Patents by Inventor Johannes Erhard

Johannes Erhard 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).

  • PROJECTION-DOMAIN MATERIAL DECOMPOSITION FOR SPECTRAL IMAGING
    Publication number: 20240127500
    Abstract: The present invention relates to a method (1), resp. a device, system and computer-program product, for material decomposition of spectral imaging projection data. The method comprises receiving (2) projection data acquired by a spectral imaging system and reducing (3) noise in the projection data by combining corresponding spectral values for different projection rays to obtain noise-reduced projection data. The method comprises applying (6) a first projection-domain material decomposition algorithm to the noise-reduced projection data to obtain a first set of material path length estimates, and applying (7) a second projection-domain material decomposition algorithm to the projection data to obtain a second set of material path length estimates. The second projection-domain material decomposition algorithm comprises an optimization that penalizes a deviation between the second set of material path length estimates being optimized and the first set of material path length estimates.
    Type: Application
    Filed: February 15, 2022
    Publication date: April 18, 2024
    Inventors: BERNHARD JOHANNES BRENDEL, KLAUS ALFRED ERHARD, CLAAS BONTUS, ARTUR SOSSIN, AXEL THRAN, HEINER DAERR
  • Method and device for cooling an electric machine
    Patent number: 8288901
    Abstract: In a slowly-running electric machine, such as a bulb turbine generator, air circulation for cooling is supplied by externally driven fans. A cooling device is mounted on the pressure or the suction side of the fan and the rotor and the stator are mounted on the suction side of the fan.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: October 16, 2012
    Assignee: VA Tech Hydro GmbH
    Inventors: Walter Harb, Johannes Erhard, Ernst Farnleitner
  • METHOD AND DEVICE FOR COOLING AN ELECTRIC MACHINE
    Publication number: 20120025641
    Abstract: In a slowly-running electric machine, such as a bulb turbine generator, air circulation for cooling is supplied by externally driven fans. A cooling device is mounted on the pressure or the suction side of the fan and the rotor and the stator are mounted on the suction side of the fan.
    Type: Application
    Filed: September 15, 2011
    Publication date: February 2, 2012
    Applicant: VA TECH HYDRO GMBH
    Inventors: Walter Harb, Johannes Erhard, Ernst Farnleitner
  • Method and device for cooling an electric machine
    Patent number: 8035261
    Abstract: In a slowly-running electric machine, such as a bulb turbine generator, air circulation for cooling is supplied by externally driven fans. A cooling device is mounted on the pressure or the suction side of the fan and the rotor and the stator are mounted on the suction side of the fan.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: October 11, 2011
    Assignee: VA Tech Hydro GmbH
    Inventors: Walter Harb, Johannes Erhard, Ernst Farnleitner
  • METHOD AND DEVICE FOR COOLING AN ELECTRIC MACHINE
    Publication number: 20100026110
    Abstract: In a slowly-running electric machine, such as a bulb turbine generator, air circulation for cooling is supplied by externally driven fans. A cooling device is mounted on the pressure or the suction side of the fan and the rotor and the stator are mounted on the suction side of the fan.
    Type: Application
    Filed: June 20, 2007
    Publication date: February 4, 2010
    Applicant: VA TECH HYDRO GMBH
    Inventors: Walter Harb, Johannes Erhard, Ernst Farnleitner