Patents by Inventor Goetz Berenbrock

Goetz Berenbrock 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).

  • Gas laser frequency stabilization arrangement and method
    Patent number: 4953169
    Abstract: A frequency control arrangement for a gas laser operable in two longitudinal modes of laser oscillation includes a receiver for generating a difference frequency signal formed from the two longitudinal modes and mixing the difference frequency signal with a reference signal. The resulting intermediate signal is used to control an adjusting element on the laser resonator so that the laser emission is held at a predetermined frequency value.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: August 28, 1990
    Assignee: Siemens Aktiengesellschaft
    Inventors: Bernd Schlemmer, Goetz Berenbrock