Patents by Inventor Shinichi Yamaguchi

Shinichi Yamaguchi 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: 9638629
    Abstract: A method and apparatus for estimating the structure of an unidentified substance produced from an original substance having a known structural formula through partial structural change caused by metabolism or the like. A mass difference between a product ion, originating from the unidentified substance and having a partial structure including a structural change site, and a product ion, originating from the original substance and having a partial structure prior to the structural change, is equal to the mass difference between the original substance and the unidentified substance. Therefore, when pairs of product ions each having such a mass difference are selected to be compared with partial structures obtained from the known structural formula of the original substance, a minimum common partial structure having the structural change site is obtained.
    Type: Grant
    Filed: August 3, 2011
    Date of Patent: May 2, 2017
    Assignee: SHIMADZU CORPORATION
    Inventor: Shinichi Yamaguchi
  • Patent number: 9640373
    Abstract: Data of a plurality of samples collected by an LC/MS, GC/MS or other systems are converted into a two-dimensional table format. After LC/MS measurement data on a plurality of samples are obtained and the respective extracted ion chromatograms (XICs) are created, a time-axis adjustment for correcting a discrepancy in the retention time is performed, followed by a process of correcting the missing of data which has occurred in the head and/or tail section of the data as a result of the time-axis adjustment.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: May 2, 2017
    Assignee: SHIMADZU CORPORATION
    Inventor: Shinichi Yamaguchi
  • Publication number: 20170107625
    Abstract: A plated steel sheet (1) includes: a steel sheet (2); a pre-plating layer (3) on at least one surface of the steel sheet (2), the pre-plating layer (3) containing Al, Cu, In, Zn, Sn, or Sb, or any combination thereof; and a plating layer (4) of a Zn—Ni alloy on the pre-plating layer (3), a Ni content of the Zn—Ni alloy being 5 mass % to 15 mass %. A coating weight of the pre-plating layer (3) is 0.5 g/m2 or more, and a coating weight of the plating layer (4) is 5 g/m2 or more.
    Type: Application
    Filed: April 8, 2015
    Publication date: April 20, 2017
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Masao KUROSAKI, Shinichi YAMAGUCHI
  • Patent number: 9613787
    Abstract: A first mass analysis is executed in a condition that gas is not introduced into a loop-flight chamber (4), and a time-of-flight spectrum obtained in a data processor (12) is stored in a storage unit (13). Next, a second mass analysis is executed on the same sample as the one used in the first mass analysis in a condition that a valve (8) is opened and helium gas (He) is introduced into the loop-flight chamber (4), and the time-of-flight spectrum is obtained in the data processor (12). If different kinds of ions having the same m/z value exit, these ions form a single peak in the first time-of-flight spectrum, while these ions appear as separate peaks in the second time-of-flight spectrum even though they have the same m/z value. This is because, in the second mass analysis, the ions collide with the gas and have different times of flight depending on their difference in size.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: April 4, 2017
    Assignee: Shimadzu Corporation
    Inventors: Osamu Furuhashi, Shinichi Yamaguchi, Hideaki Izumi
  • Patent number: 9608501
    Abstract: A rotary electric machine is a rotary electric machine including a stator of a distributed winding type including a plurality of first slots, in each of which winding wires of a plurality of same phases or a winding wire of one phase are arranged, and a plurality of second slots, in each of which winding wires of a plurality of different phases are arranged. The total number of turns in each of the first slots is same as one another. The total number of turns in each of the second slots is same as one another. The total number of turns in the first slot and the total number of turns in the second slot are different from each other.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: March 28, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shinichi Yamaguchi, Koki Naka, Kazuaki Ando
  • Patent number: 9601322
    Abstract: A product ion spectrum is created on the basis of MS2 analysis data respectively obtained for a parent compound and a metabolite. Additionally, a neutral loss spectrum, in which the mass of each product ion is replaced with a mass difference between the mass of the product ion and that of a precursor ion, is created. Then, a common peak having the same mass on the neutral loss spectrums of both the parent compound and the metabolite is extracted, and a complementary peak appearing on the product ion spectrum of the metabolite is extracted; this peak appears at a position corresponding to the difference between the mass of the common peak and that of the precursor ion. The ion corresponding to the complementary peak is designated as a precursor ion for the next MS3 analysis, and this MS3 analysis is performed.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: March 21, 2017
    Assignee: SHIMADZU CORPORATION
    Inventor: Shinichi Yamaguchi
  • Patent number: 9595426
    Abstract: In estimating a structural formula of an unknown substance produced through partial structural change of an original substance having a known structure caused by metabolism or the like, structural change is considered in two stages, the elimination of a partial structure and the addition of another partial structure. First, an additional partial structure is collected as known information in addition to an MSn spectrum of the unknown substance and a structural formula of the original substance. A structural formula at the time when a partial structure is eliminated from the original substance is estimated, and a structural formula of each of product ions is estimated. The structural formula of the unknown substance is determined by estimating a structure that can produce the candidates for structural formulas of the product ions by dissociation.
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: March 14, 2017
    Assignee: SHIMADZU CORPORATION
    Inventors: Hiroaki Kozawa, Shinichi Yamaguchi
  • Publication number: 20170054339
    Abstract: A stator of a rotary electrical machine according to the invention includes a core back, a plurality of teeth, a plurality of slots, and a coil. The coil is configured by a plurality of conductor wires. Between inside of the slot and outside of the slot, the plurality of conductor wires are bent at an angle smaller than 180° in a circumferential direction of the core back, and between the bent part and the inside of the slot, the plurality of conductor wires are bent in the circumferential direction of the core back and in an opposite direction to a bending direction of the bent part.
    Type: Application
    Filed: April 24, 2014
    Publication date: February 23, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masaya HARAKAWA, Kenta OZAKI, Shinichi YAMAGUCHI, Kentaro HORISAKA, Kazuaki ANDO, Koki NAKA
  • Publication number: 20170019041
    Abstract: A control device converts phase currents supplied to a permanent-magnet rotary motor into a d-axis current and a q-axis current on a dq coordinate axis, and calculates a current command (a d-axis current command or a q-axis current command) for changing at least one of values of the d-axis current and the q-axis current according to a rotor position, based on a torque command, the d-axis current and the q-axis current, so as to cause a magnitude of a reverse magnetic field acting on a permanent-magnet end part to be equal to or lower than a magnetic coercive force of a permanent magnet.
    Type: Application
    Filed: February 28, 2014
    Publication date: January 19, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Makoto SUGIYAMA, Koki NAKA, Hisashi OTSUKA, Shinichi YAMAGUCHI, Eigo TOTOKI
  • Publication number: 20170011897
    Abstract: The mass spectrometer (1) provides an ionization chamber (11) therein with: a probe (15) having a sample to be measured flow path (155) for spraying a sample to be measured; and a standard sample flow path (255) for spraying a standard sample used for the calibration of the mass-to-charge ratio of the mass spectrum into the ionization chamber. The standard sample is intermittently introduced into the ionization chamber via a pulse valve (216). Thus, mixing of the sample to be measured and the standard sample can be prevented, while the timing according to which the standard sample is introduced can be appropriately controlled. It also becomes possible to acquire an accurate mass spectrum for each sample to be measured even in the case where a number of types of samples to be measured are introduced into the ionization chamber one after another over a short period of time.
    Type: Application
    Filed: July 3, 2014
    Publication date: January 12, 2017
    Applicant: SHIMADZU CORPORATION
    Inventor: Shinichi YAMAGUCHI
  • Patent number: 9537380
    Abstract: A permanent-magnet type rotating electrical machine, including a rotor including a plurality of magnetic poles arranged at an equal interval, and a stator including a plurality of teeth and a plurality of armature windings. A high frequency voltage different in frequency and amplitude from voltages for generating a torque is applied to the armature windings. A magnetic pole position of the rotor is estimated by using a current trajectory of a measured high frequency current. When dq transform is applied to the measured high frequency current, a current trajectory forms an ellipse on d and q axes. Angular variation ranges of a major axis of the ellipse with respect to a load current and a rotor position are set so as to acquire a predetermined position estimation resolution.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: January 3, 2017
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shinichi Yamaguchi, Eigo Totoki, Masato Ito, Daisuke Nishijima, Toshinori Tanaka
  • Patent number: 9522847
    Abstract: There are provided a dielectric ceramic having large specific resistance and even capacitance characteristic at 150° C., as well as a laminated ceramic electronic component employing such a dielectric ceramic. A ceramic layer includes crystal grains, the ceramic layer containing a perovskite type compound containing Ba, Ca, Ti, and Zr, containing Si, and optionally containing Mn. When the total content of Ti and Zr is 1 molar part, the content of Mn is 0.015 molar part or less, the content of Si is 0.005 molar part or more and less than 0.03 molar part, the molar ratio x of Ca/(Ba+Ca) satisfies 0.05<x<0.20, and the molar ratio y of Zr/(Ti+Zr) satisfies 0.03<y<0.18. The crystal grains have an average grain size of less than 130 nm.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: December 20, 2016
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Shoichiro Suzuki, Shinichi Yamaguchi
  • Patent number: 9520231
    Abstract: A laminated ceramic capacitor that includes a ceramic laminated body of a plurality of stacked ceramic dielectric layers, a plurality of internal electrodes opposed to each other with the ceramic dielectric layers interposed therebetween within the ceramic laminated body, and external electrodes provided on the outer surface of the ceramic laminated body and electrically connected to the internal electrodes. The internal electrodes contain Ni as a main constituent, and the Ni constituting the internal electrodes has a lattice constant in the range of 0.3250 nm to 0.3450 nm.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: December 13, 2016
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Shoichiro Suzuki, Shinichi Yamaguchi
  • Publication number: 20160358712
    Abstract: A multilayer ceramic capacitor having inner electrodes with a Ni-Metal A alloy, the Metal A being selected from Fe, V, Y, and Cu and dissolved in the Ni to form a solid solution. The percentage of the Metal A with respect to the total amount of Metal A and Ni in near-surface regions located at a depth of 2 nm from a surface of the inner electrode in contact with an adjacent ceramic dielectric layer is 1.4 or more atom %, and XA?YA?1.0, where XA represents the atomic percentage of Metal A in the near-surface regions and YA represents the atomic percentage of Metal A in mid-thickness regions of the inner electrodes. A method for producing a multilayer ceramic capacitor includes annealing the ceramic multilayer body under specific conditions to thereby increase, in the inner electrodes, the percentage of Metal A in the near-surface regions.
    Type: Application
    Filed: May 25, 2016
    Publication date: December 8, 2016
    Inventors: Akitaka Doi, Shinichi Yamaguchi, Shoichiro Suzuki
  • Publication number: 20160358713
    Abstract: A multilayer ceramic capacitor having inner electrodes containing at least one metal selected from Cu, Ag, Pd, Pt, Rh, Ir, Ru, and Os in an amount of 0.1 atom % or more that is dissolved in Ni and Sn to form a solid solution. The percentage of Sn with respect to the total amount of Ni and Sn in near-surface regions each located at a depth of 2 nm from a surface of the inner electrode in contact with an adjacent ceramic dielectric layer is 1.4 or more atom %, and X?Y?1.0, where X represents the atomic percentage of Sn in the near-surface regions and Y represents the atomic percentage of Sn in mid-thickness regions of the inner electrodes. A method for producing a multilayer ceramic capacitor includes annealing the ceramic multilayer body to increase, in the inner electrodes, the percentage of Sn in the near-surface regions.
    Type: Application
    Filed: May 25, 2016
    Publication date: December 8, 2016
    Inventors: AKITAKA DOI, Shinichi Yamaguchi, Shoichiro Suzuki
  • Patent number: 9515528
    Abstract: A permanent magnet rotary electric machine includes: a stator in which a plurality of teeth and a plurality of slots are formed on an inner periphery of a cylindrical stator core, and a winding wire is wound around the teeth so as to be disposed in the slots; and a rotor disposed in a hollow portion of the stator with an air gap between the rotor and the stator. In the rotor, 2n or more (n is a natural number equal to or larger than 1) radial projections are provided on an outer periphery of a rotor core, and a ferrite magnet is disposed between adjacent projections. A radial height of the projection is less than a thickness of middle of the ferrite magnet.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: December 6, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shinichi Yamaguchi, Yoshiki Maeda, Kazuaki Ando, Koki Naka, Masaya Harakawa
  • Publication number: 20160343558
    Abstract: A composition formula of each precursor ion located on a measured mass spectrum is estimated from the m/z value of the precursor ion (S11). A composition formula of each product ion located on a measured MS/MS spectrum is estimated from the m/z value of the product ion (S11). For each product-ion peak, the assignment of the peak is determined by verifying consistency between the composition formula of the product ion and the composition formula of each of the precursor ions (S13-S14). Based on the assignment result, the MS/MS spectrum data are separated and an MS/MS spectrum for each precursor ion is created (S15-S16). In this manner, MS/MS spectra which respectively correspond to a plurality of compounds can be created from an MS/MS spectrum in which the product ions originating from those compounds are mixed, and those compounds can be identified.
    Type: Application
    Filed: July 20, 2016
    Publication date: November 24, 2016
    Applicant: SHIMADZU CORPORATION
    Inventor: Shinichi YAMAGUCHI
  • Publication number: 20160343557
    Abstract: Peak information is collected from an MS/MS spectrum in which the product ions generated from ions originating from a plurality of compounds are mixed. Using one of the m/z values of a plurality of ion species as precursor-ion information and the peak information of the MS/MS spectrum as product-ion information, a database search is performed to find candidate compounds for each compound, and a standard MS/MS spectrum of each candidate compound is obtained. For each combination of the candidate compounds, a virtual MS/MS spectrum is created by integrating the standard MS/MS spectra of those candidate compounds, and the degree of similarity between the virtual MS/MS spectrum and the measured MS/MS spectrum is calculated. If the candidate compounds are correct compounds, the degree of similarity will be high. Accordingly, the compound names and other results are visually presented to users in descending order of the degree of similarity.
    Type: Application
    Filed: January 20, 2014
    Publication date: November 24, 2016
    Applicant: SHIMADZU CORPORATION
    Inventor: Shinichi YAMAGUCHI
  • Publication number: 20160329197
    Abstract: The objective of the present invention is to obtain an MS2 spectrum for each of a plurality of different ion species even when their m/z values are extremely close to each other and prevent separate setting of each ion species as the precursor ion. In the vicinity of the target m/z, a precursor-ion selection window covering a predetermined m/z range (2×?M) is gradually shifted in predetermined steps (?m) to define a plurality of windows as the condition of the precursor-ion selection. When an MS2 analysis is performed on the same sample for each window, the intensities of the product-ion peaks which appear on the MS2 spectrum change with the change in the central m/z value of the window. From this intensity change, which of the plurality of ion species selected as the precursor ion is the origin of each product ion is determined. Based on the result of this determination, the product ions are sorted out and an MS2 spectrum is reconstructed for each ion species.
    Type: Application
    Filed: January 16, 2014
    Publication date: November 10, 2016
    Applicant: SHIMADZU CORPORATION
    Inventor: Shinichi YAMAGUCHI
  • Publication number: 20160329787
    Abstract: The rotation of the synchronous reluctance motor is controlled through energization of the winding with current of a phase having a ratio k between the total sum of radial-direction widths of the slits on the q-axis and a magnetic gap length, and having a lead angle ? from the d-axis. Among the core layers, the radial-direction width, on the q-axis, of the core layer that lies at a position closest in the circumferential direction to a point P at which there intersect the outer periphery of the rotor and the straight line passing through the rotor center and drawn at an angle ?=arctan(tan ?/(1+0.2k)) from the d-axis, is larger than the radial-direction width of other core layers on the q-axis.
    Type: Application
    Filed: September 24, 2014
    Publication date: November 10, 2016
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kazumasa ITO, Shinichi YAMAGUCHI