Patents Assigned to Comet AG
  • Patent number: 12206372
    Abstract: A radio-frequency generator, including a power amplifier module including a power amplifier, a pickup module connected to an output of the power amplifier to generate a pickup signal, and an output configured to be connected to the respective output of the amplifier and configured to output a radio-frequency output signal. The radio-frequency generator includes a measurement module configured to receive the pickup signal and to generate a measurement signal based on the one pickup signal; and a radio-frequency signal generation module configured to generate two or more carrier signals of different frequency, and to provide a drive signal as input to the power amplifier module, and a regulation module configured to receive the measurement signal, and to regulate the power of the radio-frequency output signal based on the measurement signal.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: January 21, 2025
    Assignee: COMET AG
    Inventors: Daniel Gruner, André Grede, Nikolai Schwerg, Anton Labanc, Manuel vor dem Brocke, Roland Schlierf
  • Publication number: 20250022662
    Abstract: A vacuum variable capacitor includes a vacuum sealed enclosure to contain a vacuum dielectric medium, wherein the enclosure includes a first plate and a second plate, the first plate and the second plate being separated by an electrically insulating element, a fixed electrode attached inside the enclosure to the first plate and a movable electrode attached to a movable plate, wherein the movable plate is attached inside the enclosure to the second plate by at least one vacuum bellows, wherein the vacuum capacitor includes a mechanical drive system for displacing, in particular translating, the movable plate relative to the first plate so as to vary the capacitance of the vacuum capacitor, wherein the mechanical drive system includes a ball screw arranged to drive the movable plate and wherein the mechanical drive system includes outside of the vacuum sealed enclosure a limiting element limiting the maximum distance between the first plate and the movable plate and wherein the drive system includes a nut attac
    Type: Application
    Filed: October 3, 2022
    Publication date: January 16, 2025
    Applicant: COMET AG
    Inventors: Mark MILDNER, Marco FASEL
  • Patent number: 12132454
    Abstract: A radiofrequency, RF, power amplifier, including at least one field-effect transistor, FET, wherein a source terminal of the at least one FET is connected to ground. At least one diode is included, wherein a cathode of the at least one diode is connected to a drain terminal of the at least one FET and an anode of the at least one diode is connected to ground. An output network is connected to the drain terminal of the at least one FET. An input network is connected to a gate terminal of the at least one FET.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: October 29, 2024
    Assignee: COMET AG
    Inventors: Daniel Gruner, Andreas Hartmann, Philippe Dennler, Markus Reiff, André Grede, Anton Labanc
  • Patent number: 12126347
    Abstract: A control unit for generating a plurality of synchronized radio frequency (RF) output signals (RFout,i) each having a respective output frequency (fi), phase (?i), and amplitude (Ai), including a signal comparator configured to compare a reference signal having a reference frequency (fref) and a reference phase (?ref) with a feedback signal having a feedback frequency (fPLL) and a feedback phase (?PLL), and configured to generate an error signal representative of a difference between the reference signal and the feedback signal; and a data processing unit receiving as an input signal the error signal generated by the signal comparator, and outputting a plurality of waveform tuning signals (FTWPLL, FTWi) as a function of the error signal; wherein a plurality of waveform generators (DDSPLL, DDSi) each receiving at least one of the plurality of waveform tuning signals (FTWPLL, FTWi) output by the data processing unit, wherein each waveform generator (DDSPLL, DDSi) generates a time-dependent amplitude signal (
    Type: Grant
    Filed: August 3, 2021
    Date of Patent: October 22, 2024
    Assignee: COMET AG
    Inventors: Manuel vor dem Brocke, Roland Schlierf, André Grede, Daniel Gruner, Anton Labanc
  • Patent number: 12046440
    Abstract: An X-ray target assembly includes a cylindrical base and a cylindrical multilayered X-ray target that includes at least a heat transfer layer, an X-ray source layer and an adhesion layer provided between the heat transfer layer and the X-ray source layer, wherein the X-ray target is oriented such that the heat transfer layer is closest to the base, wherein the X-ray target is placed on top of a cylindrical carrying element, wherein the in-plane coefficient of thermal expansion of each of the heat transfer layer, the X-ray source layer, the adhesion layer and of the material of the carrying element is different, wherein the in-plane coefficient of thermal expansion of the heat transfer layer is the lowest and that of the material of the carrying element the highest.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: July 23, 2024
    Assignee: COMET AG
    Inventors: Markus Bollenbach, Phillipe Koelliker
  • Patent number: 12037354
    Abstract: The present disclosure relates to compounds of Formula (P) or (II?-0): (Formulae (I?), (II?-0)), and pharmaceutically acceptable salts or solvates thereof. The present disclosure also relates to pharmaceutical compositions comprising the compounds and therapeutic and diagnostic uses of the compounds and pharmaceutical compositions.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: July 16, 2024
    Assignee: VectivBio Comet AG
    Inventors: Arthur George Taveras, Enej Kuscer, Angelina Roberta Sekirnik, Dharini Shah, Mercedes Valls Seron
  • Patent number: 11990281
    Abstract: The present invention relates to an electrode unit (10, 20) for an electric vacuum capacitor comprising a band-shaped capacitor plate (11, 21) with a height H, wherein the band-shaped capacitor plate (11, 21) is wound in a spiral with a maximum diameter Dmax and a constant distance between successive turns, wherein the band-shaped capacitor plate (11, 21) comprises a first longitudinal edge (11a, 21a) attached to a supporting part (12) and a second longitudinal edge (11b, 21b), the second longitudinal edge (11b, 21b) being free, wherein at the outer extremity of the spiral, the first longitudinal edge (11a, 21a) and the second longitudinal edge (11b, 21b) are connected by an inclined edge (11c, 21c) such that the first longitudinal edge (11a, 21a) is longer than the second longitudinal edge (11b, 21b), wherein the inclined edge (11c, 21c) forms with the longitudinal axis (B) of the band-shaped capacitor plate (11, 21) an angle ? less than or equal to an angle ?max=(45°·?/180°).
    Type: Grant
    Filed: June 17, 2021
    Date of Patent: May 21, 2024
    Assignee: COMET AG
    Inventors: Marco Fasel, Mark Mildner, Timothy Weber, Janina Bischof
  • Publication number: 20240098865
    Abstract: A high-voltage generator device is provided comprising an electric field shaper for shaping an electric field, in particular for a high-voltage generator. The electric field shaper comprising at least one field shaping unit which has a field shaping element. The field shaping element comprises a non-conductive body, in particular a plastic body, and an electrically conductive coating that is arranged on the non-conductive body.
    Type: Application
    Filed: September 21, 2023
    Publication date: March 21, 2024
    Applicant: Comet AG
    Inventors: Aaron Reichert, Johannes Zenner, Michael Freiburghaus
  • Patent number: 11901160
    Abstract: A radio-frequency (RF) power variable capacitor capable of operating at, at least, 50 watts in the MHz range. The capacitor has a composite HDK-NDK ceramic dielectric. The HDK (high dielectric constant) component comprises an active matrix of barium strontium titanate, for example. Acoustic resonances are reduced or eliminated by the addition of a metal or metalloid oxide such as magnesium borate (NDK—low dielectric constant), which acts as an acoustic resonance reduction agent (ARRA) in the RF power domain. The acoustic resonances which previously occurred under bias voltage 500 V or 1100 V in prior art RF power variable capacitors are eliminated by the addition of the ARRA.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: February 13, 2024
    Assignee: Comet AG
    Inventors: Thomas Fink, Kevin Häuser, Holger Maune, Daniel Kienemund, Joachim Binder, Rolf Jakoby, Nicole Bohn
  • Patent number: 11894209
    Abstract: A component part in a vacuum area of an X-ray tube with an opening through which an electron beam is guided. The component part includes a base body made of a first material, wherein the first material is a metal. Arranged on a surface forming the opening is a second material having an atomic number which is smaller than an atomic number of the first material. A target support is attached to an end of the component part. The target support supports a target which is aligned with a lens diaphragm formed at the end of the component part. The target support has a base body made of a first material which is a metal, and a second material formed on a surface of the base body that is selectively exposed to the electron beam and which extends between the target and the lens diaphragm.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: February 6, 2024
    Assignee: COMET AG
    Inventor: André Schu
  • Patent number: 11777508
    Abstract: A device for synchronizing a periodic high frequency power signal (18) and an external reference signal (10). The device comprises a phase control circuit (100) and a digital oscillator circuit (130). The digital oscillator circuit (130) is connected to the phase control circuit (100). The digital oscillator circuit (130) comprises means for generating the periodic high frequency power signal (18) dependent on the control signal from the phase control circuit. The phase control circuit (100) is configured to determine a phase difference of the periodic high frequency power signal (18) and the external reference signal (10).
    Type: Grant
    Filed: March 4, 2022
    Date of Patent: October 3, 2023
    Assignee: COMET AG
    Inventors: Manuel vor dem Brocke, Roland Schlierf, André Grede, Daniel Gruner
  • Patent number: 11770892
    Abstract: The high-frequency amplifier assembly for a high-frequency generator, in particular for a high-frequency generator for operating a plasma generator, is provided with a signal generator for generating a high-frequency signal; a first amplifier transistor for amplifying the signal generated by the signal generator; an output terminal for outputting the amplified signal to an external load; an input network arranged between the signal generator and the first amplifier transistor for providing the high-frequency signal at the input of the amplifier transistor; an output network arranged between the amplifier transistor and the external load for providing a desired load impedance for the amplifier transistor; and an electronic voltage-limiting assembly arranged at the output terminal for limiting the output voltage at the output terminal.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: September 26, 2023
    Assignee: COMET AG
    Inventors: Anton Labanc, Daniel Gruner
  • Patent number: 11705314
    Abstract: Provided is a generator including a power amplifier, at least one sampler, an RF output, a signal generator, a controller including a digital control portion and an analogue control portion, an analogue feedback path between the at least one sampler and the controller enabling an analogue signal representation of a signal to be provided to the controller, and a digital feedback path between the at least one sampler and the controller enabling a digital signal representation of the signal to be provided to the controller. The controller is configured to adjust the RF signal at the RF output from a first state into a second state based on the analogue signal representation and/or the digital signal representation.
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: July 18, 2023
    Assignee: COMET AG
    Inventors: Anton Labanc, Daniel Gruner, André Grede
  • Patent number: 11621125
    Abstract: A variable vacuum capacitor is described in which oil inside the main bellows (21) is pumped through the bellows and through the oil circuit (8) of a heat exchanger by a pump (15). Water passes through coolant channels (6) of the heat exchanger, from inlet (7) to outlet (7?). The extendable capacitor drive shaft (14) is hollow and serves as a conduit, conveying the oil to the bottom of the (bellows 21), thereby ensuring a full circulation of the oil right through the bellows and then through the heat exchanger. Pump drive means (9) may be a gerotor hydraulic motor, coupled to a gerotor oil pump (15) via magnetic coupling (22). Pumping heat transfer fluid (oil) through the bellows allows the capacitor to operate at significantly higher currents and/or lower temperatures, and significantly extends the life of the device.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: April 4, 2023
    Assignee: COMET AG
    Inventors: Thierry Altenhoven, Walter Bigler, Timothy Albert Weber, Mark Mildner
  • Publication number: 20230046211
    Abstract: An X-ray target assembly includes a cylindrical base and a cylindrical multilayered X-ray target that includes at least a heat transfer layer, an X-ray source layer and an adhesion layer provided between the heat transfer layer and the X-ray source layer , wherein the X-ray target is oriented such that the heat transfer layer is closest to the base, wherein the X-ray target is placed on top of a cylindrical carrying element, wherein the in-plane coefficient of thermal expansion of each of the heat transfer layer, the X-ray source layer, the adhesion layer and of the material of the carrying element is different, wherein the in-plane coefficient of thermal expansion of the heat transfer layer is the lowest and that of the material of the carrying element the highest.
    Type: Application
    Filed: December 27, 2019
    Publication date: February 16, 2023
    Applicant: COMET AG
    Inventors: Markus BOLLENBACH, Phillipe KOELLIKER
  • Patent number: 11552657
    Abstract: The invention relates to a directional coupler comprising a non-straight main conductor line for receiving a high power signal and at least one coupling element. The main conductor line is arranged to run in a plane P0. The at least one coupling element is arranged sectionally parallel to the main conductor line. Further, the invention relates to a method for measuring RF voltage and/or RF power using a directional coupler. The method comprises the steps of combining the measured signals of the directional coupler and the measured voltage and current values of the VI sensor unit. In case, one of the measured signals has a low or zero level the sensitivity of the measuring of RF voltage and/or RF power is increased.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: January 10, 2023
    Assignee: COMET AG PLASMA CONTROL TECHNOLOGIES
    Inventors: Nikolai Schwerg, André Grede
  • Patent number: 11516946
    Abstract: Provided is a generator that includes a housing, a high-power circuit including a power amplifier, and a low-power circuit. An air flow guidance plate divides the housing into at least two compartments including a high-power compartment and a low-power compartment. The high-power circuit is disposed within the high-power compartment and the low-power circuit is disposed within the low-power compartment.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: November 29, 2022
    Assignee: COMET AG
    Inventor: Andreas Scherler
  • Patent number: 11496059
    Abstract: A variable voltage generator circuit is described for generating, from a substantially constant supply voltage VS, a variable high-voltage control voltage VC for a variable power capacitor (1) having a variable-permittivity dielectric. The control voltage generator circuit comprises a top-up circuit (10) for maintaining the voltage VCin on an input capacitor (12) at least at supply voltage VS, and a bidirectional DC-DC converter circuit (20) having a variable voltage conversion factor G controlled by control input signal (27). The bidirectional DC-DC converter (20) is arranged to convert voltage, at the voltage conversion factor G, between the input capacitor voltage VCin and the output voltage VC. When VC<G×VCin, the DC-DC converter circuit (20) uses charge stored in the input capacitor (12) to charge the capacitive load (1). When VC>G×VCin, the DC-DC converter circuit (20) uses charge stored in the load capacitance (1) to charge the input capacitor (12).
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: November 8, 2022
    Assignee: COMET AG
    Inventors: Thomas Fink, Ralf Negele
  • Patent number: 11489531
    Abstract: The invention relates to a device for synchronizing a periodic high frequency power signal (18) and an external reference signal (10). The device comprises a phase control circuit (100) and a digital oscillator circuit (130). The digital oscillator circuit (130) is connected to the phase control circuit (100). The digital oscillator circuit (130) comprises means for generating the periodic high frequency power signal (18) dependent on the control signal from the phase control circuit. The phase control circuit (100) is configured to determine a phase difference of the periodic high frequency power signal (18) and the external reference signal (10).
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: November 1, 2022
    Assignee: COMET AG
    Inventors: Manuel vor dem Brocke, Roland Schlierf, André Grede, Daniel Gruner
  • Patent number: 11488785
    Abstract: The present invention relates to a vacuum capacitor (1, 30) comprising an enclosure (9) to contain a vacuum dielectric medium, a first electrode (12) and a second electrode (13) separated by said vacuum dielectric medium, the enclosure (9) comprising a first conductive collar (2) in electrical contact with the first electrode (12) and a second conductive collar (3) in electrical contact with the second electrode (13), the first conductive collar (2) and the second conductive collar (3) being separated by an insulating element (4) of the enclosure (9), wherein the enclosure (9) exhibits at least one protruding edge (6), said protruding edge (6) being in electrical contact with the closest of the first conductive collar (2) or the second conductive collar (3), wherein the vacuum capacitor (1, 30) comprises at least one protection means (7, 37) covering on the outside of the vacuum enclosure the protruding edge (6), wherein the protection means (7, 37) is made at least partially of an elastomer, wherein at least
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: November 1, 2022
    Assignee: COMET AG
    Inventor: Walter Bigler