Patents by Inventor Helmut Fritzsche

Helmut Fritzsche 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 of forming a single crystal material
    Patent number: 5597411
    Abstract: A method of growing an epitaxial like, single crystal, superconducting film by promoting the epitaxial-like growth of film from a single nucleation site in deference to substantially all other nucleation sites on the substrate. The present invention contemplates the use of a mask to systematically expose sections of the substrate to the deposition apparatus. This mask may include an adjustable or fixed aperture and is manipulated as herein described to systematically expose areas of the substrate to the deposition apparatus.
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: January 28, 1997
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Helmut Fritzsche, Stanford R. Ovshinsky, Rosa Young
  • Gas laser having two longitudinal modes of laser oscillation
    Patent number: 5097481
    Abstract: In a gas laser having integrated mirrors wherein two longitudinal modes of the laser oscillation are excited during operation, and wherein the oscillatory planes thereof reside perpendicularly relative to one another, a stabilization of the angular position of the oscillatory planes is achieved in that an optically birefringent element is arranged in the beam path of the optical resonator.
    Type: Grant
    Filed: July 19, 1990
    Date of Patent: March 17, 1992
    Assignee: Siemens Aktiengesellschaft
    Inventors: Helmut Fritzsche, Hans Krueger