Patents by Inventor Masahiro Shirai

Masahiro Shirai 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: 20210068700
    Abstract: To calculate a high-resolution coil sensitivity distribution that does not depend on a shape or a structure of a subject with high accuracy. An MRI apparatus of the invention includes: a measurement unit that includes a reception coil including a plurality of channels, a measurement unit that measures a nuclear magnetic resonance signal of a subject for every channel of the reception coil; and an image computation unit that creates an image of the subject by using a sensitivity distribution for every channel of the reception coil, and a channel image obtained from the nuclear magnetic resonance signal measured by the measurement unit for every channel. The image computation unit includes a sensitivity distribution calculation unit that calculates a sensitivity distribution on a k-space for every channel by using the channel images and a composite image obtained by combining the channel images.
    Type: Application
    Filed: September 13, 2018
    Publication date: March 11, 2021
    Inventors: Toru SHIRAI, Yasuhiro KAMADA, Masahiro TAKIZAWA, Hisaaki OCHI
  • Publication number: 20200271744
    Abstract: An object of the present invention is to provide an image corrected for body motion with high accuracy in a short time when performing retrospective body motion correction on an MRI image, and to reduce a time from imaging to image display. A body motion corrector of an MRI apparatus includes: a weighting factor calculator that calculates a three-dimensional weighting factor based on signals received by multi-channel receive coils; a processing space converter that converts three-dimensional frequency space data of a measurement signal and the three-dimensional weighting factor respectively into hybrid space data and a two-dimensional weighting factor; a synthesized signal calculator that calculates a synthesized signal by convolution integration of the hybrid space data and the two-dimensional weighting factor; and a body motion position detector that detects a body motion occurrence position in the hybrid space from the hybrid space data and the synthesized signal.
    Type: Application
    Filed: February 24, 2020
    Publication date: August 27, 2020
    Inventors: Yukari YAMAMOTO, Toru SHIRAI, Masahiro TAKIZAWA, Takashi NISHIHARA
  • Publication number: 20200258199
    Abstract: In an image acquired by a plurality of receiver coils with the use of MRI, separated images are obtained by separating spatially overlapping signals according to PI method, and noise in the separated images is eliminated with a high degree of precision. A complex image spatially overlapping is measured from nuclear magnetic resonance signals received by a plurality of receiver coils, and spatially overlapping signals are separated and a plurality of separated images are calculated, by using sensitivity information of the plurality of receiver coils. Then, noise is eliminated based on a correlation of noise mixed between the separated images.
    Type: Application
    Filed: July 27, 2018
    Publication date: August 13, 2020
    Inventors: Toru SHIRAI, Ryota SATOH, Yasuhiro KAMADA, Masahiro TAKIZAWA, Yoshihisa SOTOME
  • Patent number: 10583043
    Abstract: The present invention relates to a backing having a three-layer structure prepared by sticking together an inner fiber layer for holding a pasty preparation, a film layer having through-holes, and an air-permeable outer fiber layer which prevents leaking out of the pasty preparation or a liquid component exuded from the pasty preparation, and also relates to an aqueous patch using the backing which can be applied for a long time.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: March 10, 2020
    Assignees: TEIKOKU SEIYAKU CO., LTD., TOYOBO CO., LTD.
    Inventors: Sadanobu Shirai, Masahiro Inazuki, Miho Ishigure, Hideo Isoda, Hiroyuki Sakamoto, Takashi Koida, Hiroyasu Sakaguchi
  • Patent number: 10489427
    Abstract: The present invention includes: an extraction unit that extracts a specified quantity of documents, as targets to be classified by a user, from document information; a classification code accepting unit that accepts a classification code which is an identifier used when categorizing the documents, and is assigned by the user to each of the extracted documents; a database that records keywords selected from the extracted documents on the basis of the classification code; a score calculation unit that calculates a score which evaluates linkage strength between documents included in the document information, and the classification code on the basis of the keywords wherein the score calculation unit recalculates the score on the basis of a result of further extraction, by the extraction unit, of a specified quantity of documents, as targets to be classified by the user, from the document information according to the score.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: November 26, 2019
    Assignee: FRONTEO, INC.
    Inventors: Masahiro Morimoto, Yoshikatsu Shirai, Hideki Takeda, Kazumi Hasuko
  • Patent number: 10445357
    Abstract: A document classification system is provided. The document classification system analyzes digital document information which is collected to be submitted as evidence in a lawsuit and classifies the digital document information.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: October 15, 2019
    Assignee: FRONTEO, INC.
    Inventors: Masahiro Morimoto, Yoshikatsu Shirai, Hideki Takeda, Kazumi Hasuko
  • Publication number: 20190301386
    Abstract: An exhaust heat recovery structure includes a first pipe through which exhaust gas from an engine flows; a second pipe that branches from the first pipe, the second pipe including a heat exchanger that implements heat exchange with the exhaust gas; and an opening and closing valve provided at the first pipe, the opening and closing valve adjusting flow amounts of the exhaust gas flowing into the second pipe, wherein the first pipe includes a first pipe body and a second pipe body that, are adjacent in a flow direction of the exhaust gas, and a join portion between the first pipe body and the second pipe body is provided along a circumferential direction of the first pipe.
    Type: Application
    Filed: March 22, 2019
    Publication date: October 3, 2019
    Inventors: Toshio Murata, Yuuichi Kaido, Keiichi Koshin, Masahiro Shirai, Koji Ichikawa
  • Publication number: 20190231708
    Abstract: The present invention provides an aqueous patch which can stably contain only one of an S-enantiomer and an R-enantiomer of a drug capable of being present in such enantiomers at a relatively high concentration over a long period of time, has the excellent adhesive property and the excellent shape retaining property, and achieves high skin permeability of the drug. Specifically, the present invention provides an aqueous patch containing only one of enantiomers of a drug as an active ingredient in a pasty preparation.
    Type: Application
    Filed: October 11, 2017
    Publication date: August 1, 2019
    Applicant: TEIKOKU SEIYAKU CO., LTD.
    Inventors: Sadanobu SHIRAI, Masahiro INAZUKI
  • Patent number: 10301547
    Abstract: The present invention relates to a flame retardant composition, including: at least one phosphorus compound represented by the following general formula (1) or (2); a cationic surfactant; and a nonionic surfactant: in the formula (1), A represents a divalent hydrocarbon group having 1 to 20 carbon atoms, n represents a number of from 1 to 10, and R1 to R8 each independently represent a hydrogen atom or an alkyl group having 1 to 20 carbon atoms; in the formula (2), R9 to R14 each independently represent a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, and r1, r2, and r3 each independently represent a number of 1 or 0.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: May 28, 2019
    Assignee: ADEKA CORPORATION
    Inventors: Masahiro Takata, Go Homma, Hiroaki Shirai, Masaki Hosaka
  • Patent number: 10253671
    Abstract: A heat exchanger comprises a plurality of heat exchange segments juxtaposed in a housing, and a plug member connected fluid-tightly to the housing, and supporting the heat exchange segments to provide a coolant or cooling medium passage in each gap between the heat exchange segments adjacent to each other. Each heat exchange segment comprises a case having an opening only on a surface of the case, at least outside of the opening being plugged fluid-tightly by the plug member, and a guide member, e.g., fin accommodated in the case, and provided with a plurality of passages allowing only gas flow in a predetermined direction, and gas intake passages and gas exhaust passages at the upstream and downstream thereof, wherein an opening of the case is provided with a gas inlet port communicated with the gas intake passage, and a gas outlet port communicated with the gas exhaust passages.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: April 9, 2019
    Assignee: SANGO CO., LTD.
    Inventors: Kazunari Matsuura, Masahiro Shirai, Toshiya Tokuda, Hisashi Nishino, Yuuichi Kaido
  • Publication number: 20170362988
    Abstract: A heat exchanger comprises a plurality of heat exchange segments juxtaposed in a housing, and a plug member connected fluid-tightly to the housing, and supporting the heat exchange segments to provide a coolant or cooling medium passage in each gap between the heat exchange segments adjacent to each other. Each heat exchange segment comprises a case having an opening only on a surface of the case, at least outside of the opening being plugged fluid-tightly by the plug member, and a guide member, e.g., fin accommodated in the case, and provided with a plurality of passages allowing only gas flow in a predetermined direction, and gas intake passages and gas exhaust passages at the upstream and downstream thereof, wherein an opening of the case is provided with a gas inlet port communicated with the gas intake passage, and a gas outlet port communicated with the gas exhaust passages.
    Type: Application
    Filed: February 18, 2016
    Publication date: December 21, 2017
    Applicant: SANGO CO., LTD.
    Inventors: Kazunari MATSUURA, Masahiro SHIRAI, Toshiya TOKUDA, Hisashi NISHINO, Yuuichi KAIDO
  • Patent number: 9138674
    Abstract: In the present invention, a honeycomb structure includes a joined honeycomb segment body in which a plurality of honeycomb segments are integrally joined by mutual joining surfaces via a joining material layer, and has a configuration in which a plurality of cells to become through channels of a fluid are arranged in parallel with one another along a central axis direction. The joining material layer contains, as aggregates, inorganic particles, and acicular crystal particles having a shot content ratio smaller than 10 mass %, and the acicular crystal particles include 80 mass % or more of acicular crystal particles having an average length of 20 to 500 ?m in a long axis direction of the acicular crystal particles. As the inorganic particles, silicon carbide, cordierite, alumina, zirconia, yttria or the like can be used, and as natural acicular minerals, sepiolite, wollastonite, palygorskite or the like can be used.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: September 22, 2015
    Assignee: NGK Insulators, Ltd.
    Inventors: Nobuaki Takahashi, Suguru Kodama, Yasushi Uchida, Masahiro Shirai
  • Patent number: 8705150
    Abstract: An image reading apparatus according to the present invention comprises an image reading unit arranged on a conveying path of a first medium and reading an image on the first medium, a conveying unit conveying the first medium and a second medium to the image reading unit, a width of the second medium being smaller than the first medium, and guide portions guiding the second medium introduced from a discharge port along the conveying path.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: April 22, 2014
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventors: Masahiro Shirai, Shigeru Ikezaki, Tatsuya Nishi, Tetsurou Ishikawa, Hiroshi Ito
  • Patent number: 8570611
    Abstract: An image reading apparatus including a shading correction mechanism that can be formed by fewer component parts than conventional ones, and is increased in the degree of freedom of design, thereby enabling reduction of the size and weight thereof. A contact glass guides an original to an image reading position. A glass holding member holds the glass. A line image sensor reads an image on the original conveyed to the image reading location, through the contact glass. A reference member is disposed at a location different from the image reading location on the contact glass. A moving mechanism relatively moves the line image sensor and the reference member so that the line image sensor can alternatively read the original conveyed to the image reading location and the reference member. A drive section externally drives the moving mechanism to move the line image sensor and/or the reference member.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: October 29, 2013
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventors: Jun Tanaka, Takashi Machida, Shinobu Kato, Keiji Tsutaoka, Taketo Ochiai, Masahiro Shirai, Shigeru Ikezaki, Hirotaka Watanabe
  • Publication number: 20130255212
    Abstract: In the present invention, a honeycomb structure includes a joined honeycomb segment body in which a plurality of honeycomb segments are integrally joined by mutual joining surfaces via a joining material layer, and has a configuration in which a plurality of cells to become through channels of a fluid are arranged in parallel with one another along a central axis direction. The joining material layer contains, as aggregates, inorganic particles, and acicular crystal particles having a shot content ratio smaller than 10 mass %, and the acicular crystal particles include 80 mass % or more of acicular crystal particles having an average length of 20 to 500 ?m in a long axis direction of the acicular crystal particles. As the inorganic particles, silicon carbide, cordierite, alumina, zirconia, yttria or the like can be used, and as natural acicular minerals, sepiolite, wollastonite, palygorskite or the like can be used.
    Type: Application
    Filed: March 21, 2013
    Publication date: October 3, 2013
    Applicant: NGK INSULATORS, LTD.
    Inventors: Nobuaki TAKAHASHI, Suguru KODAMA, Yasushi UCHIDA, Masahiro SHIRAI
  • Publication number: 20130077133
    Abstract: An image reading apparatus including a shading correction mechanism that can be formed by fewer component parts than conventional ones, and is increased in the degree of freedom of design, thereby enabling reduction of the size and weight thereof. A contact glass guides an original to an image reading position. A glass holding member holds the glass. A line image sensor reads an image on the original conveyed to the image reading location, through the contact glass. A reference member is disposed at a location different from the image reading location on the contact glass. A moving mechanism relatively moves the line image sensor and the reference member so that the line image sensor can alternatively read the original conveyed to the image reading location and the reference member. A drive section externally drives the moving mechanism to move the line image sensor and/or the reference member.
    Type: Application
    Filed: November 15, 2012
    Publication date: March 28, 2013
    Inventors: JUN TANAKA, TAKASHI MACHIDA, SHINOBU KATO, KEIJI TSUTAOKA, TAKETO OCHIAI, MASAHIRO SHIRAI, SHIGERU IKEZAKI, HIROTAKA WATANABE
  • Patent number: 8335021
    Abstract: An image reading apparatus including a shading correction mechanism that can be formed by fewer component parts than conventional ones, and is increased in the degree of freedom of design, thereby enabling reduction of the size and weight thereof. A contact glass guides an original to an image reading position. A glass holding member holds the glass. A line image sensor reads an image on the original conveyed to the image reading location, through the contact glass. A reference member is disposed at a location different from the image reading location on the contact glass. A moving mechanism relatively moves the line image sensor and the reference member so that the line image sensor can alternatively read the original conveyed to the image reading location and the reference member. A drive section externally drives the moving mechanism to move the line image sensor and/or the reference member.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: December 18, 2012
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventors: Jun Tanaka, Takashi Machida, Shinobu Kato, Keiji Tsutaoka, Taketo Ochiai, Masahiro Shirai, Shigeru Ikezaki, Hirotaka Watanabe
  • Publication number: 20120105925
    Abstract: An image reading apparatus according to the present invention comprises an image reading unit arranged on a conveying path of a first medium and reading an image on the first medium, a conveying unit conveying the first medium and a second medium to the image reading unit, a width of the second medium being smaller than the first medium, and guide portions guiding the second medium introduced from a discharge port along the conveying path.
    Type: Application
    Filed: October 28, 2011
    Publication date: May 3, 2012
    Applicant: CANON DENSHI KABUSHIKI KAISHA
    Inventors: Masahiro Shirai, Shigeru Ikezaki, Tatsuya Nishi, Tetsurou Ishikawa, Hiroshi Ito
  • Patent number: D574829
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: August 12, 2008
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventors: Masahiro Shirai, Kazuhide Sugiyama, Teruhiko Kitamura
  • Patent number: D879153
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: March 24, 2020
    Assignee: Sango Co., Ltd.
    Inventors: Keiichi Koshin, Yuuichi Kaitou, Kouji Ichikawa, Masahiro Shirai, Kazunari Matsuura, Daichi Higuma