Patents by Inventor Roch Andrzejewski

Roch Andrzejewski 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: 20210063351
    Abstract: A device for performing field asymmetric waveform ion mobility spectrometry, “FAIMS” including first and second segmented planar electrodes, each electrode including three or more segments and extending in a direction parallel to an analytical axis of the device, the first and second segmented electrodes are separated from each other to provide an analytical gap therebetween; and propelling means for propelling ions through the analytical gap in a direction parallel to the analytical axis. The device is configured to operate in: a FAIMS mode in which a power supply applies voltage waveforms to the segments to produce an asymmetric time dependent electric field in the analytical gap for FAIMS analysis of ions propelled through the analytical gap; and a transparent mode in which the power supply applies voltage waveforms to the to produce a confining electric field in the analytical gap for focussing ions towards the longitudinal axis.
    Type: Application
    Filed: July 31, 2020
    Publication date: March 4, 2021
    Applicant: SHIMADZU CORPORATION
    Inventors: Roger GILES, Roch ANDRZEJEWSKI
  • Publication number: 20210063350
    Abstract: A device for performing field asymmetric waveform ion mobility spectrometry, “FAIMS”, including a power supply that applies voltage waveforms to first and second segmented planar electrodes to produce an asymmetric time dependent electric field in an analytical gap for FAIMS analysis of ions. The voltage waveforms are configured such that the asymmetric time dependent electric field has curved contours of equal field strength when viewed in a plane perpendicular to the analytical axis so as to focus ions having different differential mobilities towards different spatial domains, each spatial domain extending along a respective curved contour of equal field strength when viewed in a plane perpendicular to the analytical axis. A focus controller is configured to allow a user to change the curvature of the contours of equal field strength so as to change the strength of focussing provided by the asymmetric time dependent electric field.
    Type: Application
    Filed: July 30, 2020
    Publication date: March 4, 2021
    Applicant: SHIMADZU CORPORATION
    Inventors: Roger GILES, Roch ANDRZEJEWSKI
  • Publication number: 20210066061
    Abstract: A device for performing field asymmetric waveform ion mobility spectrometry, “FAIMS,” including first and second segmented planar electrodes, each electrode including three or more segments and extending in a direction parallel to an analytical axis of the device, wherein the first and second segmented electrodes are separated from each other to provide an analytical gap therebetween; and propelling means for propelling ions through the analytical gap in a direction parallel to the analytical axis. The device is configured to operate in a FAIMS mode in which a power supply applies voltage waveforms to the segments to produce an asymmetric time dependent electric field in the analytical gap for FAIMS analysis of ions propelled through the analytical gap. The asymmetric time dependent electric field has substantially straight contours of equal field strength in a plane perpendicular to the analytical axis to focus ions having different differential mobilities towards different spatial domains.
    Type: Application
    Filed: July 29, 2020
    Publication date: March 4, 2021
    Applicant: SHIMADZU CORPORATION
    Inventors: Roger Giles, Roch Andrzejewski
  • Patent number: 10580635
    Abstract: An electromagnet assembly suitable for mass spectrometer comprising one yoke; and two pole pieces; the pole pieces being comprised in a vacuum chamber and being separated from each other by a pole piece gap defining a passage for the charged particles to be deflected; the yoke forming a bridge over the two pole pieces thus defining a magnetic circuit. The electromagnet assembly further comprises one electrical circuit for generating a magnetic flux in the magnetic circuit, the electrical circuit being included in the yoke. The electromagnet assembly is remarkable in that the pole pieces are electrically insulated from the electrical circuit and from the yoke by first electrical insulating means and are electrically insulated from the vacuum chamber.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: March 3, 2020
    Assignee: LUXEMBOURG INSTITUTE OF SCIENCE AND TECHNOLOGY (LIST)
    Inventors: Roch Andrzejewski, Rachid Barrahma, David Dowsett, Tom Wirtz
  • Publication number: 20190057853
    Abstract: An electromagnet assembly suitable for mass spectrometer comprising one yoke; and two pole pieces; the pole pieces being comprised in a vacuum chamber and being separated from each other by a pole piece gap defining a passage for the charged particles to be deflected; the yoke forming a bridge over the two pole pieces thus defining a magnetic circuit. The electromagnet assembly further comprises one electrical circuit for generating a magnetic flux in the magnetic circuit, the electrical circuit being included in the yoke. The electromagnet assembly is remarkable in that the pole pieces are electrically insulated from the electrical circuit and from the yoke by first electrical insulating means and are electrically insulated from the vacuum chamber.
    Type: Application
    Filed: February 7, 2017
    Publication date: February 21, 2019
    Inventors: Roch Andrzejewski, Rachid Barrahma, David Dowsett, Tom Wirtz