Patents by Inventor Kohei Kawano

Kohei Kawano 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: 20200132259
    Abstract: A light-emitting device includes an optical member including first and second light emitting elements, first and second light condenser portions, and a light guide portion. The first light condenser portion is disposed at a position corresponding to the first light-emitting element, and condenses a portion of light emitted from the first light-emitting element. The second light condenser portion surrounds the first light condenser portion, and condenses a portion of the light that is not incident to the first light condenser portion among the light emitted from the first light-emitting element. The light guide portion is disposed at a periphery of the second light condenser portion and at a position corresponding to the second light-emitting element, and guides light emitted from the second light-emitting element by causing total reflection in an interior of the light guide portion.
    Type: Application
    Filed: October 30, 2019
    Publication date: April 30, 2020
    Applicant: NICHIA CORPORATION
    Inventors: Kohei SHIMA, Yohei KAWANO, Akira ASANO
  • Patent number: 10555083
    Abstract: An acoustic device includes: at least one processor, and at least one memory device that stores a plurality of instructions, which when executed by the at least one processor, causes the at least one processor to operate to: acquire data on a mixed sound of a reproduction sound of a first sound data output from a first speaker and a reproduction sound of a second sound data output from a second speaker, the mixed sound being picked up by a sound pickup device directed toward the first speaker, calculate a first similarity degree indicating similarity between the data on the mixed sound and the first sound data and a second similarity degree indicating similarity between the data on the mixed sound and the second sound data, and determine connection states of the first speaker and the second speaker based on the first similarity degree and the second similarity degree.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: February 4, 2020
    Assignee: YAMAHA CORPORATION
    Inventors: Atsushi Usui, Kenji Kawano, Kotaro Nakabayashi, Ryota Sato, Kohei Sekiguchi, Masaya Kano
  • Publication number: 20190281388
    Abstract: An acoustic device includes: at least one processor, and at least one memory device that stores a plurality of instructions, which when executed by the at least one processor, causes the at least one processor to operate to: acquire data on a mixed sound of a reproduction sound of a first sound data output from a first speaker and a reproduction sound of a second sound data output from a second speaker, the mixed sound being picked up by a sound pickup device directed toward the first speaker, calculate a first similarity degree indicating similarity between the data on the mixed sound and the first sound data and a second similarity degree indicating similarity between the data on the mixed sound and the second sound data, and determine connection states of the first speaker and the second speaker based on the first similarity degree and the second similarity degree.
    Type: Application
    Filed: March 6, 2019
    Publication date: September 12, 2019
    Inventors: Atsushi USUI, Kenji KAWANO, Kotaro NAKABAYASHI, Ryota SATO, Kohei SEKIGUCHI, Masaya KANO
  • Patent number: 10410185
    Abstract: An information processing apparatus includes a calculation unit that calculates a charge for a service used by a user based on a charge schedule, and a changing unit that, when a period starts, changes the charge schedule from a first charge schedule to a second charge schedule of at least one second charge schedule, and that, when the period ends, changes the charge schedule from the second charge schedule to the first charge schedule.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: September 10, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Hiroshi Yamamoto, Kensaku Masuda, Haruko Kawano, Kohei Kaibara, Atsushi Sugiura, Keiichi Hotta, Mika Mishima
  • Publication number: 20190199103
    Abstract: A semiconductor device capable of turning a discharge control transistor off faster while maintaining safety is provided. A control unit, in discharge stopping processing, turns a switching element on and executes a first discharge-stopping mode in which the gate voltage of the discharge control transistor is withdrawn via a load and, at a predetermined discharge-stopping mode switching timing, switches to a second discharge-stopping mode in which the gate voltage of the discharge control transistor is withdrawn directly to a low-voltage power source.
    Type: Application
    Filed: November 16, 2018
    Publication date: June 27, 2019
    Inventors: Kohei KAWANO, Tsuyoshi OTA
  • Patent number: 9556035
    Abstract: A particle formed of silica and carbon having a low impurity content and an excellent reactivity is provided. Also provided is a method of producing a silica and carbon-containing material including: (B) a carbon mixing step of mixing an aqueous alkali silicate solution having a silicon concentration within the liquid portion of at least 10 wt % with carbon so as to obtain a carbon-containing aqueous alkali silicate solution; and (C) a silica recovery step of mixing the carbon-containing aqueous alkali silicate solution with a mineral acid so as to cause carbon and silicon within the liquid portion to precipitate as particles formed of silica and carbon and thus obtaining a particle-containing liquid substance, then solid-liquid separating the liquid substance so as to obtain a solid portion of a silica and carbon-containing material which is an assembly of particles formed of silica and carbon and a liquid portion containing impurities.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: January 31, 2017
    Assignee: TAIHEIYO CEMENT CORPORATION
    Inventors: Kouki Ichitsubo, Kenta Masuda, Masakazu Suzuki, Kohei Kawano, Jun Kumasaka
  • Patent number: 9382121
    Abstract: A high-purity silicon carbide powder and its production method enable mass production of the high-purity silicon carbide powder at low cost in a safe manner. The content of impurities in the silicon carbide powder is 500 ppm or less. The silicon carbide powder can be obtained by heating a raw material for silicon carbide production in an Acheson furnace using a heat generator. The raw material for silicon carbide production is prepared by mixing a siliceous raw material and a carbonaceous raw material. The raw material for silicon carbide production contains the siliceous raw material and the carbonaceous raw material at a mixture mole ratio (C/SiO2) of 2.5 to 4.0 and has a content of impurities of 120 ppm or less.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: July 5, 2016
    Assignee: TAIHEIYO CEMENT CORPORATION
    Inventors: Kenta Masuda, Kouki Ichitsubo, Kohei Kawano, Masakazu Suzuki, Jun Kumasaka, Hideaki Tanaka
  • Publication number: 20140301933
    Abstract: A high-purity silicon carbide powder and its production method enable mass production of the high-purity silicon carbide powder at low cost in a safe manner. The content of impurities in the silicon carbide powder is 500 ppm or less. The silicon carbide powder can be obtained by heating a raw material for silicon carbide production in an Acheson furnace using a heat generator. The raw material for silicon carbide production is prepared by mixing a siliceous raw material and a carbonaceous raw material. The raw material for silicon carbide production contains the siliceous raw material and the carbonaceous raw material at a mixture mole ratio (C/SiO2) of 2.5 to 4.0 and has a content of impurities of 120 ppm or less.
    Type: Application
    Filed: August 23, 2012
    Publication date: October 9, 2014
    Applicant: TAIHEIYO CEMENT CORPORATION
    Inventors: Kenta Masuda, Kouki Ichitsubo, Kohei Kawano, Masakazu Suzuki, Jun Kumasaka, Hideaki Tanaka
  • Publication number: 20140227159
    Abstract: A particle formed of silica and carbon having a low impurity content and an excellent reactivity is provided. Also provided is a method of producing a silica and carbon-containing material including: (B) a carbon mixing step of mixing an aqueous alkali silicate solution having a silicon concentration within the liquid portion of at least 10 wt % with carbon so as to obtain a carbon-containing aqueous alkali silicate solution; and (C) a silica recovery step of mixing the carbon-containing aqueous alkali silicate solution with a mineral acid so as to cause carbon and silicon within the liquid portion to precipitate as particles formed of silica and carbon and thus obtaining a particle-containing liquid substance, then solid-liquid separating the liquid substance so as to obtain a solid portion of a silica and carbon-containing material which is an assembly of particles formed of silica and carbon and a liquid portion containing impurities.
    Type: Application
    Filed: July 3, 2012
    Publication date: August 14, 2014
    Applicant: TAIHEIYO CEMENT CORPORATION
    Inventors: Kouki Ichitsubo, Kenta Masuda, Masakazu Suzuki, Kohei Kawano, Atsushi Kumasaka
  • Publication number: 20100259201
    Abstract: The size of a light emitting device is reduced. The light emitting device for flash photography includes: a luminescent xenon tube; IGBT for the discharge switch of the xenon tube; a capacitor for discharging the xenon tube; and MOSFET for the charge switch of the capacitor. A semiconductor device used in this light emitting device is obtained by sealing the following in a package: a semiconductor chip in which the IGBT is formed; a semiconductor chip in which the MOSFET is formed; a semiconductor chip in which a drive circuit of the IGBT and a control circuit of the MOSFET are formed; and multiple leads coupled thereto.
    Type: Application
    Filed: April 7, 2010
    Publication date: October 14, 2010
    Inventors: Makoto KAWANO, Katsutoshi Bito, Atsushi Mitamura, Kohei Kawano