Patents by Inventor Alexander BOHNHORST

Alexander BOHNHORST 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).

  • Patent number: 11448615
    Abstract: The invention relates to an ion transport device which is designed to transport ions by means of an electric field. The ion transport device has an ion transport channel in which an ion transport chamber is formed. In order to generate the electric field, the ion transport device has a plurality of field generating electrodes which are arranged one behind the other along the length of the ion transport channel in order to move ions through the ion transport chamber in a transport direction. The invention additionally relates to an ion mobility spectrometer and to a mass spectrometer.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: September 20, 2022
    Assignee: GOTTFRIED WILHELM LEIBNIZ UNIVERSITAET HANNOVER
    Inventors: Stefan Zimmermann, Ansgar Kirk, Alexander Bohnhorst
  • Patent number: 11293899
    Abstract: The invention relates to an ion mobility spectrometer which has at least a first drift chamber and a first switchable ion gate for the controlled transfer of ions into the first drift chamber, wherein:—the first ion gate is designed as a field switching ion gate having at least a first counter electrode and a first injection electrode; wherein—a first ionization chamber is formed between the first counter electrode and the first injection electrode, into which first ionization chamber ions to be analyzed by ion mobility spectrometry can be fed from an ionization source. The invention also relates to an ion mobility spectrometer which has at least a first drift chamber and a first switchable ion gate for the controlled transfer of ions into the first drift chamber and a second drift chamber separated from the first drift chamber and a second switchable ion gate for the controlled transfer of ions into the second drift chamber.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: April 5, 2022
    Assignee: GOTTFRIED WILHELM LEIBNIZ UNIVERSITAT HANNOVER
    Inventors: Stefan Zimmermann, Ansgar Kirk, Martin Lippmann, Alexander Bohnhorst
  • Publication number: 20210239651
    Abstract: The invention relates to an ion transport device which is designed to transport ions by means of an electric field. The ion transport device has an ion transport channel in which an ion transport chamber is formed. In order to generate the electric field, the ion transport device has a plurality of field generating electrodes which are arranged one behind the other along the length of the ion transport channel in order to move ions through the ion transport chamber in a transport direction. The invention additionally relates to an ion mobility spectrometer and to a mass spectrometer.
    Type: Application
    Filed: May 29, 2019
    Publication date: August 5, 2021
    Inventors: Stefan ZIMMERMAN, Ansgar KIRK, Alexander BOHNHORST
  • Publication number: 20210164940
    Abstract: The invention relates to an ion mobility spectrometer which has at least a first drift chamber and a first switchable ion gate for the controlled transfer of ions into the first drift chamber, wherein: —the first ion gate is designed as a field switching ion gate having at least a first counter electrode and a first injection electrode; wherein—a first ionization chamber is formed between the first counter electrode and the first injection electrode, into which first ionization chamber ions to be analyzed by ion mobility spectrometry can be fed from an ionization source. The invention also relates to an ion mobility spectrometer which has at least a first drift chamber and a first switchable ion gate for the controlled transfer of ions into the first drift chamber and a second drift chamber separated from the first drift chamber and a second switchable ion gate for the controlled transfer of ions into the second drift chamber.
    Type: Application
    Filed: April 3, 2019
    Publication date: June 3, 2021
    Inventors: Stefan ZIMMERMANN, Ansgar KIRK, Martin LIPPMANN, Alexander BOHNHORST