Patents by Inventor Jun MOTEKI

Jun MOTEKI 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: 11063186
    Abstract: A method for producing an optical wavelength conversion member (9) composed of a sintered body containing, as main components, Al2O3 and a component represented by formula A3B5O12:Ce; an optical wavelength conversion member; an optical wavelength conversion component including the optical wavelength conversion member; and a light-emitting device including the optical wavelength conversion member or the optical wavelength conversion component. The production method of the sintered body includes firing in a firing atmosphere having a pressure of 104 Pa or more and an oxygen concentration of 0.8 vol. % or more and less than 25 vol. %.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: July 13, 2021
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Yusuke Katsu, Shohei Takaku, Tsuneyuki Ito, Takeshi Mitsuoka, Jun Moteki
  • Publication number: 20210032187
    Abstract: Provided is a method of producing various 2-((meth)allyloxymethyl)acrylic acid derivatives in high yields with no need to load a raw material in a large excess for improving a reaction conversion ratio, and without use of a catalyst having high toxicity or a strong acid catalyst. Also provided are powder compounds that may be utilized as raw materials for synthesizing various chemical products. A method of producing a 2-((meth)allyloxymethyl)acrylic acid derivative includes causing the powder of a salt of a 2-((meth)allyloxymethyl)acrylic acid anion and an alkali metal cation (component A), and a halide (component B) to react with each other to produce a 2-((meth)allyloxymethyl)acrylic acid derivative. The 2-((meth)allyloxymethyl)acrylic acid alkali metal salt powder is the powder of a salt of a 2-((meth)allyloxymethyl)acrylic acid anion and an alkali metal cation, and has a bulk density of 0.50 g/mL or more, or a water content of 0.05 wt % or less.
    Type: Application
    Filed: July 31, 2020
    Publication date: February 4, 2021
    Applicant: NIPPON SHOKUBAI CO., LTD.
    Inventors: Minoru Urata, Kazuhiko Nakamura, Jun Moteki
  • Patent number: 10910524
    Abstract: An optical wavelength conversion member and a light-emitting device including the optical wavelength conversion member. The light-emitting device (1) includes a container (3), a light-emitting element (5), and an optical wavelength conversion member (9). The optical wavelength conversion member (9) is composed of a polycrystalline ceramic sintered body containing, as main components, Al2O3 crystal grains and crystal grains of a component represented by formula A3B5O12:Ce. Specifically, A and B of the A3B5O12 individually represent at least one element selected from the following element groups: A: Sc, Y, and lanthanoids (except for Ce), and B: Al and Ga; the at least one element selected from the element groups is present in each crystal grain and the crystal grain boundary of the ceramic sintered body; and the element concentration of the crystal grain boundary is higher than the element concentration of the crystal grain.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: February 2, 2021
    Assignee: NGK SPARK PLUG CO.. LTD.
    Inventors: Jun Moteki, Shohei Takaku, Yusuke Katsu, Takeshi Mitsuoka, Tsuneyuki Ito
  • Patent number: 10766820
    Abstract: The durability of a ceramic sintered body is improved, and a reduction in its light emission intensity and the occurrence of a chromaticity variation are suppressed. The ceramic sintered body contains alumina and a compound represented by M13-XM2XM35O12. The volume percent of the compound in the ceramic sintered body is from 3% to 70% inclusive. The ratio of the intensity of XRD from a complex oxide of aluminum and M2 to the intensity of XRD from the compound in the ceramic sintered body is less than 0.05. The average grain diameter of the alumina contained in the ceramic sintered body is from 0.30 (?m) to 3.00 (?m) inclusive. M1 is at least one selected from Sc, Y, and lanthanoid elements, and M2 is at least one selected from lanthanoid elements except any lanthanoid element selected for M1. M3 is at least one of Al and Ga, and X is from 0.003 to 0.500 inclusive.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: September 8, 2020
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Jun Moteki, Yusuke Katsu, Takeshi Mitsuoka
  • Patent number: 10727378
    Abstract: An optical wavelength conversion member and a light-emitting device including the optical wavelength conversion member. The optical wavelength conversion member (9) is formed of a ceramic sintered body having a fluorescent phase containing fluorescent crystal grains as a main component and a translucent phase containing translucent crystal grains as a main component. Crystal grains of the fluorescent phase have a composition represented by formula A3B5O12:Ce, where the element A is selected from Sc, Y, and lanthanoids (except for Ce), and the element B is selected from Al and Ga. In the optical wavelength conversion member (9), 0.3<a<34 and 300 ?m<y<1,050 ?m are satisfied, wherein a represents the area ratio of the translucent phase to the fluorescent phase in a cross section of the optical wavelength conversion member (9), and y represents the interfacial length of the fluorescent phase.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: July 28, 2020
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Shohei Takaku, Yusuke Katsu, Tsuneyuki Ito, Yuki Shimura, Takeshi Mitsuoka, Jun Moteki
  • Patent number: 10665761
    Abstract: An optical wavelength conversion member including a polycrystalline ceramic sintered body containing, as main components, Al2O3 crystal grains and crystal grains of a component represented by formula A3B5O12:Ce, wherein A is at least one element selected from Sc, Y and lanthanoids (except for Ce), and B is at least one element selected from Al and Ga. Further, the following relations are satisfied: 0%?X?25%, 9%?Y?45%, and 48%?Z?90%, wherein X represents a proportion corresponding to the ratio a/N, Y represents a proportion corresponding to the ratio b/N, and Z represents a proportion corresponding to the ratio c/N and a, b, c and N are as defined herein. Also disclosed is a light-emitting device including the optical wavelength conversion member.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: May 26, 2020
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Jun Moteki, Shohei Takaku, Yusuke Katsu, Takeshi Mitsuoka, Tsuneyuki Ito
  • Publication number: 20190259918
    Abstract: An optical wavelength conversion member and a light-emitting device including the optical wavelength conversion member. The optical wavelength conversion member (9) is formed of a ceramic sintered body having a fluorescent phase containing fluorescent crystal grains as a main component and a translucent phase containing translucent crystal grains as a main component. Crystal grains of the fluorescent phase have a composition represented by formula A3B5O12:Ce, where the element A is selected from Sc, Y, and lanthanoids (except for Ce), and the element B is selected from Al and Ga. In the optical wavelength conversion member (9), 0.3<a<34 and 300 ?m<y<1,050 ?m are satisfied, wherein a represents the area ratio of the translucent phase to the fluorescent phase in a cross section of the optical wavelength conversion member (9), and y represents the interfacial length of the fluorescent phase.
    Type: Application
    Filed: October 20, 2017
    Publication date: August 22, 2019
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Shohei TAKAKU, Yusuke KATSU, Tsuneyuki ITO, Yuki SHIMURA, Takeshi MITSUOKA, Jun MOTEKI
  • Publication number: 20190245118
    Abstract: An optical wavelength conversion member and a light-emitting device including the optical wavelength conversion member. The light-emitting device (1) includes a container (3), a light-emitting element (5), and an optical wavelength conversion member (9). The optical wavelength conversion member (9) is composed of a polycrystalline ceramic sintered body containing, as main components, Al2O3 crystal grains and crystal grains of a component represented by formula A3B5O12:Ce. Specifically, A and B of the A3B5O12 individually represent at least one element selected from the following element groups: A: Sc, Y, and lanthanoids (except for Ce), and B: Al and Ga; the at least one element selected from the element groups is present in each crystal grain and the crystal grain boundary of the ceramic sintered body; and the element concentration of the crystal grain boundary is higher than the element concentration of the crystal grain.
    Type: Application
    Filed: October 20, 2017
    Publication date: August 8, 2019
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Jun MOTEKI, Shohei TAKAKU, Yusuke KATSU, Takeshi MITSUOKA, Tsuneyuki ITO
  • Publication number: 20190245119
    Abstract: A method for producing an optical wavelength conversion member (9) composed of a sintered body containing, as main components, Al2O3 and a component represented by formula A3B5O12:Ce; an optical wavelength conversion member; an optical wavelength conversion component including the optical wavelength conversion member; and a light-emitting device including the optical wavelength conversion member or the optical wavelength conversion component. The production method of the sintered body includes firing in a firing atmosphere having a pressure of 104 Pa or more and an oxygen concentration of 0.8 vol. % or more and less than 25 vol. %.
    Type: Application
    Filed: October 24, 2017
    Publication date: August 8, 2019
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Yusuke KATSU, Shohei TAKAKU, Tsuneyuki ITO, Takeshi MITSUOKA, Jun MOTEKI
  • Publication number: 20190233333
    Abstract: The durability of a ceramic sintered body is improved, and a reduction in its light emission intensity and the occurrence of a chromaticity variation are suppressed. The ceramic sintered body contains alumina and a compound represented by M13-XM2XM35O12. The volume percent of the compound in the ceramic sintered body is from 3% to 70% inclusive. The ratio of the intensity of XRD from a complex oxide of aluminum and M2 to the intensity of XRD from the compound in the ceramic sintered body is less than 0.05. The average grain diameter of the alumina contained in the ceramic sintered body is from 0.30 (?m) to 3.00 (?m) inclusive. M1 is at least one selected from Sc, Y, and lanthanoid elements, and M2 is at least one selected from lanthanoid elements except any lanthanoid element selected for M1. M3 is at least one of Al and Ga, and X is from 0.003 to 0.500 inclusive.
    Type: Application
    Filed: June 19, 2017
    Publication date: August 1, 2019
    Inventors: Jun MOTEKI, Yusuke KATSU, Takeshi MITSUOKA
  • Publication number: 20190198726
    Abstract: An optical wavelength conversion member including a polycrystalline ceramic sintered body containing, as main components, Al2O3 crystal grains and crystal grains of a component represented by formula A3B5O12:Ce, wherein A is at least one element selected from Sc, Y and lanthanoids (except for Ce), and B is at least one element selected from Al and Ga. Further, the following relations are satisfied: 0%?X?25%, 9%?Y?45%, and 48%?Z?90%, wherein X represents a proportion corresponding to the ratio a/N, Y represents a proportion corresponding to the ratio b/N, and Z represents a proportion corresponding to the ratio c/N and a, b, c and N are as defined herein. Also disclosed is a light-emitting device including the optical wavelength conversion member.
    Type: Application
    Filed: October 18, 2017
    Publication date: June 27, 2019
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Jun MOTEKI, Shohei TAKAKU, Yusuke KATSU, Takeshi MITSUOKA, Tsuneyuki ITO
  • Patent number: 9808210
    Abstract: A photon counting type X-ray computed tomography apparatus includes an X-ray tube, a detector, a raw data generating section, an information compression section, and a data transmission section. The X-ray tube is configured to irradiate an X-ray. The detector is configured to count photons derived from the irradiated X-ray. The raw data generating section is configured to collect results of counting performed by the detector and to generate, from the results of counting, raw data for each of a plurality of energy bands. The information compression section is configured to compare values of the raw data between the raw data generated respectively for the energy bands, and to perform information compression of each of the raw data. The data transmission section is configured to transmit the raw data compressed by the information compression.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: November 7, 2017
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Takayuki Yamazaki, Tomonori Ozaki, Jun Moteki, Makoto Ishizaki, Hiroaki Nakai
  • Patent number: 9550699
    Abstract: In a ceramic composition mainly composed of alumina (Al2O3), tungsten carbide (WC) and zirconia (ZrO2), zirconium (Zr) is distributed in a first grain boundary as an interface where an alumina (Al2O3) crystal grain is adjacent to a tungsten carbide (WC) crystal grain and in a second grain boundary as an interface where two alumina (Al2O3) crystal grains are adjacent to each other.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: January 24, 2017
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Jun Moteki, Yusuke Katsu, Takeshi Mitsuoka
  • Publication number: 20160023952
    Abstract: In a ceramic composition mainly composed of alumina (Al2O3), tungsten carbide (WC) and zirconia (ZrO2), zirconium (Zr) is distributed in a first grain boundary as an interface where an alumina (Al2O3) crystal grain is adjacent to a tungsten carbide (WC) crystal grain and in a second grain boundary as an interface where two alumina (Al2O3) crystal grains are adjacent to each other.
    Type: Application
    Filed: December 27, 2013
    Publication date: January 28, 2016
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Jun MOTEKI, Yusuke KATSU, Takeshi MITSUOKA
  • Patent number: 9158013
    Abstract: A positron emission computed tomography apparatus according to an embodiment includes a detector, a buffer, and a regulating unit. The detector detects annihilation radiation. The buffer stores therein event data generated based on an output signal from the detector. The regulating unit regulates the amount of the event data read from the buffer during a high count rate period of the events at which the annihilation radiation is detected.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: October 13, 2015
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Jun Moteki, Kenta Moriyasu
  • Patent number: 8927447
    Abstract: A ceramic sintered body includes tungsten carbide, zirconia, and alumina. The content of the tungsten carbide is 20 to 50 vol %, and the content of the zirconia is 5 to 25 vol %. The crystal phase of the zirconia is a tetragonal crystal or a mixture of tetragonal and monoclinic crystals. The ceramic sintered body does not substantially include Ti compounds. The average particle diameter of the tungsten carbide, the average particle diameter of the zirconia, and the average particle diameter of the alumina are all 1 ?m or less.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: January 6, 2015
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Jun Moteki, Yusuke Katsu, Takeshi Mitsuoka
  • Patent number: 8889577
    Abstract: A sintered body containing alumina crystal particles and zirconia crystal particles as main components includes the tetragonal crystal particles as the zirconia crystal particles. The zirconia crystal particles satisfy relations 0%?A?3%, 3%?B?22% and 77%?C?96%,where A, B and C are as defined herein.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: November 18, 2014
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Jun Moteki, Yusuke Katsu, Kuniharu Tanaka, Takeshi Mitsuoka, Yoshihiro Kuroki, Hironobu Kusanagi
  • Publication number: 20140242383
    Abstract: A ceramic sintered body includes tungsten carbide, zirconia, and alumina. The content of the tungsten carbide is 20 to 50 vol %, and the content of the zirconia is 5 to 25 vol %. The crystal phase of the zirconia is a tetragonal crystal or a mixture of tetragonal and monoclinic crystals. The ceramic sintered body does not substantially include Ti compounds. The average particle diameter of the tungsten carbide, the average particle diameter of the zirconia, and the average particle diameter of the alumina are all 1 ?m or less.
    Type: Application
    Filed: June 10, 2013
    Publication date: August 28, 2014
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Jun Moteki, Yusuke Katsu, Takeshi Mitsuoka
  • Publication number: 20140211909
    Abstract: A photon counting type X-ray computed tomography apparatus includes an X-ray tube, a detector, a raw data generating section, an information compression section, and a data transmission section. The X-ray tube is configured to irradiate an X-ray. The detector is configured to count photons derived from the irradiated X-ray. The raw data generating section is configured to collect results of counting performed by the detector and to generate, from the results of counting, raw data for each of a plurality of energy bands. The information compression section is configured to compare values of the raw data between the raw data generated respectively for the energy bands, and to perform information compression of each of the raw data. The data transmission section is configured to transmit the raw data compressed by the information compression.
    Type: Application
    Filed: April 2, 2014
    Publication date: July 31, 2014
    Applicants: TOSHIBA MEDICAL SYSTEMS CORPORATION, KABUSHIKI KAISHA TOSHIBA
    Inventors: Takayuki YAMAZAKI, Tomonori Ozaki, Jun Moteki, Makoto Ishizaki, Hiroaki Nakai
  • Publication number: 20130236259
    Abstract: A sintered body containing alumina crystal particles and zirconia crystal particles as main components includes the tetragonal crystal particles as the zirconia crystal particles. The zirconia crystal particles satisfy relations 0%?A?3%, 3%?B?22% and 77%?C?96%, where A, B and C are as defined herein.
    Type: Application
    Filed: July 6, 2012
    Publication date: September 12, 2013
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Jun Moteki, Yusuke Katsu, Kuniharu Tanaka, Takeshi Mitsuoka, Yoshihiro Kuroki, Hironobu Kusanagi