear resistance are varied by adding WC, (Ti,W)C, and/or (Ti,W)(C,N) in varying amounts as raw materials.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: October 10, 2000
    Assignee: Sandvik AB
    Inventors: Ulf Rolander, Gerold Weinl, Per Lindahl, Hans-Olof Andren
  • Titanium-based carbonitride alloy with controllable wear resistance and toughness
    Patent number: 6004371
    Abstract: The present invention relates to a sintered body of titanium-based carbonitride alloy comprising hard constituents containing at least tungsten in addition to titanium in a binder phase based on cobalt. There are four distinctly different microstructural components, namely: A) cores which are remnants of and have a metal composition determined by the raw material powder; B) tungsten-rich cores formed during the sintering; C) outer rims with intermediate tungsten content formed during the sintering; and D) a binder phase of a solid solution of at least titanium and tungsten in cobalt. Toughness and wear resistance are varied by adding WC, (Ti,W)C, and/or (Ti,W)(C,N) in varying amounts as raw materials.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: December 21, 1999
    Assignee: Sandvik AB
    Inventors: Ulf Rolander, Gerold Weinl, Per Lindahl, Hans-Olof Andren