Patents by Inventor Koji Nakayama

Koji Nakayama 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: 11428342
    Abstract: In a vacuum ejector provided with a seal valve mechanism between a vacuum generation mechanism and a break flow path, the seal valve mechanism includes a valve plug that is biased toward a sealing opening from the break flow path side to block the seal opening, and is configured to open the seal opening by moving the valve plug away from the seal opening using a piston portion that operates according to supply air supplied from the vacuum generation mechanism.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: August 30, 2022
    Assignee: SMC CORPORATION
    Inventors: Toru Nakayama, Koji Sugano, Yasuhiro Ushijima
  • Publication number: 20220263010
    Abstract: A method for producing a piezoelectric actuator including forming a vibration plate, forming a first electrode on the vibration plate, forming a piezoelectric layer on the first electrode, and forming a second electrode on the piezoelectric layer, wherein the forming the vibration plate has a single layer forming step including forming a metal layer containing zirconium by a gas phase method, and forming a metal oxide layer by firing the metal layer, the single layer forming step is repeated, thereby forming the vibration plate in which the metal oxide layers are stacked, and the metal oxide layer has a thickness less than 200 nm.
    Type: Application
    Filed: May 4, 2022
    Publication date: August 18, 2022
    Inventors: Harunobu KOIKE, Takanori AIMONO, Masao NAKAYAMA, Motoki TAKABE, Koji SUMI, Yasuhiro ITAYAMA, Toshihiro SHIMIZU
  • Patent number: 11407777
    Abstract: An object of the present invention is to provide a metal-organic framework manufacturing method of manufacturing a metal-organic framework having excellent gas adsorbability and durability. A metal-organic framework manufacturing method according to an embodiment of the present invention includes: a step of mixing a metal salt containing a metal atom and a polydentate ligand in the presence of a solvent to manufacture a metal-organic framework, the polydentate ligand contains a compound represented by Formula (1), a content of the compound represented by Formula (1) in the polydentate ligand is 50 mol % or greater with respect to a total molar amount of the polydentate ligand, the solvent contains an organic solvent having a boiling point of 100° C. or higher, and a water content in the solvent is 0 to 90 mass % with respect to a total mass of the solvent.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: August 9, 2022
    Assignee: FUJIFILM Corporation
    Inventors: Koji Hironaka, Masaya Nakayama
  • Publication number: 20220178848
    Abstract: Super continuum light having a continuous spectrum over at least 1100 to 1300 nm is emitted from a pulsed light source, is pulse-stretched by a stretching element such that a relationship between a wavelength and an elapsed time in one pulse is one to one, and is radiated to a product. The light transmitted through the product is received by a light receiver, and output data is input to the determination unit. A quality determination program of the determination unit calculates an absorption spectrum from the output data, quantifies the absorption spectrum by chemometrics, and compares the absorption spectrum with a reference value to determine quality. The product determined to be a defective product is excluded by an exclusion mechanism.
    Type: Application
    Filed: March 25, 2020
    Publication date: June 9, 2022
    Applicants: Ushio Denki Kabushiki Kaisha, TOWA PHARMACEUTICAL CO., LTD.
    Inventors: Go YAMADA, Aya OTA, Koji NAKAYAMA
  • Patent number: 11333348
    Abstract: An exhaust gas cooler includes: a steam drum containing first water; an economizer for heat exchange between exhaust gas and the first water supplied from the steam drum; and a feedwater pipe for supplying the first water with second water having a lower temperature than the first water. The exhaust gas cooler is configured such that the first water flowing out of the economizer is introduced into the steam drum. The second water is divided and supplied to the first water flowing out of the economizer and the first water flowing into the economizer.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: May 17, 2022
    Assignee: Mitsubishi Heavy Industries Engineering, Ltd.
    Inventors: Kaori Yoshida, Moritoshi Murakami, Ayumu Yamazaki, Rikio Kan, Kiyotaka Kunimune, Koji Nakayama
  • Publication number: 20220123112
    Abstract: A silicon carbide semiconductor device has an active region and a termination structure portion disposed outside of the active region. The silicon carbide semiconductor device includes a semiconductor substrate of a second conductivity type, a first semiconductor layer of the second conductivity type, a second semiconductor layer of a first conductivity type, first semiconductor regions of the second conductivity type, second semiconductor regions of the first conductivity type, a gate insulating film, a gate electrode, a first electrode, and a second electrode. During bipolar operation, a smaller density among an electron density and a hole density of an end of the second semiconductor layer in the termination structure portion is at most 1×1015/cm3.
    Type: Application
    Filed: November 30, 2021
    Publication date: April 21, 2022
    Applicants: FUJI ELECTRIC CO., LTD., MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takeshi TAWARA, Tomonori MIZUSHIMA, Shinichiro MATSUNAGA, Kensuke TAKENAKA, Manabu TAKEI, Hidekazu TSUCHIDA, Kouichi MURATA, Akihiro KOYAMA, Koji NAKAYAMA, Mitsuru SOMETANI, Yoshiyuki YONEZAWA, Yuji KIUCHI
  • Publication number: 20210371288
    Abstract: A porous amorphous silicon which enables improvement in battery performances such as charge/discharge efficiency and battery capacity when used as the anode material; a method for producing a porous amorphous silicon, capable of producing a porous amorphous silicon composed entirely of amorphous silicon at relatively low cost in a short time; and a secondary battery using the porous amorphous silicon as the anode material. A molten metal containing metal and silicon is cooled at a cooling rate of 106 K/sec or more to form an eutectic alloy including the metal and the silicon, and then the metal is selectively eluted from the eutectic alloy with an acid or an alkali to obtain a porous amorphous silicon. The porous amorphous silicon has a lamellar or columnar structure having a mean lamellar diameter or a mean column diameter of 1 nm to 100 nm.
    Type: Application
    Filed: September 13, 2019
    Publication date: December 2, 2021
    Applicant: TOHOKU UNIVERSITY
    Inventors: Junpei OKADA, Koji NAKAYAMA, Takeshi WADA
  • Publication number: 20210329915
    Abstract: Provided is an absorption promotor for causing a flying-insect pest repellent fragrance-containing composition with a high repellent effect to be rapidly absorbed into an elastomer molded body. The absorption promotor for causing a flying-insect pest repellent fragrance-containing composition into an elastomer molded body having a hardness of 60 degrees or less includes d-limonene and/or 1,8-cineole as an active ingredient. The absorption promotor is blended preferably in a range of 2.0 to 65% by mass and more preferably 10 to 45% by mass in the flying-insect pest repellent fragrance-containing composition.
    Type: Application
    Filed: September 18, 2019
    Publication date: October 28, 2021
    Inventors: Ryoko UKITA, Tomomi IWAMOTO, Taiji ONO, Yumi KAWAJIRI, Koji NAKAYAMA
  • Publication number: 20210315209
    Abstract: An outdoor aerosol agent for insect pest control useful for insect pests with reduced sensitivity to pyrethroid-based insecticidal components, particularly mosquitoes, having excellent adhesion to surfaces to be treated and effectiveness of formation of a barrier space without causing issues with VOC regulations. The aerosol agent is obtained by filling a pressure-resistant container with an aerosol stock solution and a propellant, wherein VOC content in the aerosol stock solution is 30% by mass or less, the aerosol stock solution including: (a) 0.01 to 3.0% by mass of a room-temperature volatile pyrethroid-based insecticidal component that has a vapor pressure of 2×10?4 to 1×10?2 mmHg at 30° C.; (b) 0.5 to 10% by mass of a glycol ether compound having a boiling point of 160 to 320° C.; (c) 0.2 to 5.0% by mass of a nonionic surfactant and/or an anionic surfactant; and (d) the remainder % by mass being water.
    Type: Application
    Filed: August 6, 2019
    Publication date: October 14, 2021
    Inventors: Yuya HARADA, Yoko KOBAYASHI, Yumi KAWAJIRI, Koji NAKAYAMA
  • Publication number: 20210051937
    Abstract: Provided are a mosquito control aerosol which can produce a good control effect on mosquitoes over a long period of time while reducing influence on humans and pets, and a mosquito control method using the mosquito control aerosol. The mosquito control aerosol includes: a pressure-resistant container equipped with a metering spray valve, that contains a liquid aerosol-forming material including an insect pest control component and an organic solvent, and a propellant; and a spray button having a spray outlet connected to the metering spray valve. The volume of the liquid aerosol-forming material sprayed when the spray button is pressed down once is adjusted to 0.1 to 0.4 mL, and the spray force thereof as measured at a distance of 20 cm from the spray outlet at 25° C. is adjusted to 0.3 to 10.0 g·f.
    Type: Application
    Filed: November 3, 2020
    Publication date: February 25, 2021
    Inventors: Ayako NOTOMI, Hiroko YOSHINAKA, Yoko KOBAYASHI, Osamu TANAKA, Yumi KAWAJIRI, Koji NAKAYAMA
  • Publication number: 20210048366
    Abstract: A tube leak detection device for detecting leak of at least one tube of a heat exchanger which increases a temperature of a liquid by heat exchange between the liquid flowing inside the at least one tube and a fluid flowing outside the at least one tube includes: an inlet opening-and-closing valve and an outlet opening-and-closing valve disposed at an inlet end and an outlet end of the at least one tube, respectively; and a pressure detection member for detecting a pressure inside the at least one tube between the inlet opening-and-closing valve and the outlet opening-and-closing valve.
    Type: Application
    Filed: January 21, 2019
    Publication date: February 18, 2021
    Applicant: Mitsubishi Heavy Industries Engineering, Ltd.
    Inventors: Kaori Yoshida, Ayumu Yamazaki, Rikio Kan, Kiyotaka Kunimune, Koji Nakayama
  • Publication number: 20210048187
    Abstract: An exhaust gas cooler includes: a steam drum containing first water; an economizer for heat exchange between exhaust gas and the first water supplied from the steam drum; and a feedwater pipe for supplying the first water with second water having a lower temperature than the first water. The exhaust gas cooler is configured such that the first water flowing out of the economizer is introduced into the steam drum.
    Type: Application
    Filed: February 22, 2019
    Publication date: February 18, 2021
    Applicant: Mitsubishi Heavy Industries Engineering, Ltd.
    Inventors: Kaori Yoshida, Moritoshi Murakami, Ayumu Yamazaki, Rikio Kan, Kiyotaka Kunimune, Koji Nakayama
  • Patent number: 10868122
    Abstract: During epitaxial growth of an n?-type drift layer having a uniform nitrogen concentration, vanadium is doped in addition to the nitrogen, whereby an n?-type lifetime reduced layer is selectively formed in the n?-type drift layer. The n?-type lifetime reduced layer is disposed at a depth that is more than 5 ?m from a pn junction surface between a p-type anode layer and the n?-type drift layer in a direction toward a cathode side, and the n?-type lifetime reduced layer is disposed separated from the pn junction surface. Further, the n?-type lifetime reduced layer is disposed in a range from the pn junction surface to a depth that is ? times a thickness of the n?-type drift layer. A vanadium concentration of the n?-type lifetime reduced layer is 1/100 to ? of a nitrogen concentration of the n?-type lifetime reduced layer.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: December 15, 2020
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Takeshi Tawara, Koji Nakayama, Yoshiyuki Yonezawa, Hidekazu Tsuchida, Koichi Murata
  • Patent number: 10542740
    Abstract: Provided is a chemical agent vaporizing/discharging device which can efficiently vaporize and discharge a chemical agent from a chemical agent retainer, and sufficiently diffuse the chemical agent, even when the device is used in a relatively large space or outdoors. A chemical agent vaporizing/discharging device 100 comprises: a chemical agent retainer 50 having a chemical agent retention layer 10 including interstices 11 for allowing retention of a volatile chemical agent, and a gas permeable layer 20 including voids 21 having a size larger than a size of the interstices 11; and a rotational drive part 60 for driving the chemical agent retainer 50. A shape and a size of the chemical agent retainer 50, and a rotational speed of the rotational drive part 60, are set so that a centrifugal effect of 10 to 150 (G) is obtained during rotation of the chemical agent retainer 50.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: January 28, 2020
    Assignee: DAINIHON JOCHUGIKU Co., Ltd.
    Inventors: Seiichi Kashima, Ryoko Ukita, Yumi Kawajiri, Koji Nakayama
  • Publication number: 20190393312
    Abstract: During epitaxial growth of an n?-type drift layer having a uniform nitrogen concentration, vanadium is doped in addition to the nitrogen, whereby an n?-type lifetime reduced layer is selectively formed in the n?-type drift layer. The n?-type lifetime reduced layer is disposed at a depth that is more than 5 ?m from a pn junction surface between a p-type anode layer and the n?-type drift layer in a direction toward a cathode side, and the n?-type lifetime reduced layer is disposed separated from the pn junction surface. Further, the n?-type lifetime reduced layer is disposed in a range from the pn junction surface to a depth that is ? times a thickness of the n?-type drift layer. A vanadium concentration of the n?-type lifetime reduced layer is 1/100 to ? of a nitrogen concentration of the n?-type lifetime reduced layer.
    Type: Application
    Filed: May 31, 2019
    Publication date: December 26, 2019
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventors: Takeshi TAWARA, Koji Nakayama, Yoshiyuki Yonezawa, Hidekazu Tsuchida, Koichi Murata
  • Patent number: 10485228
    Abstract: An insect pest control product applicable to a water-based insecticidal composition with stable performance over a long time, which comprises a thermal vaporization/diffusion absorbent wick for vaporizing and diffusing a water-based insecticidal composition containing a pyrethroid insecticidal component having a vapor pressure of 2×10?4 to 1×10?2 mmHg at 30° C., a glycol ether compound having a boiling point of 150-300° C., and water. The wick has a water/oil-based liquid absorption ratio (V1/V2) within the range of 0.55-1.0, calculated from a speed (V1) at which a water-based liquid formulation rises through the wick, and a speed (V2) at which an oil-based liquid formulation rises through the wick, the water-based liquid formulation contains 40 mass % of diethylene glycol monobutyl ether, and the oil-based liquid formulation is a fluid paraffin having 14 carbon atoms.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: November 26, 2019
    Assignee: DAINIHON JOCHUGIKU Co., Ltd.
    Inventors: Taisuke Itano, Hiroshi Asai, Koji Nakayama
  • Publication number: 20190320652
    Abstract: Provided is an insect pest control product capable of effectively controlling flying insect pests. An insect pest control product comprising a thermal vaporization/diffusion absorbent wick for vaporizing and diffusing a water-based insecticidal composition containing a pyrethroid insecticidal component having a vapor pressure of 2×10?4 to 1×10?2 mmHg at 30° C., a glycol ether compound and/or glycol compound having a boiling point of 150-300° C., and water, wherein a concentration of the pyrethroid insecticidal component in diffused vapor particles one hour after the start of vaporization and diffusion is 1.5-18 times as high as a concentration of the pyrethroid insecticidal component in diffused vapor particles immediately after the start of vaporization and diffusion.
    Type: Application
    Filed: December 26, 2017
    Publication date: October 24, 2019
    Inventors: Taisuke ITANO, Yumiko ICHIMURA, Seiichi KASHIMA, Tomoyuki HIKITSUCHI, Koji NAKAYAMA
  • Patent number: 10349647
    Abstract: A three-dimensional structure is provided which is obtained by molding a volatile chemical-containing resin composition into a plate form, wherein the three-dimensional structure includes through-holes penetrating therethrough from the front to the back thereof, the through-holes have peripheries having a shape selected from polygonal, circular, circular arc and spiral shapes when the three-dimensional structure is viewed from the front, and the peripheries of the through-holes are formed on a single plane or on a smoothly curved imaginary surface.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: July 16, 2019
    Assignee: DAINIHON JOCHUGIKU CO., LTD.
    Inventors: Seiichi Kashima, Tomohiro Kakinoki, Yumi Kawajiri, Koji Nakayama, Masuo Matsumoto
  • Patent number: 10287069
    Abstract: A vaporizing/discharging container 100 is provided that can properly vaporize and discharge a volatile substance in use, and prevent tampering by children, etc. The vaporizing/discharging container 100 for vaporizing and discharging a volatile substance into the outside, includes a main body 10 configured to contain the volatile substance, and a closure member 20 having a vapor discharging hole 21 for the volatile substance, and configured to be screwed and attached onto the main body 10. A pair of temporary lock mechanisms 30 (31, 32) configured to engage with each other so that resistance occurs against a direction in which the closure member 20 is rotated backward after the closure member 20 is screwed onto the main body 10, are provided between the closure member 20 and the main body 10, and at least one of the temporary lock mechanisms 30 (31, 32) is formed in the shape of steps.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: May 14, 2019
    Assignees: ZHONGSHAN FUJI CHEMICAL CO., LTD., DAINIHON JOCHUGIKU CO., LTD., THE YANKEE CANDLE COMPANY, INC.
    Inventors: Chi Wai Chan, Koji Nakayama, Frederick A. Enko, Cheriyan B. Thomas
  • Patent number: 10195561
    Abstract: A steam supply system that can reheat CO2 absorbing liquid without lowering performance of a reboiler by decompressing a condensed water drum is provided. This system includes a reboiler that raises the temperature of absorbing liquid contacted with exhaust gas discharged from a boiler to absorb CO2 in the exhaust gas and heated to eliminate CO2. The reboiler includes a heat exchanger tube to which steam for heating is supplied and a condensed water drum that recovers condensed water of the steam introduced from the heat exchanger tube as steam drain, and the condensed water drum is provided with decompression unit that lowers pressure in the condensed water drum.
    Type: Grant
    Filed: September 20, 2012
    Date of Patent: February 5, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINEERING, LTD.
    Inventors: Koji Nakayama, Takahito Yonekawa, Masayuki Inui, Tatsuya Tsujiuchi, Osamu Miyamoto, Yoshiki Sorimachi