Patents by Inventor Johannes Schreuder

Johannes Schreuder 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).

  • Wideband antena device with extended ground plane in a portable device
    Publication number: 20060109182
    Abstract: An antenna device for a portable device has an antenna loop of conducting material to be connected to radio circuitry in the portable device. The antenna loop is positioned opposite a ground plane of a PCB. Also, the antenna device also comprises at least one battery, which is positioned in the extension of a first side of the PCB, and acts as an extension of the ground plane of the PCB.
    Type: Application
    Filed: June 11, 2003
    Publication date: May 25, 2006
    Inventors: Johan Anton Rosenberg, Johannes Schreuder, Tjapko Uildriks
  • Device for determining a characteristic point in the cardiac cycle
    Publication number: 20050197584
    Abstract: The present invention relates to a device for determining a characteristic point in the cardiac cycle that comprises means for calculating the curve of the blood flow rate D(t) in the aorta from the curve of the arterial blood pressure signal P(t) and determining from the curve of the blood flow rate D(t) in each cardiac cycle the time at which an incisura point lies. The device can be used for activating an intra-aortal balloon pump (IABP).
    Type: Application
    Filed: March 1, 2005
    Publication date: September 8, 2005
    Inventors: Sebastiaan Adrianus Hoeksel, Johannes Schreuder, Josef Jansen