Patents by Inventor Ian Grenbjörk

Ian Grenbjörk 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).

  • Drill bit with wear shield
    Patent number: 11187045
    Abstract: This disclosure relates to a percussive drill bit comprising PCD studs and a hard facing material that is strategically located to minimise stud pop outs and the amount of hard facing material used.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: November 30, 2021
    Assignee: ELEMENT SIX GMBH
    Inventors: Bernd Heinrich Ries, Hauke Hinners, Ian Grenbjörk, Tomas Rostvall