Patents by Inventor Alexander Jan Eberhard Raaijmakers

Alexander Jan Eberhard Raaijmakers 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).

  • MRI systems and RF transmit antenna arrangement including a coaxial cable with an electrically conductive core and an electrically conductive outer shield
    Patent number: 11585878
    Abstract: An MRI system RF transmit antenna arrangement 3 including an antenna 5 including a length of coaxial cable 51 with an electrically conductive core 52 and an electrically conductive outer shield 53 through which the core runs, with the core having a feed point 52a arranged for electrical connection to an RF source and at least one break 53a being provided in the electrically conductive outer shield partway along the length of coaxial cable so as to divide the electrically conductive outer shield 53 into at least two axially spaced shield portions such that at least one of the shield portions acts as a radiating element when an RF source is connected to the feed point 52a.
    Type: Grant
    Filed: July 7, 2021
    Date of Patent: February 21, 2023
    Assignees: TESLA DYNAMIC COILS BV, FUTURA COMPOSITES B.V., UMC UTRECHT HOLDING B.V.
    Inventors: Carel Costijn Van Leeuwen, Alexander Jan Eberhard Raaijmakers, Bart Romke Steensma, Martino Borgo, Catalina Sofia Arteaga De Castro, Cornelius Antonius Theodorus Van Den Berg, Dennis Wilhelmus Johannes Klomp
  • MRI SYSTEMS AND RF TRANSMIT ANTENNA ARRANGEMENTS
    Publication number: 20220268863
    Abstract: An MRI system RF transmit antenna arrangement 3 including an antenna 5 including a length of coaxial cable 51 with an electrically conductive core 52 and an electrically conductive outer shield 53 through which the core runs, with the core having a feed point 52a arranged for electrical connection to an RF source and at least one break 53a being provided in the electrically conductive outer shield partway along the length of coaxial cable so as to divide the electrically conductive outer shield 53 into at least two axially spaced shield portions such that at least one of the shield portions acts as a radiating element when an RF source is connected to the feed point 52a.
    Type: Application
    Filed: July 7, 2021
    Publication date: August 25, 2022
    Inventors: Carel Costijn Van Leeuwen, Alexander Jan Eberhard Raaijmakers, Bart Romke Steensma, Martino Borgo, Catalina Sofia Arteaga De Castro, Cornelius Antonius Theodorus Van Den Berg, Dennis Wilhelmus Johannes Klomp
  • ANTENNA ARRAY COMPRISING AT LEAST ONE DIPOLE ANTENNA FOR MAGNETIC RESONANCE IMAGING
    Publication number: 20110316539
    Abstract: An antenna array adapted for magnetic resonance imaging, wherein the antenna array comprises at least one antenna element, wherein each antenna element comprises:-a substrate with a first side and a second side, wherein the substrate comprises a dielectric material,-at least one dipole antenna, wherein the dipole antenna is attached to the second side of the substrate, wherein the dipole antenna comprises a first connection adapted for connecting the dipole antenna to a transmission line.
    Type: Application
    Filed: March 17, 2010
    Publication date: December 29, 2011
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Jan Jacob Wouter Lagendijk, Alexander Jan Eberhard Raaijmakers, Cornelis Antonius Theodorus Van Den Berg, Cecilia Possanzini, Paul Royston Harvey