Patents by Inventor Gerhard Kroupa

Gerhard Kroupa 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).

  • Solid-state laser comprising a resonator with a monolithic structure
    Publication number: 20100195679
    Abstract: The invention relates to a solid-state laser, comprising a resonator (1) with a monolithic structure consisting of a laser medium, on which a passive Q-switch (12) and at least one resonator mirror are directly formed, and comprising several laser diodes (22) which, as a pump medium, radiate into the resonator (1) from the side. A simple and robust configuration with simultaneous high efficiency is achieved in such a way that the monolithic resonator (1) is held at one end in a first holding plate (31) and is held at its other end in a second holding plate (32), and between the first and second holding plate (31, 32) at least one carrier ring (21) is mounted which carries several laser diodes (22) which are passively wavelength stabilized.
    Type: Application
    Filed: June 13, 2007
    Publication date: August 5, 2010
    Inventors: Gerhard Kroupa, Georg Franz, Ernst Winklhofer, Roman Leitner
  • Internal combustion engine
    Patent number: 7499477
    Abstract: The invention relates to an internal combustion engine with a laser ignition device (1), Q-switched, pumped solid-state laser with a pulsed pumped light source (30), a solid laser crystal (2), enclosed in a resonator, a Q-switch (4), for increasing the power density, at least one output mirror (6) and a focussing device (7), by means of which the laser beam (26) may be focussed in a combustion chamber.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: March 3, 2009
    Assignee: AVL List GmbH
    Inventors: Ernst Winklhofer, Georg Franz, Gerhard Kroupa, Volker Mannheim, Alfred Binder
  • Internal combustion engine
    Publication number: 20070064746
    Abstract: The invention relates to an internal combustion engine with a laser ignition device (1), Q-switched, pumped solid-state laser with a pulsed pumped light source (30), a solid laser crystal (2), enclosed in a resonator, a Q-switch (4), for increasing the power density, at least one output mirror (6) and a focussing device (7), by means of which the laser beam (26) may be focussed in a combustion chamber.
    Type: Application
    Filed: September 23, 2004
    Publication date: March 22, 2007
    Inventors: Ernst Winklhofer, Georg Franz, Gerhard Kroupa, Volker Mannheim, Alfred Binder
  • Holding means
    Publication number: 20020140148
    Abstract: For especially simple and reliable handling of thin and/or bent semiconductor wafers it is proposed in a corresponding holding means (100) that there is a gas flowing through at least one first means (5) for producing the forces which pull a semiconductor wafer toward the means (100) based on the Bernoulli principle and that there is at least one second means (2, 3) for holding the semiconductor wafer on the means (100) as a result of the forces produced by at least one electromagnetic field.
    Type: Application
    Filed: December 13, 2001
    Publication date: October 3, 2002
    Inventors: Kurt Aigner, Alfred Binder, Gerhard Kroupa, Martin Matschitsch, Gerhard Pucher, Werner Scherf, Josef Unterweger, Stefan Zerlauth