Patents by Inventor Yuji Hotta

Yuji Hotta 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: 10563623
    Abstract: An EGR cooler in the disclosure includes: a gas path configured to allow an EGR gas to flow; a refrigerant path configured to perform heat exchange between the EGR gas circulating along the gas path and a refrigerant; an exothermic body containing portion configured such that an exothermic body to generate heat by adsorbing a predetermined working gas is contained within the EGR cooler and at least a part of the exothermic body contacts with a wall surface of the gas path; a working gas tank in which the working gas is stored; and a gas moving apparatus configured to move the working gas stored in the working gas tank, from the working gas tank to the exothermic body containing portion.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: February 18, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tomohiro Shinagawa, Takashi Hotta, Takeo Yamaguchi, Yoshio Ohashi, Taizo Yoshinaga, Yuji Miyoshi
  • Publication number: 20190301038
    Abstract: An electroplating bath is configured to precipitate a black trivalent chromium layer onto an object to be plated. The electroplating bath includes a nanodiamond and a thiocyanate ion as color enhancers.
    Type: Application
    Filed: February 26, 2019
    Publication date: October 3, 2019
    Inventors: Koji NAKATANI, Yuji HOTTA
  • Publication number: 20190299912
    Abstract: An occupant protection device for protecting an occupant sitting in a front seat of a vehicle. The occupant protection device includes a front airbag device that is adapted to be mounted in front of the front seat and a roof airbag device that is adapted to be mounted on a roof of the vehicle. The front airbag device includes a front airbag that is inflatable and deployable for protecting an upper body of the occupant when an impact is applied to the vehicle from forward. The roof airbag includes a roof airbag that is inflatable and deployable downwardly between the front airbag and the front seat for protecting a head of the occupant when an impact is applied to the vehicle from forward.
    Type: Application
    Filed: March 19, 2019
    Publication date: October 3, 2019
    Inventors: Motoyuki TANAKA, Masashi HOTTA, Koji KAWAMURA, Yuji SATO, Hajime KITTE, Kenichi FUKURONO
  • Publication number: 20190186430
    Abstract: An EGR cooler in the disclosure includes: a gas path configured to allow an EGR gas to flow; a refrigerant path configured to perform heat exchange between the EGR gas circulating along the gas path and a refrigerant; an exothermic body containing portion configured such that an exothermic body to generate heat by adsorbing a predetermined working gas is contained within the EGR cooler and at least a part of the exothermic body contacts with a wall surface of the gas path; a working gas tank in which the working gas is stored; and a gas moving apparatus configured to move the working gas stored in the working gas tank, from the working gas tank to the exothermic body containing portion.
    Type: Application
    Filed: October 15, 2018
    Publication date: June 20, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomohiro SHINAGAWA, Takashi HOTTA, Takeo YAMAGUCHI, Yoshio OHASHI, Taizo YOSHINAGA, Yuji MIYOSHI
  • Patent number: 10081312
    Abstract: A black plated resin part includes a resin base material, an underlying plating layer including a copper plating layer and a nickel plating layer formed in this order on the resin base material, a black chromium plating layer formed on the nickel plating layer, formed of trivalent chromium, and having a film thickness of not less than 0.15 ?m, and a corrosion resistant film formed on the black chromium plating layer, formed of chromic phosphate or molybdenum phosphate, and having a film thickness of not less than 7 nm. A brightness of the black chromium plating layer seen through the corrosion resistant film is expressed by an L* value of not more than 54 based on the L*a*b* color system.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: September 25, 2018
    Assignee: TOYODA GOSEI CO., LTD.
    Inventors: Yuji Hotta, Koji Nakatani
  • Publication number: 20180094181
    Abstract: A composite material of the present invention is a composite material including cellulose nanofibers and nanoparticles. The structure of the nanoparticles is composed of primary nanoparticles with a particle diameter of 3 to 50 nm or aggregated nanoparticles with a particle diameter of 100 nm or less in which the nanoparticles are aggregated. The surfaces of the cellulose nanofibers are densely covered with the nanoparticles. The composite material has a thermal conductivity in a plane direction of preferably 3.0 W/m·K or more. The production method of the composite material of the present invention includes continuously or sequentially mixing a suspension in which cellulose nanofibers are dispersed in a dispersion medium and a suspension in which nanoparticles are dispersed in a dispersion medium to obtain a composite material in which the surfaces of the cellulose nanofibers are densely covered with the nanoparticles.
    Type: Application
    Filed: September 14, 2017
    Publication date: April 5, 2018
    Inventors: Yuichi TOMINAGA, Kimiyasu SATO, Yuji HOTTA, Mai SUGIE, Hitoshi SHIBUYA, Toshio SARUYAMA
  • Publication number: 20180044191
    Abstract: A method of producing a complex of a lamellar inorganic compound and an organic compound includes: heat-treating a particular non-swelling lamellar inorganic compound within a pyrolysis temperature range of the non-swelling lamellar inorganic compound; and intercalating an organic compound into the non-swelling lamellar inorganic compound in a dispersion liquid in which the heat-treated non-swelling lamellar inorganic compound is dispersed in a medium, thereby inserting the organic compound into an interlamellar space of the non-swelling lamellar inorganic compound.
    Type: Application
    Filed: March 3, 2016
    Publication date: February 15, 2018
    Applicants: HITACHI CHEMICAL COMPANY, LTD., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Shihui SONG, Keiji FUKUSHIMA, Yoshitaka TAKEZAWA, Yuji HOTTA, Yusuke IMAI, Daisuke SHIMAMOTO, Yuichi TOMINAGA
  • Patent number: 9782518
    Abstract: A method for producing an implant material by: (A): setting a porous ceramic material having substantially unidirectionally arrayed pores at any depth position inside a container, (B): filling the container with a cell-containing liquid containing at least bone marrow blood and/or peripheral blood, and (C): applying, on the container, a centrifugal force in the direction along the axis of the container.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: October 10, 2017
    Assignees: KURARAY CO., LTD., University of Tsukuba
    Inventors: Yuji Hotta, Masataka Sakane
  • Publication number: 20170096113
    Abstract: A black plated resin part includes a resin base material, an underlying plating layer including a copper plating layer and a nickel plating layer formed in this order on the resin base material, a black chromium plating layer formed on the nickel plating layer, formed of trivalent chromium, and having a film thickness of not less than 015 ?m, and a corrosion resistant film formed on the black chromium plating layer, formed of chromic phosphate or molybdenum phosphate, and having a film thickness of not less than 7 nm. A brightness of the black chromium plating layer seen through the corrosion resistant film is expressed by an L* value of not more than 54 based on the L*a*b* color system.
    Type: Application
    Filed: September 12, 2016
    Publication date: April 6, 2017
    Inventors: Yuji HOTTA, Koji NAKATANI
  • Patent number: 8885111
    Abstract: An optical node device includes a light receiving/emitting portion having an input port into which a signal beam is incident and an output port that emits a signal beam of a selected wavelength, a chromatic dispersion device that scatters spatially the signal beam depending on the wavelength of the signal beam, an optical coupler that focuses, onto a two-dimensional plane, beams dispersed by the chromatic dispersion device, a spatial light modulating element arranged so as to receive incident light deployed on an xy plane made up of an x-axis direction deployed according to wavelength and a y-axis direction orthogonal to the x-axis direction, and having numerous pixels arranged in a lattice on the xy plane, and a spatial light modulating element driving portion that drives electrodes of the individual pixels arranged in the xy axial directions in the spatial light modulating element.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: November 11, 2014
    Assignee: Santec Corporation
    Inventors: Noboru Uehara, Yuji Hotta
  • Patent number: 8797638
    Abstract: A wavelength selective optical switch device includes an incidence and exit part where a signal beam made of light of a multiplicity of wavelengths enters and a signal beam of a selected wavelength exits, a wavelength dispersion element that spatially disperses a signal beam according to the wavelength thereof and multiplexes reflected light, a condensing element that condenses the light dispersed by the wavelength dispersion element onto a two-dimensional plane, and a wavelength selection element that uses a multilevel optical phased array arranged in a position to receive incident light developed on an xy-plane made of an x-axis direction and a y-axis direction perpendicular thereto developed according to a wavelength, having a multiplicity of pixels arrayed in a lattice on the xy-plane, and that cyclically changes the phase shift amount in the y-axis direction to a sawtooth wave pattern for each pixel on the x-axis.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: August 5, 2014
    Assignee: Santec Corporation
    Inventor: Yuji Hotta
  • Publication number: 20140028936
    Abstract: An optical node device includes a light receiving/emitting portion having an input port into which a signal beam is incident and an output port that emits a signal beam of a selected wavelength, a chromatic dispersion device that scatters spatially the signal beam depending on the wavelength of the signal beam, an optical coupler that focuses, onto a two-dimensional plane, beams dispersed by the chromatic dispersion device, a spatial light modulating element arranged so as to receive incident light deployed on an xy plane made up of an x-axis direction deployed according to wavelength and a y-axis direction orthogonal to the x-axis direction, and having numerous pixels arranged in a lattice on the xy plane, and a spatial light modulating element driving portion that drives electrodes of the individual pixels arranged in the xy axial directions in the spatial light modulating element.
    Type: Application
    Filed: July 10, 2013
    Publication date: January 30, 2014
    Inventors: Noboru Uehara, Yuji Hotta
  • Publication number: 20140016182
    Abstract: A wavelength selective optical switch device includes an incidence and exit part where a signal beam made of light of a multiplicity of wavelengths enters and a signal beam of a selected wavelength exits, a wavelength dispersion element that spatially disperses a signal beam according to the wavelength thereof and multiplexes reflected light, a condensing element that condenses the light dispersed by the wavelength dispersion element onto a two-dimensional plane, and a wavelength selection element that uses a multilevel optical phased array arranged in a position to receive incident light developed on an xy-plane made of an x-axis direction and a y-axis direction perpendicular thereto developed according to a wavelength, having a multiplicity of pixels arrayed in a lattice on the xy-plane, and that cyclically changes the phase shift amount in the y-axis direction to a sawtooth wave pattern for each pixel on the x-axis.
    Type: Application
    Filed: October 1, 2012
    Publication date: January 16, 2014
    Applicant: SANTEC CORPORATION
    Inventor: Yuji Hotta
  • Patent number: 8609235
    Abstract: Provision of a porous ceramic material which rapidly induces bone tissue formation and has practical strength. A porous ceramic material 11 having substantially unidirectionally oriented pores 12, a porosity of 40-90%, and an average open area of one pore of 0.05×10?3-50×10?3 mm2 both in a first sectional surface perpendicular to the pore 12 orientation direction and a second sectional surface parallel to the first sectional surface and 5 mm distant from the first sectional surface in the pore 12 orientation direction. Using the material 11, when a cylindrical test piece (diameter 3 mm×height 5 mm, the pore 12 array direction as a height direction) made of the material is dipped in polyethylene glycol up to 1 mm from one end thereof, polyethylene glycol permeates through the whole test piece preferably within 30 seconds.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: December 17, 2013
    Assignees: Kuraray Co., Ltd., National Institute for Materials Science
    Inventors: Yuji Hotta, Yasushi Suetsugu, Masanori Kikuchi, Toshiyuki Ikoma, Tomoya Kuwayama, Takashi Makabe, Junzo Tanaka
  • Publication number: 20130253657
    Abstract: The production method of an implant material of the present invention includes step (A): a step of setting a porous ceramic material having substantially unidirectionally arrayed pores at any depth position inside a container, step (B): a step of filling the container with a cell-containing liquid containing at least bone marrow blood and/or peripheral blood, and step (C): a step of applying, on the container, a centrifugal force in the direction along the axis of the container.
    Type: Application
    Filed: November 10, 2011
    Publication date: September 26, 2013
    Applicants: University of Tsukuba, KURARAY CO., LTD.
    Inventors: Yuji Hotta, Masataka Sakane
  • Patent number: 8524128
    Abstract: The invention provides a method of producing a porous ceramics material. The method comprises preparing a slurry by dispersing a ceramics raw material in a medium, filling the slurry in a container, inserting the container in a given direction into a cooling medium having a temperature not higher than the freezing point of the slurry such that the slurry freezes unidirectionally from one end side, drying the frozen slurry to give a green body, and firing the green body.
    Type: Grant
    Filed: March 4, 2008
    Date of Patent: September 3, 2013
    Assignee: Kuraray Co., Ltd.
    Inventors: Tomoya Kuwayama, Yuji Hotta
  • Patent number: 8488229
    Abstract: In a wavelength selection element employed in an optically variable filter array apparatus, pixels in a line form are placed into a light reflection state so that wavelength-scanned light can be incident on the optically variable filter array apparatus. On the basis of the wavelength of scanned reflection light and the location of the pixel in a light reflection state at a timing of acquisition of output, the relationship between the x coordinate of the wavelength selection element and wavelength is determined. This makes it possible to achieve calibration of the optically variable filter array apparatus capable of selection of a desired wavelength with respect to a desired channel from multi-channel WDM light.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: July 16, 2013
    Assignee: Santec Corporation
    Inventor: Yuji Hotta
  • Publication number: 20130088656
    Abstract: A method for controlling a characteristic of a variable optical filter including a frequency selecting element includes changing a driving voltage for a specific pixel of the frequency selecting element continuously to produce an amount of change in a frequency that is passed through that pixel, changing a driving voltage value for a specific pixel of the frequency selecting element continuously to produce an attenuation value for a beam that is passed through that pixel, calculating, from a relationship between the driving voltage and a frequency characteristic and between the driving voltage and amount of attenuation, a function that indicates an approximated curve of no less than a second order and no more than a sixth order for expressing a relationship between a transmissivity and a frequency, and controlling the characteristic through driving a controlled pixel of the frequency selecting element based on the function.
    Type: Application
    Filed: August 13, 2012
    Publication date: April 11, 2013
    Applicant: SANTEC CORPORATION
    Inventors: Sachiko Michihata, Yuji Hotta
  • Publication number: 20120154342
    Abstract: The LCOS element driving circuit is provided with a plurality of D/A converters for effecting D/A conversion on pixel data which is fed to each pixel of a LCOS element on a pixel group-by-pixel group basis and delay devices for delaying clock signals to provide timing for each D/A conversion operation. The clocks to be fed to the respective D/A converters are delayed via the delay devices to cause variation in delay time, so that output pixel signals from the D/A converters can be applied to the LCOS element in a synchronized state. This makes it possible to drive the LCOS element at high speed.
    Type: Application
    Filed: February 9, 2011
    Publication date: June 21, 2012
    Inventor: Yuji Hotta
  • Publication number: 20120154893
    Abstract: In a wavelength selection element employed in an optically variable filter array apparatus, pixels in a line form are placed into a light reflection state so that wavelength-scanned light can be incident on the optically variable filter array apparatus. On the basis of the wavelength of scanned reflection light and the location of the pixel in a light reflection state at a timing of acquisition of output, the relationship between the x coordinate of the wavelength selection element and wavelength is determined. This makes it possible to achieve calibration of the optically variable filter array apparatus capable of selection of a desired wavelength with respect to a desired channel from multi-channel WDM light.
    Type: Application
    Filed: February 2, 2011
    Publication date: June 21, 2012
    Inventor: Yuji HOTTA