Patents by Inventor Michael J. Janssen

Michael J. Janssen 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).

  • Cutting elements having cutting edges with continuous varying radii and bits incorporating the same
    Patent number: RE48524
    Abstract: A cutting element is provided having a substrate and an ultra hard material cutting layer over the substrate. The cutting layer includes a surface portion for making contact with a material to be cut by the cutting element. The surface portion in cross-section has a curvature that has a varying radius of curvature. A bit incorporating such a cutting element is also provided.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: April 20, 2021
    Assignee: Smith International, Inc.
    Inventors: Yuelin Shen, Youhe Zhang, Michael J. Janssen