Patents by Inventor Stefan Reinebrandt

Stefan Reinebrandt 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).

  • Publication number: 20080166527
    Abstract: The present invention relates to a coated cutting insert with excellent toughness properties particularly useful for toughness demanding short hole drilling in general steel materials and a method of making the same. The inserts comprise a substrate and a coating. The substrate comprises WC, from about 8 to about 11 wt-% Co and from about 0.2 to about 0.5 wt-% Cr with an average WC-grain size of from about 0.5 to about 1.5 ?m and a CW-ratio of from about 0.80 to about 0.90. The coating comprises a first (innermost) layer of TiCxNyOz with a thickness less than about 1.5 ?m, a layer of TiCxNyOz with a thickness of from about 1 to about 8 ?m with columnar grains, a layer of fine-grained grain ?-Al2O3 with a thickness of from about 0.5 to about 5 ?m and a further layer less than about 1 ?m thick of TiCxNyOz whereby at the rake face the outermost TiCxNyOz-layer and Al2O3-layer are fully or partly missing.
    Type: Application
    Filed: December 20, 2007
    Publication date: July 10, 2008
    Inventors: Anders Lenander, Jan Kjellgren, Torbjorn Agren, Stefan Reinebrandt, Joakim Andersson, Robert Granstrom