Patents by Inventor Ansgar KIRK
Ansgar KIRK 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: 20220390414Abstract: The invention relates to an ion mobility spectrometer (1) having an ionization chamber (13), with at least one ionization source (3) and at least one drift chamber (14) arranged downstream of the ionization chamber (13) in a desired drift direction (D) of the ions, wherein the ionization chamber (13) is connected to a feed duct (4) through which a sample gas to be analysed can be fed into the ionization chamber (13), characterized in that the ion mobility spectrometer (1) has a discharge duct (5) separate from the feed duct (4), which discharge duct is connected to the ionization chamber (13) and through which the sample gas can be discharged from the ionization chamber (13), wherein a) the ion mobility spectrometer (1) is configured to operate the ionization chamber (13) substantially field-free, at least during an ionization phase, and, in an injection phase, to move ions by means of an electric field out of the ionization chamber (13) into the drift chamber (14) and/or b) the ionization source (3) is desigType: ApplicationFiled: September 23, 2020Publication date: December 8, 2022Inventors: Stefan ZIMMERMANN, Ansgar KIRK
-
Publication number: 20220376660Abstract: The invention relates to an electrical circuit in the form of a transimpedance amplifier stage, and to a method for operating this circuit. The invention furthermore relates to a circuit containing at least one signal amplifier that has at least one output connection, at least one input connection or at least one pair of differential input connections and at least two voltage supply connections, one of which may also be an earth or ground connection, wherein the signal amplifier has at least one additional connection that is connected internally to at least one of the input connections or the input connection via at least one further component, for example a diode.Type: ApplicationFiled: October 9, 2019Publication date: November 24, 2022Inventors: Ansgar KIRK, Stefan Zimmermann, Cornelius WENDT
-
Patent number: 11448615Abstract: 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: GrantFiled: May 29, 2019Date of Patent: September 20, 2022Assignee: GOTTFRIED WILHELM LEIBNIZ UNIVERSITAET HANNOVERInventors: Stefan Zimmermann, Ansgar Kirk, Alexander Bohnhorst
-
Patent number: 11366078Abstract: 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: GrantFiled: April 3, 2019Date of Patent: June 21, 2022Assignee: GOTTFRIED WILHELM LEIBNIZ UNIVERSITAET HANNOVERInventors: Stefan Zimmermann, Ansgar Kirk, André Ahrens, Moritz Hitzemann, Martin Lippmann
-
Patent number: 11293899Abstract: 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: GrantFiled: April 3, 2019Date of Patent: April 5, 2022Assignee: GOTTFRIED WILHELM LEIBNIZ UNIVERSITAT HANNOVERInventors: Stefan Zimmermann, Ansgar Kirk, Martin Lippmann, Alexander Bohnhorst
-
Publication number: 20210239651Abstract: 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: ApplicationFiled: May 29, 2019Publication date: August 5, 2021Inventors: Stefan ZIMMERMAN, Ansgar KIRK, Alexander BOHNHORST
-
Publication number: 20210164939Abstract: 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: ApplicationFiled: April 3, 2019Publication date: June 3, 2021Applicant: Gottfried Wilhelm Leibniz Universität HannoverInventors: Stefan ZIMMERMANN, Ansgar KIRK, André AHRENS, Moritz HITZEMANN, Martin LIPPMANN
-
Publication number: 20210164940Abstract: 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: ApplicationFiled: April 3, 2019Publication date: June 3, 2021Inventors: Stefan ZIMMERMANN, Ansgar KIRK, Martin LIPPMANN, Alexander BOHNHORST
-
Publication number: 20210123887Abstract: The invention relates to an analysis device for analyzing substances using ion-mobility spectrometry.Type: ApplicationFiled: May 22, 2019Publication date: April 29, 2021Inventors: Stefan ZIMMERMANN, Ansgar KIRK, Christian-Robert RADDATZ, Christian THOBEN
-
Patent number: 10741373Abstract: The invention relates to a method for operating an ion gate having a first, a second, and a third electrode which are arranged one after the other in an intended drifting direction of ions to be influenced by the ion gate, in such a way that the second electrode is arranged after the first electrode and the third electrode is arranged after the second electrode in the drift direction. The ion gate can be switched between a closed state, in which ions cannot drift through the ion gate in the intended drifting direction, and an open state, in which ions can drift through the ion gate in the intended drifting direction. This is accomplished by applying potentials that alternate over time to one or more of the electrodes. In a switching cycle of the ion gate, which comprises the open state and the closed state of the ion gate, two different closed states of the ion gate are produced. In a first closed state, the ion gate is closed by applying a first potential between the second and third electrodes.Type: GrantFiled: August 9, 2019Date of Patent: August 11, 2020Assignee: GOTTFRIED WILHELM LEIBNIZ UNIVERSITÄT HANNOVERInventors: Stefan Zimmermann, Ansgar Kirk
-
Publication number: 20190362956Abstract: The invention relates to a method for operating an ion gate having a first, a second, and a third electrode which are arranged one after the other in an intended drifting direction of ions to be influenced by the ion gate, in such a way that the second electrode is arranged after the first electrode and the third electrode is arranged after the second electrode in the drift direction. The ion gate can be switched between a closed state, in which ions cannot drift through the ion gate in the intended drifting direction, and an open state, in which ions can drift through the ion gate in the intended drifting direction. This is accomplished by applying potentials that alternate over time to one or more of the electrodes. In a switching cycle of the ion gate, which comprises the open state and the closed state of the ion gate, two different closed states of the ion gate are produced. In a first closed state, the ion gate is closed by applying a first potential between the second and third electrodes.Type: ApplicationFiled: August 9, 2019Publication date: November 28, 2019Inventors: Stefan ZIMMERMANN, Ansgar KIRK
-
Patent number: 10408791Abstract: The invention relates to a method for operating an ion gate having at least a first, a second, and a third electrode, which are arranged one after the other in an intended drifting direction of ions to be influenced by the ion gate, in such a way that the second electrode is arranged after the first electrode and the third electrode is arranged after the second electrode in the drifting direction, wherein the ion gate can be switched between a closed state, in which ions cannot drift through the ion gate in the intended drifting direction, and an open state, in which ions can drift through the ion gate in the intended drifting direction, by applying potentials that alternate over time to one or more of the electrodes mentioned above, wherein, in a switching cycle of the ion gate, which comprises the open state and the closed state of the ion gate, two different closed states of the ion gate are produced in that, in a first closed state, the ion gate is closed by applying a first potential difference between tType: GrantFiled: August 2, 2016Date of Patent: September 10, 2019Assignee: GOTTFRIED WILELM LEIBNIZ UNIVERSITAET HANNOVERInventors: Stefan Zimmermann, Ansgar Kirk
-
Publication number: 20180224401Abstract: The invention relates to a method for operating an ion gate having at least a first, a second, and a third electrode, which are arranged one after the other in an intended drifting direction of ions to be influenced by the ion gate, in such a way that the second electrode is arranged after the first electrode and the third electrode is arranged after the second electrode in the drifting direction, wherein the ion gate can be switched between a closed state, in which ions cannot drift through the ion gate in the intended drifting direction, and an open state, in which ions can drift through the ion gate in the intended drifting direction, by applying potentials that alternate over time to one or more of the electrodes mentioned above, wherein, in a switching cycle of the ion gate, which comprises the open state and the closed state of the ion gate, two different closed states of the ion gate are produced in that, in a first closed state, the ion gate is closed by applying a first potential difference between tType: ApplicationFiled: August 2, 2016Publication date: August 9, 2018Inventors: Stefan Zimmermann, Ansgar Kirk
-
Patent number: 9759684Abstract: A gas analyzing device including at least one ion mobility spectrometer is provided. The gas analyzing device also includes an energy supply device interacting with a reaction chamber of the ion mobility spectrometer which is designed to manipulate the density of free reactant ions in the reaction chamber by supplying energy. A method for analyzing gas by means of a gas analyzing device according to the ion mobility spectrometry is also provided.Type: GrantFiled: December 10, 2014Date of Patent: September 12, 2017Assignee: Gottfried Wilhelm Leibniz Universitaet HannoverInventors: Stefan Zimmermann, Philipp Cochems, Jens Langejürgen, Ansgar Kirk
-
Publication number: 20160305909Abstract: The invention relates to a gas analyzing device (1) which comprises at least one ion mobility spectrometer (2). Said gas analyzing device (1) also comprises an energy supply device (50) interacting with a reaction chamber (5) of the ion mobility spectrometer (2) which is designed to manipulate the density of free reactant ions in the reaction chamber (5) by supplying energy. The invention also relates to a method for analyzing gas by means of a gas analyzing device according to the ion mobility spectrometry.Type: ApplicationFiled: December 10, 2014Publication date: October 20, 2016Inventors: Stefan ZIMMERMANN, Philipp COCHEMS, Jens LANGEJÜRGEN, Ansgar KIRK