Patents by Inventor Hans-Peter Duerr

Hans-Peter Duerr 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).

  • Cutter insert and milling tool
    Patent number: 6921233
    Abstract: A cutter insert for milling tools includes a base body having a base surface, a top surface, and four side surfaces. The four side surfaces, together with each of the base surface and the top surface, define respective cutting edges. The base body is twisted about each of two perpendicular, coplanar axes of the base body. Each side surface has two opposite corner edges that are offset from one another in a direction parallel to a center axis of the base body.
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: July 26, 2005
    Assignee: Walter AG
    Inventors: Hans-Peter Duerr, Thorsten Stabel
  • Cutter insert and milling tool
    Publication number: 20040208713
    Abstract: A cutter insert for milling tools includes a base body having a base surface, a top surface, and four side surfaces. The four side surfaces, together with each of the base surface and the top surface, define respective cutting edges. The base body is twisted about each of two perpendicular, coplanar axes of the base body. Each side surface has two opposite corner edges that are offset from one another in a direction parallel to a center axis of the base body.
    Type: Application
    Filed: March 2, 2004
    Publication date: October 21, 2004
    Applicant: WALTER AG
    Inventors: Hans-Peter Duerr, Thorsten Stabel