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: 20240125878
    Abstract: In separating water and fat with applying the Dixon method, peak intensities of fat with multiple peaks are individually calculated with a high degree of accuracy while reducing the number of variables to be estimated. Multiple images made up of signals acquired at different echo times (TEs) are used to solve a predetermined signal equation (signal model) expressing the relation between the pixel values (signal values) of the images and imaging parameters such as signal intensities of components and TE, thereby performing separation of signals for each component. For separating the signals, at least one of the variables (other than the signal intensity) included in the signal equation is subjected to a process (first estimation process) for refining a value roughly obtained, and then using thus refined value of the variable to estimate (second estimation process) other variables (including the signal intensity), the signals are separated.
    Type: Application
    Filed: September 22, 2023
    Publication date: April 18, 2024
    Inventors: Takashi Nishihara, Toru Shirai, Yoshitaka Bito, Masahiro Takizawa
  • Patent number: 11940520
    Abstract: For a complex image to be complexly added, appropriate phase correction is executed by a simple method to prevent occurrence of an artifact in a signal region and to reduce noise in a background region. Two or more types of smoothing processing with different smoothing degrees are executed on a phase image of the complex image to obtain two or more types of smoothed phase images having different smoothing degrees. A weight for each of these smoothed phase images is calculated based on a signal value (SNR) of an intensity image, and addition is performed by a weight for each signal value to obtain a smoothed phase image for correction. After a phase of the complex image is corrected using the smoothed phase image, a phase-corrected complex image is complexly added. As a result, phase correction equivalent to phase correction in which a smoothing degree is weakened in the signal region and a smoothing degree is strengthened in the background region is realized.
    Type: Grant
    Filed: August 22, 2022
    Date of Patent: March 26, 2024
    Assignee: FUJIFILM Healthcare Corporation
    Inventors: Ryota Sato, Suguru Yokosawa, Toru Shirai, Kazuho Kamba, Yoshitaka Sato, Masahiro Takizawa
  • Patent number: 11929589
    Abstract: A light-emitting component includes: a substrate; plural light-emitting elements that are disposed on the substrate and that emit light in a direction intersecting with a surface of the substrate; and plural thyristors that are stacked on the plural light-emitting elements and that are turned ON to drive the corresponding light-emitting elements so that the light-emitting elements emit light or an amount of light emitted from the light-emitting elements is increased. Each of the plural light-emitting elements includes a current confinement region which is oxidized via a hole provided in a multilayer structure. The multilayer structure is constituted by a corresponding light-emitting element and a corresponding thyristor.
    Type: Grant
    Filed: December 20, 2020
    Date of Patent: March 12, 2024
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Takashi Kondo, Michiaki Murata, Kenichi Ono, Masahiro Yoshikawa, Takehito Hikichi, Yuji Shirai
  • 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
  • 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: 7345180
    Abstract: A dipeptidyl peptidase IV inhibitor which is satisfactory in respect of activity, stability and safety and has an excellent action as a pharmaceutical agent. A compound represented by the following general formula or a pharmaceutically acceptable salt thereof: wherein R1 and R2 each represents hydrogen, an optionally substituted C1-6 alkyl group, or —COOR5 whereupon R5 represents hydrogen or an optionally substituted C1-6 alkyl group, or R1, R2, and a carbon atom together represent a 3- to 6-membered cycloalkyl group, R3 represents hydrogen or an optionally substituted C6-10 aryl group, R4represents a hydrogen or a cyano group, D represents —CONR6-, —CO— or —NR6CO—, R6 represents hydrogen or an optionally substituted C1-6 alkyl group, E represents —(CH2)m— whereupon m is 1 to 3, —CH2OCH2—, or —SCH2—, n is 0 to 3, and A represents an optionally substituted bicyclic heterocyclic group or bicyclic hydrocarbon group.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: March 18, 2008
    Assignee: Sanwa Kagaku Kenkyusho Co., Ltd.
    Inventors: Takuji Kakigami, Mitsuru Oka, Noriyasu Katoh, Masahiro Yoshida, Masahiro Shirai, Toru Murase, Masao Sakairi, Takayo Murase, Mitsuaki Takeuchi, Yuji Hayashi, Motohiro Takeda, Mitsuhiro Makino
  • Publication number: 20070223062
    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: March 21, 2007
    Publication date: September 27, 2007
    Applicant: CANON DENSHI KABUSHIKI KAISHA
    Inventors: Jun Tanaka, Takashi Machida, Shinobu Kato, Keiji Tsutaoka, Taketo Ochiai, Masahiro Shirai, Shigeru Ikezaki, Hirotaka Watanabe
  • Patent number: 7170658
    Abstract: An image reading apparatus which enables the area occupied by the apparatus to be made small and can stably transport even a thick sheet having stiffness. A sheet P contained in an inclined sheet containing portion 3 is transported to image reading portions 8 and 9 by a vertically extending first sheet transporting path R1, and an image on the sheet P is read by the image reading portions 8 and 9, and the sheet P on which the image has been read is delivered to a substantially horizontal delivery stacking portion 14 by a substantially horizontally extending second sheet transporting path R2. The image reading portion 9 is provided between the vertically extending first sheet transporting path R1 and the substantially horizontally extending second sheet transporting path R2, and in the image reading portion 9, the transport direction of the sheet P passed along the first sheet transporting path R1 is changed to a direction toward the second sheet transporting path R2.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: January 30, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahiro Shirai, Masashi Shimamura
  • Patent number: 7151621
    Abstract: An image reading apparatus which enables the area occupied by the apparatus to be made small and can stably transport even a thick sheet having stiffness. A sheet P contained in an inclined sheet containing portion 3 is transported to image reading portions 8 and 9 by a vertically extending first sheet transporting path R1, and an image on the sheet P is read by the image reading portions 8 and 9, and the sheet P on which the image has been read is delivered to a substantially horizontal delivery stacking portion 14 by a substantially horizontally extending second sheet transporting path R2. The image reading portion 9 is provided between the vertically extending first sheet transporting path R1 and the substantially horizontally extending second sheet transporting path R2, and in the image reading portion 9, the transport direction of the sheet P passed along the first sheet transporting path R1 is changed to a direction toward the second sheet transporting path R2.
    Type: Grant
    Filed: May 8, 2006
    Date of Patent: December 19, 2006
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventors: Masahiro Shirai, Masashi Shimamura
  • Patent number: D542292
    Type: Grant
    Filed: August 8, 2005
    Date of Patent: May 8, 2007
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventors: Teruhiko Kitamura, Masahiro Shirai
  • 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