Patents by Inventor Aleksandr RUSINOV

Aleksandr RUSINOV 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: 20210013024
    Abstract: An apparatus configured to produce an image charge/current signal representative of trapped ions undergoing oscillatory motion. The apparatus includes: an electrostatic ion trap configured to trap ions such that the trapped ions undergo oscillatory motion in the electrostatic ion trap; an image charge/current detector configured to obtain an image charge/current signal representative of trapped ions undergoing oscillatory motion in the electrostatic ion trap, wherein the electrostatic ion trap configured to trap ions such that the image charge/current signal in the time domain repeats, for ions of a given mass/charge ratio m, at a frequency fsig(m) [Hz] with a signal period Tsig(m) [s]. The image charge/current detector includes one or more pickup electrodes configured to obtain the image charge/current signal. The one or more pickup electrodes are arranged to detect two signal pulses caused by ions having the given mass/charge ratio m within each signal period Tsig(m).
    Type: Application
    Filed: June 26, 2020
    Publication date: January 14, 2021
    Applicant: SHIMADZU CORPORATION
    Inventors: Aleksandr RUSINOV, Li DING
  • Patent number: 10381208
    Abstract: A method of processing an image charge/current signal representative of trapped ions undergoing oscillatory motion. The method includes: identifying a plurality of fundamental frequencies potentially present in the image charge/current signal based on an analysis of peaks in a frequency spectrum corresponding to the image charge/current signal in the frequency domain, wherein each candidate fundamental frequency falls in a frequency range of interest; deriving a basis signal for each candidate fundamental frequency using a calibration signal; and estimating relative abundances of ions corresponding to the candidate fundamental frequencies by mapping the basis signals to the image charge/current signal. At least one candidate fundamental frequency is calculated using a frequency associated with a peak that falls outside the frequency range of interest and that has been determined as representing a second or higher order harmonic of the candidate fundamental frequency.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: August 13, 2019
    Assignee: SHIMADZU CORPORATION
    Inventors: Sergey Smirnov, Li Ding, Aleksandr Rusinov
  • Patent number: 10242854
    Abstract: Disclosed is a method of quantification of one or more ion species, in a sample of ions, using a mass spectrometer, the method including the steps of: obtaining a time domain data set corresponding to a signal induced by motion of the ions in the mass spectrometer; adjusting the data set by applying an asymmetric window function thereto; generating an absorption mode mass spectrum in the frequency domain including the step of applying a Fourier transform to the adjusted data set; determining peak ranges for one or more peaks in the mass spectrum associated with the one or more ion species; integrating, for each determined peak range, the spectral data within the respective peak range to generate a respective peak intensity value; and quantifying each of the one or more ion species on the basis of the respective peak intensity values.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: March 26, 2019
    Assignee: SHIMADZU CORPORATION
    Inventors: Aleksandr Rusinov, Li Ding
  • Publication number: 20190035615
    Abstract: A method of processing an image charge/current signal representative of trapped ions undergoing oscillatory motion. The method includes: identifying a plurality of fundamental frequencies potentially present in the image charge/current signal based on an analysis of peaks in a frequency spectrum corresponding to the image charge/current signal in the frequency domain, wherein each candidate fundamental frequency falls in a frequency range of interest; deriving a basis signal for each candidate fundamental frequency using a calibration signal; and estimating relative abundances of ions corresponding to the candidate fundamental frequencies by mapping the basis signals to the image charge/current signal. At least one candidate fundamental frequency is calculated using a frequency associated with a peak that falls outside the frequency range of interest and that has been determined as representing a second or higher order harmonic of the candidate fundamental frequency.
    Type: Application
    Filed: March 22, 2017
    Publication date: January 31, 2019
    Applicant: SHIMADZU CORPORATION
    Inventors: Sergey SMIRNOV, Li DING, Aleksandr RUSINOV
  • Publication number: 20180277346
    Abstract: Disclosed is a method of quantification of one or more ion species, in a sample of ions, using a mass spectrometer, the method including the steps of: obtaining a time domain data set corresponding to a signal induced by motion of the ions in the mass spectrometer; adjusting the data set by applying an asymmetric window function thereto; generating an absorption mode mass spectrum in the frequency domain including the step of applying a Fourier transform to the adjusted data set; determining peak ranges for one or more peaks in the mass spectrum associated with the one or more ion species; integrating, for each determined peak range, the spectral data within the respective peak range to generate a respective peak intensity value; and quantifying each of the one or more ion species on the basis of the respective peak intensity values.
    Type: Application
    Filed: October 30, 2015
    Publication date: September 27, 2018
    Applicant: SHIMADZU CORPORATION
    Inventors: Aleksandr RUSINOV, Li DING
  • Patent number: 9786485
    Abstract: A mass analyser comprises a pair of electrode arrays. Each array has a set of focusing electrodes which are supplied, in use, with voltage to create an electrostatic field in a space between the electrode arrays causing ions to undergo periodic, oscillatory motion in the space, ions passing between electrodes of the sets of focusing electrodes and being repeatedly focused at a center plane, mid-way between the electrode arrays. At least one electrode of each set of focusing electrodes has an electrode surface closer to the center plane than the electrode surfaces of other electrodes of the same set. The analyzer may be an ion trap mass analyser or a multi-turn ToF mass analyzer.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: October 10, 2017
    Assignee: SHIMADZU CORPORATION
    Inventors: Li Ding, Aleksandr Rusinov
  • Publication number: 20170084445
    Abstract: A mass analyser comprises a pair of electrode arrays. Each array has a set of focusing electrodes which are supplied, in use, with voltage to create an electrostatic field in a space between the electrode arrays causing ions to undergo periodic, oscillatory motion in the space, ions passing between electrodes of the sets of focusing electrodes and being repeatedly focused at a centre plane, mid-way between the electrode arrays. At least one electrode of each set of focusing electrodes has an electrode surface closer to the centre plane than the electrode surfaces of other electrodes of the same set. The analyser may be an ion trap mass analyser or a multi-turn ToF mass analyser.
    Type: Application
    Filed: April 29, 2015
    Publication date: March 23, 2017
    Applicant: SHIMADZU CORPORATION
    Inventors: Li DING, Aleksandr RUSINOV