Patents by Inventor Masaaki Kawai

Masaaki Kawai 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: 10955727
    Abstract: A wavelength converter includes an excitation light source outputting excitation light, a beam splitter receiving an input of the excitation light and an input of the optical signal and to divide both the inputted excitation light and the inputted optical signal into a first polarization component and a second polarization component, a non-linear optical fiber as a non-polarization-maintaining fiber, an accommodation section securing and accommodating the non-linear optical fiber, a first collimator lens disposed between the beam splitter and a first end of the non-linear optical fiber, and a second collimator lens disposed between the beam splitter and a second end of the non-linear optical fiber, wherein the optical signal is inputted to the beam splitter from a direction different from the input of the excitation light.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: March 23, 2021
    Assignee: FUJITSU LIMITED
    Inventors: Goji Nakagawa, Tomoyuki Kato, Takeshi Hoshida, Masaaki Kawai
  • Publication number: 20200264492
    Abstract: A wavelength converter includes an excitation light source outputting excitation light, a beam splitter receiving an input of the excitation light and an input of the optical signal and to divide both the inputted excitation light and the inputted optical signal into a first polarization component and a second polarization component, a non-linear optical fiber as a non-polarization-maintaining fiber, an accommodation section securing and accommodating the non-linear optical fiber, a first collimator lens disposed between the beam splitter and a first end of the non-linear optical fiber, and a second collimator lens disposed between the beam splitter and a second end of the non-linear optical fiber, wherein the optical signal is inputted to the beam splitter from a direction different from the input of the excitation light.
    Type: Application
    Filed: February 4, 2020
    Publication date: August 20, 2020
    Applicant: FUJITSU LIMITED
    Inventors: GOJI NAKAGAWA, Tomoyuki Kato, Takeshi Hoshida, Masaaki Kawai
  • Patent number: 9579610
    Abstract: A method for manufacturing a silica membrane filter includes performing, at least once, a fired membrane forming operation having a membrane forming step of applying, to a porous substrate, a precursor sol which is a sol of a silicon alcoxide including a p-tolyl group to form a precursor sol membrane, a drying step of drying the precursor sol membrane formed in the porous substrate to form a dried membrane, and a firing step of firing the dried membrane formed in the porous substrate to form a fired membrane, thereby preparing the silica membrane filter including the porous substrate and a silica membrane which is the fired membrane formed in the porous substrate, and a ratio of a total mass of the silica membrane to a total mass of the dried membrane is 38 mass % or more and 85 mass % or less.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: February 28, 2017
    Assignee: NGK Insulators, Ltd.
    Inventors: Masaaki Kawai, Aya Miura, Nobuhiko Mori
  • Patent number: 9045371
    Abstract: A silicon carbide-based porous body comprising a plurality of silicon carbide (SiC) particles as an aggregate and a binder which binds the silicon carbide particles to each other, wherein the content of the binder, i.e. [100×binder/(silicon carbide particles+binder)] is 5 to 70% by volume, the open pore ratio is 30 to 70%, and the binder contains at least one member selected from the group consisting of a Ti silicide, a Zr silicide, a Mo silicide and a W silicide, in an amount of at least 60% by volume of the total binder. The silicon carbide-based porous body can avoid excessive temperature elevation when it is used as a filter and the particulate matter (PM) captured thereby is burnt and removed.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: June 2, 2015
    Assignee: NGK INSULATORS, LTD.
    Inventors: Masaaki Kawai, Yoshio Kikuchi
  • Publication number: 20150053605
    Abstract: A method for manufacturing a silica membrane filter includes performing, at least once, a fired membrane forming operation having a membrane forming step of applying, to a porous substrate, a precursor sol which is a sol of a silicon alcoxide including a p-tolyl group to form a precursor sol membrane, a drying step of drying the precursor sol membrane formed in the porous substrate to form a dried membrane, and a firing step of firing the dried membrane formed in the porous substrate to form a fired membrane, thereby preparing the silica membrane filter including the porous substrate and a silica membrane which is the fired membrane formed in the porous substrate, and a ratio of a total mass of the silica membrane to a total mass of the dried membrane is 38 mass % or more and 85 mass % or less.
    Type: Application
    Filed: September 12, 2014
    Publication date: February 26, 2015
    Inventors: Masaaki KAWAI, Aya MIURA, Nobuhiko MORI
  • Patent number: 8764889
    Abstract: There is provided a silica membrane filter having performance of selectively separating an aromatic compound and performance of selectively separating an alcohol. The silica membrane filter is provided with a porous substrate and a silica membrane. The ratio of a He gas permeation amount to an N2 gas permeation amount (He gas permeation amount/N2 gas permeation amount) is 7 or less, and the ratio of the N2 gas permeation amount to a SF6 gas permeation amount (N2 gas permeation amount/SF6 gas permeation amount) is 1.5 or more.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: July 1, 2014
    Assignee: NGK Insulators, Ltd.
    Inventors: Mariko Takagi, Kenichi Noda, Nobuhiko Mori, Masaaki Kawai, Aya Satoh
  • Patent number: 8580705
    Abstract: An exhaust gas purifying catalyst includes a substrate that defines an exhaust gas passage; a lower catalyst layer formed over the substrate, and an upper catalyst layer formed over the lower catalyst layer. The lower catalyst layer has a lower catalytic precious metal that contains at least one of Pt and Pd, and a lower-layer carrier that supports the lower catalytic precious metal. The upper catalyst layer has an upper catalytic precious metal that contains Rh, and an upper-layer carrier that supports the upper catalytic precious metal. The upper-layer carrier includes an inorganic mixed oxide that contains Ce, Zr, Al, Nd, and at least one element selected from the group consisting of rare earth elements other than Ce and alkaline earth elements. The Nd is unevenly distributed in covering layers that covers surfaces of interior regions within the inorganic mixed oxide.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: November 12, 2013
    Assignees: Toyota Jidosha Kabushiki Kaisha, Cataler Corporation, Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Yuki Aoki, Takeru Yoshida, Shingo Sakagami, Masaaki Kawai, Miho Hatanaka, Toshitaka Tanabe, Naoki Takahashi
  • Patent number: 8501661
    Abstract: A catalyst for purifying exhaust gases includes a substrate, and a catalytic layer. The catalytic layer includes a lower catalytic layer, a first upper catalytic layer, and a second upper catalytic layer. The lower catalytic layer being loaded with Pd and/or Pt is formed on the substrate. The first upper catalytic layer being loaded with Pd covers an upstream side of the lower catalytic layer, and exhibits a concentration of loaded Pd that falls in a range of from 4.5 to 12% by mass when the entirety of the first upper catalytic layer is taken as 100% by mass. The second upper catalytic layer being loaded with Rh covers a downstream side of the lower catalytic layer.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: August 6, 2013
    Assignees: Toyota Jidosha Kabushiki Kaisha, Cataler Corporation
    Inventors: Tomoaki Sunada, Hideaki Ueno, Yuki Aoki, Takeru Yoshida, Masahiro Nakahara, Masaaki Kawai, Singo Sakagami
  • Patent number: 8475907
    Abstract: There is provided a silicon carbide-based porous body which can avoid excessive temperature elevation when it is used as a filter and the captured particulate matter (PM) is burnt for removal and which is low in strength reduction caused by heat cycle. The silicon carbide-based porous body comprises a plurality of silicon carbide (SiC) particles as an aggregate and a plurality of binding phases which bind the silicon carbide particles to each other, wherein of the binding phases, the phase having the largest volume is either of a Si phase and a phase (a metal silicide phase) made of at least one member selected from the group consisting of a Ti silicide, a Zr silicide, a Mo silicide and a W silicide, all having a linear thermal expansion coefficient at 40 to 800° C., higher than that of Si by at least 3×10?6 (° C.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: July 2, 2013
    Assignee: NGK Insulators, Ltd.
    Inventor: Masaaki Kawai
  • Publication number: 20130143236
    Abstract: The present invention provides a method for determining sensitivity of tumor cells to dasatinib by evaluating inhibitory capacity of a predetermined tyrosine kinase inhibitor in a measurement sample which is prepared from a biological sample containing tumor cells and a computer program.
    Type: Application
    Filed: November 29, 2012
    Publication date: June 6, 2013
    Inventors: Masaaki KAWAI, Yasuhiro TORIKOSHI, Keigo GOHDA, Hideki ISHIHARA
  • Patent number: 8441706
    Abstract: An optical module includes a mirror which reflects input light and which outputs output light; and a mirror control section which is opposite to the mirror and which controls, at the time of the input light being reflected from a reflecting surface of the mirror, the reflecting surface by distorting the reflecting surface according to voltage applied to the mirror so as to output the output light an optical coupling characteristic of which changes. By using this optical module, the optical coupling characteristic of the output light changes.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: May 14, 2013
    Assignees: Fujitsu Limited, The University of Tokyo
    Inventors: Shinji Yamashita, Tsuyoshi Yamamoto, Masaaki Kawai, Hiroyuki Fujita
  • Publication number: 20130043186
    Abstract: There are disclosed a method for separating a liquid mixture in which a permeation performance enhances, and a composition of the liquid mixture containing a hydrocarbon liquid and an alcohol liquid at supply and a composition after membrane permeation are changed by a separating operation, and a device for separating a liquid mixture. The liquid mixture containing the hydrocarbon liquid and the alcohol liquid is used as a supply mixture liquid, and at least part of the supply mixture liquid is, in a liquid state, brought into contact with a membrane supply side of a separation membrane, and discharged in a vapor state through a membrane permeation side of the separation membrane, whereby a composition of a mixture vapor which is balanced with the supply mixture liquid becomes different from a composition of a vapor on the membrane permeation side.
    Type: Application
    Filed: November 6, 2009
    Publication date: February 21, 2013
    Applicant: NGK Insulators, Ltd.
    Inventors: Kiyoshi Araki, Masaaki Kawai, Shigeharu Hashimoto
  • Publication number: 20130029838
    Abstract: An exhaust gas purifying catalyst includes a substrate that defines an exhaust gas passage; a lower catalyst layer formed over the substrate, and an upper catalyst layer formed over the lower catalyst layer. The lower catalyst layer has a lower catalytic precious metal that contains at least one of Pt and Pd, and a lower-layer carrier that supports the lower catalytic precious metal. The upper catalyst layer has an upper catalytic precious metal that contains Rh, and an upper-layer carrier that supports the upper catalytic precious metal. The upper-layer carrier includes an inorganic mixed oxide that contains Ce, Zr, Al, Nd, and at least one element selected from the group consisting of rare earth elements other than Ce and alkaline earth elements. The Nd is unevenly distributed in covering layers that covers surfaces of interior regions within the inorganic mixed oxide.
    Type: Application
    Filed: December 23, 2010
    Publication date: January 31, 2013
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, CATALER CORPORATION
    Inventors: Yuki Aoki, Takeru Yoshida, Shingo Sakagami, Masaaki Kawai, Miho Hatanaka, Toshitaka Tanabe, Naoki Takahashi
  • Patent number: 8361197
    Abstract: There is provided a zeolite separation membrane-provided article having gaps or pores larger than pores inherent to zeolite crystals and controlled within an appropriate range and being capable of achieving both high permeability and high separability for components with small difference in adsorption properties or a component having a smaller molecular diameter than the diameter of the pores, a method for producing the same, a method for separating mixed fluids, and a device for separating mixed fluids. The zeolite separation membrane-provided article is provided with a zeolite membrane having an N2 gas permeation speed at room temperature of 1.0×10?6 mol·m?2·s?1·Pa?1 or more and a permeation speed ratio of 1,3,5-trimethylbenzene/N2 at room temperature of 0.17 or more and being free from dyeing caused by the impregnation with Rhodamine B.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: January 29, 2013
    Assignee: NGK Insulators, Ltd.
    Inventors: Masaaki Kawai, Toshihiro Tomita, Nobuhiko Mori, Aya Satoh
  • Publication number: 20120283091
    Abstract: A catalyst for purifying exhaust gases includes a substrate, and a catalytic layer. The catalytic layer includes a lower catalytic layer, a first upper catalytic layer, and a second upper catalytic layer. The lower catalytic layer being loaded with Pd and/or Pt is formed on the substrate. The first upper catalytic layer being loaded with Pd covers an upstream side of the lower catalytic layer, and exhibits a concentration of loaded Pd that falls in a range of from 4.5 to 12% by mass when the entirety of the first upper catalytic layer is taken as 100% by mass. The second upper catalytic layer being loaded with Rh covers a downstream side of the lower catalytic layer.
    Type: Application
    Filed: December 27, 2010
    Publication date: November 8, 2012
    Inventors: Tomoaki Sunada, Hideaki Ueno, Yuki Aoki, Takeru Yoshida, Masahiro Nakahara, Masaaki Kawai, Singo Sakagami
  • Patent number: 8240131
    Abstract: An object of the present invention is to provide an exhaust gas purifying apparatus for an internal combustion engine which can successfully achieve a good balance between reduction of exhaust emission and removal of particulate matter PM. An upstream side three-way catalyst 18 without OSC materials is disposed in an exhaust pipe 14 immediately below an exhaust manifold 12 of an internal combustion engine 10. A particulate filter (PM filter) 20 for trapping the particulate matter PM contained in exhaust gas is disposed at a downstream side of the upstream side three-way catalyst 18. A downstream side three-way catalyst 22 with the OSC materials is disposed at a downstream side of the PM filter 20.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: August 14, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takahiko Fujiwara, Masaaki Kawai
  • Patent number: 8101269
    Abstract: A porous fired body including a structure that aggregates are bonded by a bonding material, wherein the aggregates include oxide particles having a larger thermal capacity per unit volume than an SiC particle and SiC, the bonding material includes metallic Si, volume ratio of the metallic Si in the whole porous fired body is between 8 and 43% by volume, volume ratio of the particles of the oxide in the whole aggregates is between 14 and 55% by volume, the SiC particles and the oxide particles respectively include one or more particle groups, and an average particle size of each particle group is within a range of between 5 and 100 ?m.
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: January 24, 2012
    Assignee: NGK Insulators, Ltd.
    Inventors: Masaaki Kawai, Kenji Morimoto
  • Patent number: 8092624
    Abstract: There is provided a bonding material composition for obtaining a joined body by unitarily joining two or more members to be joined by means of a bonding material layer, wherein the bonding material composition contains flat particles, non-flat particles, smectite-based clay, and an inorganic adhesive as main components. The bonding material composition costs little, can relax thermal stress generated in the joined body without using fibers which may do harm to a human body, and can reduce defects such as a crack and a void upon drying or a thermal treatment.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: January 10, 2012
    Assignee: NGK Insulators, Ltd.
    Inventors: Takahiro Tomita, Kenji Morimoto, Katsuhiro Inoue, Masaaki Kawai, Suguru Kodama
  • Publication number: 20120000358
    Abstract: There is provided a zeolite separation membrane-provided article having gaps or pores larger than pores inherent to zeolite crystals and controlled within an appropriate range and being capable of achieving both high permeability and high separability for components with small difference in adsorption properties or a component having a smaller molecular diameter than the diameter of the pores, a method for producing the same, a method for separating mixed fluids, and a device for separating mixed fluids. The zeolite separation membrane-provided article is provided with a zeolite membrane having an N2 gas permeation speed at room temperature of 1.0×10?6 mol·m?2·s?1·Pa?1 or more and a permeation speed ratio of 1,3,5-trimethylbenzene/N2 at room temperature of 0.17 or more and being free from dyeing caused by the impregnation with Rhodamine B.
    Type: Application
    Filed: September 13, 2011
    Publication date: January 5, 2012
    Applicant: NGK Insulators, Ltd.
    Inventors: Masaaki KAWAI, Toshihiro TOMITA, Nobuhiko MORI, Aya SATOH
  • Publication number: 20110318768
    Abstract: The present invention provides a method for determining sensitivity of the tumor cells to an EGFR and/or HER2 inhibitor by evaluating inhibitory capacity of an Src inhibitor in a sample for measuring tyrosine kinase activity which is prepared from a biological sample containing tumor cells, a computer program and a method for determining effectiveness.
    Type: Application
    Filed: June 22, 2011
    Publication date: December 29, 2011
    Applicant: SYSMEX CORPORATION
    Inventors: Masaaki KAWAI, Yasuhiro TORIKOSHI, Keigo GOHDA