Patents by Inventor Jacobus Maarten Schippers

Jacobus Maarten Schippers 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).

  • Publication number: 20190184201
    Abstract: A system for particle beam therapy has an adjustable gantry for beam delivery to a patient site. The gantry has a beam coupling section, a first beam bending section with beam deflection and/or focusing magnets. A beam transport section receiving the particle beam from the first beam bending section and guiding the particle beam to a second beam bending section. The beam exits at a window of a beam nozzle. A patient table/chair is rotatable in the horizontal plane or in a plane being parallel to the horizontal plane and optionally being adjustable vertically. The gantry is supported by a tilting mechanism allowing the gantry to be tilted vertically by an angle ?1?[?90°; +90°]. A rotation mechanism is disposed in a way that the second beam bending section and the beam nozzle are rotatable by an angle ?2?[?180°; +180°] around a direction given by the angle ?1.
    Type: Application
    Filed: June 20, 2017
    Publication date: June 20, 2019
    Applicant: Paul Scherrer Institut
    Inventors: JACOBUS MAARTEN SCHIPPERS, ALEXANDER GERBERSHAGEN
  • Publication number: 20180369612
    Abstract: A movable gantry for delivery of a particle beam using beam scanning technique contains an inlet section for an accelerated particle beam having quadrupole magnets, first and second bending sections having dipole and quadrupole magnets for beam correction, a transfer section having quadrupole magnets for beam correction and a degrader and a last beam bending section having separate and/or combined dipole/quadrupole/higher order multipole magnets forming an achromatic section. All the magnets of the achromatic last bending section are located downstream of the degrader. Any dispersion in this achromatic last bending section is suppressed. A scanning section having two separate or one combined fast deflection magnets that deflect the beam at the iso-center in a direction perpendicular to the beam direction to perform lateral scanning is provided. A beam nozzle section is provided and has a beam nozzle.
    Type: Application
    Filed: October 28, 2016
    Publication date: December 27, 2018
    Inventors: ALEXANDER GERBERSHAGEN, DAVID MEER, JACOBUS MAARTEN SCHIPPERS
  • Publication number: 20180277277
    Abstract: A degrader for use in the field of the application of a particle beam has excellent degrading capabilities and, for the same energy loss in the degrader, a lower emittance increase than currently used materials, without generating a strong neutron flux and without having severe toxic characteristics. The degrader includes degrading active material composed of Boron Carbide B4C. The degrader has an amount of multiple scattering that is lower than for graphite for the same energy loss. The use of B4C increases the transmission by typically 35% for the beam degradation to low energies, which is a significant and useful amount of beam intensity increase in particle therapy. The B4C material does not become more radioactive than graphite, so that there will be no additional problems at service activities. Further, B4C when used as a degrading active material does not have severe toxic properties.
    Type: Application
    Filed: May 29, 2018
    Publication date: September 27, 2018
    Inventors: ALEXANDER GERBERSHAGEN, JACOBUS MAARTEN SCHIPPERS
  • Patent number: 8704201
    Abstract: An energy filter allows, particularly at lower beam energies, a determined spread of the beam energies in order to preserve the beam edges and to spread the Bragg peak at each individual beam energy. The energy filter behaves similarly to a ridge filter and spreads out the Bragg peak of a low energy proton beam (70-100 MeV) so that energy modulation of the beam can be done with steps of 5 mm in one go over the full range of 235-70 MeV. Due to its mechanical flexibility, the energy filter can be placed on the skin of the patient which minimizes the effect of scattering in the filter due to the short distance behind a layer of a plurality of metal particles within a flexible soft plastic sheet to the skin of the patient.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: April 22, 2014
    Assignee: Paul Scherrer Institut
    Inventor: Jacobus Maarten Schippers
  • Publication number: 20130137915
    Abstract: An energy filter allows, particularly at lower beam energies, a determined spread of the beam energies in order to preserve the beam edges and to spread the Bragg peak at each individual beam energy. The energy filter behaves similarly to a ridge filter and spreads out the Bragg peak of a low energy proton beam (70-100 MeV) so that energy modulation of the beam can be done with steps of 5 mm in one go over the full range of 235-70 MeV. Due to its mechanical flexibility, the energy filter can be placed on the skin of the patient which minimizes the effect of scattering in the filter due to the short distance behind a layer of a plurality of metal particles within a flexible soft plastic sheet to the skin of the patient.
    Type: Application
    Filed: November 16, 2010
    Publication date: May 30, 2013
    Applicant: PAUL SCHERRER INSTITUT
    Inventor: Jacobus Maarten Schippers