Patents by Inventor Lars-Åke Engström

Lars-Åke Engström 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).

  • Multiple grade cemented carbide inserts for metal working and method of making the same
    Patent number: 6685880
    Abstract: A cemented carbide insert of a first grade has at least one cutting point consisting of a cemented carbide of a second grade with different composition and/or grain size with an uneven transition zone between the first and second grade.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: February 3, 2004
    Assignee: Sandvik Aktiebolag
    Inventors: Lars-Åke Engström, Hélène Ouchterlony