Patents by Inventor Helmut Ackermann

Helmut Ackermann 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).

  • Method and apparatus for the optical electronic measurement of a workpiece
    Patent number: 4854707
    Abstract: An optical electronic method for the measuring of a workpiece is disclosed. A beam of radiation is used to illuminate an edge of the object to be measured to form an actual diffraction pattern. The actual diffraction pattern is converted to electronic signals by means of a sensor and correlated electronically with a predetermined theoretically calculated diffraction pattern.
    Type: Grant
    Filed: June 27, 1988
    Date of Patent: August 8, 1989
    Assignee: Georg Fischer Aktiengesellschaft
    Inventors: Manfred Ring, Jurgen Weber, Helmut Ackermann