Patents by Inventor Shigetoshi Nakamura
Shigetoshi Nakamura 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).
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Publication number: 20170167802Abstract: This heat receiving tile formed of CFC is provided with a heat receiving block formed of a carbon fiber composite material and having a through hole, a cooling pipe inserted through the through hole of the heat receiving block, a buffer material provided to an outer periphery of the cooling pipe, a first brazing portion joining an inner surface of the through hole with an outer surface of the buffer material, a second brazing portion joining an inner surface of the buffer material with an outer surface of the cooling pipe, and a material discontinuous portion extending from a heat receiving surface of the heat receiving block up to the outer surface of the cooling pipe over a full length of the heat receiving block in an axis direction of the through hole.Type: ApplicationFiled: February 5, 2015Publication date: June 15, 2017Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Hirokazu YAMADA, Kouji SATOU, Daigo TSURU, Shinji SAKURAI, Shigetoshi NAKAMURA
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Publication number: 20170090421Abstract: An image recording device includes a laser beam source that emits a laser beam, a splitting unit that splits the laser beam emitted from the laser beam source into two laser beams, a display device that displays images over a display area thereof divided into segments, a display controller that controls display of the display device so that images for forming a holographic stereogram are displayed on the segments of the display area and so that one of the laser beams is modulated by the images displayed on the display device to become object beams, an optical system that images the object beams on a hologram recording medium so that the object beams are superimposed one on top of another, and an irradiating unit that irradiates the hologram recording medium with, besides the object beams, the other laser beam split by the splitting unit as a reference beam.Type: ApplicationFiled: February 25, 2016Publication date: March 30, 2017Applicant: FUJI XEROX CO., LTD.Inventors: Jiro MINABE, Yasuhiro OGASAWARA, Shigetoshi NAKAMURA, Takashi KIKUCHI, Masahiro IGUSA, Motohiko SAKAMAKI
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Publication number: 20170038729Abstract: A holographic-stereogram-forming apparatus includes a laser beam source that generates a laser beam to be split into an object beam and a reference beam; a display that displays an original image corresponding to a substantially strip-shaped holographic element constituting a holographic stereogram containing parallax information in a horizontal direction; a diffusing unit provided on a light-emission side of the display and including optical elements having different thicknesses in a direction of light transmission, the optical elements being arranged in a matrix and each having a substantially rectangular shape with a vertical length being shorter than a horizontal length, the diffusing unit diffusing object beam more widely in the vertical direction than in the horizontal direction, the object beam to be diffused by the diffusing unit being generated by the display; and a condensing unit that condenses the object beam diffused by the diffusing unit on a hologram recording medium.Type: ApplicationFiled: January 27, 2016Publication date: February 9, 2017Applicant: FUJI XEROX CO., LTD.Inventors: Yasuhiro OGASAWARA, Jiro MINABE, Shigetoshi NAKAMURA, Takashi KIKUCHI, Masahiro IGUSA, Motohiko SAKAMAKI
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Publication number: 20160116227Abstract: A heat receiving block formed of carbon material having a through hole; a cooling tube formed of copper alloy fitted in the through hole of the heat receiving block; cylindrical material of interlayer disposed between the heat receiving block and the cooling tube; and brazing material layers inserted between the material of interlayer and the heat receiving block and between the material of interlayer and the cooling tube, also a slit which penetrates the heat receiving block and the material of interlayer over thickness of the heat receiving block and reaches the cooling tube on the back side of the heat receiving surface. It can provide heat receiving tile formed of carbon fiber composite material for high heat flux component such as a first wall of nuclear fusion reactor, which is produced by metallurgically joining carbon material with copper alloy and has higher cooling efficiency than conventional heat receiving tiles.Type: ApplicationFiled: May 14, 2014Publication date: April 28, 2016Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Hirokazu YAMADA, Yuuichirou MORI, Kouji SATOU, Kiyotaka MATSUNAMI, Yasutaka MAEDA, Tamotsu NAKAE, Makoto KUBOTA, Shinji SAKURAI, Shigetoshi NAKAMURA, Hidetsugu OZAKI
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Patent number: 8371756Abstract: A journal bearing includes a bearing platform, a cylindrical bearing housing supported by the bearing platform via a plurality of load supporting members, a plurality of pads located swingable in the bearing housing so that a journal of a rotation shaft is supported by the pads, an oil supply mechanism for supplying oil to the bearing surfaces of the pads, and a connecting member which has an oil hole to communicate an oil supply passage in the bearing platform with an oil supply passage in the bearing housing so that oil is supplied from the bearing platform to the bearing surfaces of the pads. The connecting member carries a part of a bearing load exerted from the bearing housing, and is mounted such that the part of the bearing load carried by the connecting member is smaller than a bearing load carried by one of the load supporting members.Type: GrantFiled: November 12, 2009Date of Patent: February 12, 2013Assignees: Mitsubishi Heavy Industries, Ltd., Daido Metal Co., Ltd.Inventors: Yuichiro Waki, Takashi Nakano, Takaaki Kaikogi, Motohisa Uesato, Shigetoshi Nakamura
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Publication number: 20120212566Abstract: A light emitting component includes plural of light emitting elements arranged in rows on a substrate, plural lenses provided to face light emitting faces to which light beams of the plural light emitting elements are emitted, and condensing the light beams emitted from the light emitting elements, and one or plural pedestals holding the lenses such that the light emitting faces of the respective light emitting elements of the plural light emitting elements and the lenses that face the light emitting elements face the light emitting faces via gaps.Type: ApplicationFiled: July 22, 2011Publication date: August 23, 2012Applicant: FUJI XEROX CO., LTD.Inventors: Takashi KIKUCHI, Roshan THAPLIYA, Shigetoshi NAKAMURA
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Patent number: 8200052Abstract: There is provided an optical device including: a passive core layer in which is formed an optical circuit having a refractive index n2; an active core layer covering at least a portion of the optical circuit, exhibiting an electro-optical effect, and having a refractive index of n1 higher than n2; a lower clad layer over which the passive core layer is formed and having a refractive index n3 lower than n2; an upper clad layer covering the active and passive core layers and having a refractive index n5 lower than n1; a lower electrode disposed below the lower clad layer; and an upper electrode disposed on the upper clad layer, in which the entrance and exit portions of the active core layer are tapered, respectively.Type: GrantFiled: November 12, 2009Date of Patent: June 12, 2012Assignee: Fuji Xerox Co., Ltd.Inventors: Roshan Thapliya, Shigetoshi Nakamura, Takashi Kikuchi, Kazuhiro Hayashi
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Patent number: 8107778Abstract: There is provided a method of producing a waveguide element comprising steps of forming a lower cladding layer having a refractive index n1 on a substrate having a lower electrode; forming an active core layer having a refractive index n2 and exhibiting an electro-optical effect on a surface of the lower cladding layer; forming a protective layer having a reflective index n4 on a surface of the active core layer; forming a passive core layer having a reflective index n3 on a surface of the protective layer; exposing the passive core layer with a predetermined pattern to form an optical circuit; forming an upper cladding layer on a surface of the passive core layer; forming an upper electrode on a surface of the upper cladding layer; and performing a polarization orientation treatment in which the active core layer is softened or liquidized and cured while the electric field is applied.Type: GrantFiled: September 14, 2009Date of Patent: January 31, 2012Assignee: Fuji Xerox Co., Ltd.Inventors: Takashi Kikuchi, Roshan Thapliya, Shigetoshi Nakamura
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Publication number: 20100265503Abstract: There is provided an optical device including: a passive core layer in which is formed an optical circuit having a refractive index n2; an active core layer covering at least a portion of the optical circuit, exhibiting an electro-optical effect, and having a refractive index of n1 higher than n2; a lower clad layer over which the passive core layer is formed and having a refractive index n3 lower than n2; an upper clad layer covering the active and passive core layers and having a refractive index n5 lower than n1; a lower electrode disposed below the lower clad layer; and an upper electrode disposed on the upper clad layer, in which the entrance and exit portions of the active core layer are tapered, respectively.Type: ApplicationFiled: November 12, 2009Publication date: October 21, 2010Applicant: FUJI XEROX CO., LTD.Inventors: Roshan THAPLIYA, Shigetoshi NAKAMURA, Takashi KIKUCHI, Kazuhiro HAYASHI
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Publication number: 20100226605Abstract: There is provided a method of producing a waveguide element comprising steps of forming a lower cladding layer having a refractive index n1 on a substrate having a lower electrode; forming an active core layer having a refractive index n2 and exhibiting an electro-optical effect on a surface of the lower cladding layer; forming a protective layer having a reflective index n4 on a surface of the active core layer; forming a passive core layer having a reflective index n3 on a surface of the protective layer; exposing the passive core layer with a predetermined pattern to form an optical circuit; forming an upper cladding layer on a surface of the passive core layer; forming an upper electrode on a surface of the upper cladding layer; and performing a polarization orientation treatment in which the active core layer is softened or liquidized and cured while the electric field is applied.Type: ApplicationFiled: September 14, 2009Publication date: September 9, 2010Applicant: FUJI XEROX CO., LTD.Inventors: Takashi KIKUCHI, Roshan THAPLIYA, Shigetoshi NAKAMURA
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Patent number: 7747128Abstract: A waveguide device includes a substrate and a first electrode, a first cladding layer, a waveguide, a second cladding layer, and a second electrode sequentially provided on the substrate. At least one of the first cladding layer, the waveguide, and second cladding layer includes a ligand compound which is capable of coordinating to a metal or metal ion.Type: GrantFiled: March 25, 2008Date of Patent: June 29, 2010Assignee: Fuji Xerox Co., Ltd.Inventors: Takashi Kikuchi, Roshan Thapliya, Shigetoshi Nakamura
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Publication number: 20100142870Abstract: A journal bearing which can be constructed without leading to decrease in rigidity and increase in size, in which lubrication oil can be supplied to the bearing surfaces of the pads with certainty.Type: ApplicationFiled: November 12, 2009Publication date: June 10, 2010Inventors: Yuichiro WAKI, Takashi Nakano, Takaaki Kaikogi, Motohisa Uesato, Shigetoshi Nakamura
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Patent number: 7639913Abstract: An optical waveguide element includes: an optical waveguide including an organic non-linear optical material; a first electrode arranged on one surface side of the optical waveguide; a second electrode arranged on another surface side of the optical waveguide; a protective member disposed on the second electrode, the protective member including (i) a third electrode which is provided on a first surface of the protective member, the first surface facing the second electrode, the third electrode being electrically connected to the second electrode, (ii) a fourth electrode which is provided on a second surface of the protective member, the second surface opposing the first surface, and (iii) a conductive portion which penetrates through the protective member from the first surface to the second surface, and electrically connects the third electrode and the fourth electrode.Type: GrantFiled: August 13, 2008Date of Patent: December 29, 2009Assignee: Fuji Xerox Co., Ltd.Inventors: Shigetoshi Nakamura, Takashi Kikuchi, Roshan Thapliya
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Publication number: 20090148111Abstract: An optical waveguide element includes: an optical waveguide including an organic non-linear optical material; a first electrode arranged on one surface side of the optical waveguide; a second electrode arranged on another surface side of the optical waveguide; a protective member disposed on the second electrode, the protective member including (i) a third electrode which is provided on a first surface of the protective member, the first surface facing the second electrode, the third electrode being electrically connected to the second electrode, (ii) a fourth electrode which is provided on a second surface of the protective member, the second surface opposing the first surface, and (iii) a conductive portion which penetrates through the protective member from the first surface to the second surface, and electrically connects the third electrode and the fourth electrode.Type: ApplicationFiled: August 13, 2008Publication date: June 11, 2009Applicant: FUJI XEROX CO., LTD.Inventors: Shigetoshi NAKAMURA, Takashi KIKUCHI, Roshan Thapliya
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Publication number: 20090060434Abstract: A waveguide device includes a substrate and a first electrode, a first cladding layer, a waveguide, a second cladding layer, and a second electrode sequentially provided on the substrate. At least one of the first cladding layer, the waveguide, and second cladding layer includes a ligand compound which is capable of coordinating to a metal or metal ion.Type: ApplicationFiled: March 25, 2008Publication date: March 5, 2009Applicant: FUJI XEROX CO., LTD.Inventors: Takashi KIKUCHI, Roshan Thapliya, Shigetoshi Nakamura
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Publication number: 20090046977Abstract: A waveguide device comprises a first multimode waveguide; a second multimode waveguide; a pair of intermediate single mode waveguides; an input-side single mode waveguides connected to the first multimode waveguide; a pair of output-side single mode waveguides connected to the second multimode waveguide; a pair of switching electrodes disposed to be superposed on the pair of intermediate single mode waveguides; and a ground electrode. The intermediate single mode waveguides are configured by a material whose refractive index is changed by voltages applied to the switching electrodes, the first multimode waveguide splits an optical signal into two signals whose intensities are equal, and the second multimode waveguide is formed, when voltages are not applied to the switching electrodes, to guide the optical signals out from the output-side single mode waveguides that are provided positions diagonal to the intermediate single mode waveguides through which the optical signals are propagated.Type: ApplicationFiled: April 8, 2008Publication date: February 19, 2009Applicant: FUJI XEROX CO., LTD.Inventors: Roshan Thapliya, Takashi Kikuchi, Shigetoshi Nakamura
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Patent number: 7450788Abstract: An optical splitter/coupler has: a multimode waveguide having an electrooptic effect, and propagating light in a multimode; one incident waveguide propagating light in a single mode, and inputting the light to the multimode waveguide; one pair of emitting waveguides guiding-out, in a single mode, lights which have propagated-in through the multimode waveguide; at least one pair of individual electrodes provided so as to be positioned in vicinities of respective side edges on one surface of the multimode waveguide; and a ground electrode provided on another surface, wherein the multimode waveguide has a length such that 3(n+1) bright spots arise at a central portion and at both side edge portions due to incident light, the individual electrodes are provided at positions corresponding to an upstream-most one pair of the bright spots, and the emitting waveguides are connected to positions corresponding to a downstream-most one pair of the bright spots.Type: GrantFiled: June 1, 2007Date of Patent: November 11, 2008Assignee: Fuji Xerox Co., Ltd.Inventors: Roshan Thapliya, Takashi Kikuchi, Shigetoshi Nakamura
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Publication number: 20080260322Abstract: An optical splitter/coupler has: a multimode waveguide having an electrooptic effect, and propagating light in a multimode; one incident waveguide propagating light in a single mode, and inputting the light to the multimode waveguide; one pair of emitting waveguides guiding-out, in a single mode, lights which have propagated-in through the multimode waveguide; at least one pair of individual electrodes provided so as to be positioned in vicinities of respective side edges on one surface of the multimode waveguide; and a ground electrode provided on another surface, wherein the multimode waveguide has a length such that 3(n+1) bright spots arise at a central portion and at both side edge portions due to incident light, the individual electrodes are provided at positions corresponding to an upstream-most one pair of the bright spots, and the emitting waveguides are connected to positions corresponding to a downstream-most one pair of the bright spots.Type: ApplicationFiled: June 1, 2007Publication date: October 23, 2008Inventors: Roshan Thapliya, Takashi Kikuchi, Shigetoshi Nakamura
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Patent number: 7403678Abstract: An optical switching element comprising: a multimode waveguide having an electro-optical effect; one or a plurality of first single mode waveguides; a plurality of second single mode waveguides; a first electrode arranged in the vicinity of one edge on one side of the multimode waveguide; a second electrode arranged in the vicinity of the other edge on the same side of the multimode waveguide; and a third electrode arranged on the other side of the multimode waveguide, over the first electrode and the second electrode being arranged so as to be positioned on bright spots formed by multimode interference in an optical mode field generated by the light propagating through the multimode waveguide, and an optical path being switched between the first single mode waveguide and the second single mode waveguide by applying voltage between the first electrode and the third electrode and between the second electrode and the third electrode, is provided.Type: GrantFiled: November 29, 2006Date of Patent: July 22, 2008Assignee: Fuji Xerox Co., Ltd.Inventors: Roshan Thapliya, Shigetoshi Nakamura, Takashi Kikuchi
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Publication number: 20070263953Abstract: An optical switching element comprising: a multimode waveguide having an electro-optical effect; one or a plurality of first single mode waveguides; a plurality of second single mode waveguides; a first electrode arranged in the vicinity of one edge on one side of the multimode waveguide; a second electrode arranged in the vicinity of the other edge on the same side of the multimode waveguide; and a third electrode arranged on the other side of the multimode waveguide, over the first electrode and the second electrode being arranged so as to be positioned on luminescent spots in an optical mode field generated by the light propagating through the multimode waveguide, and an optical path being switched between the first single mode waveguide and the second single mode waveguide by applying voltage between the first electrode and the third electrode and between the second electrode and the third electrode, is provided.Type: ApplicationFiled: November 29, 2006Publication date: November 15, 2007Applicant: FUJI XEROX CO., LTD.Inventors: Roshan Thapliya, Shigetoshi Nakamura, Takashi Kikuchi