Patents by Inventor Koujirou Sekine

Koujirou Sekine 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: 20210103013
    Abstract: A magnetic sensor includes a plurality of magnetoresistive element units. Each of the magnetoresistive element units includes a flat-surface-type first magnetoresistive element having a detection axis in a first direction and a flat-surface-type second magnetoresistive element having a detection axis in a second direction different from the first direction. The first magnetoresistive element and the second magnetoresistive element are arranged so as to face each other. The plurality of magnetoresistive element units are arrayed in a direction orthogonal to flat surfaces of the first magnetoresistive element and the second magnetoresistive element. The surfaces facing a measurement sample constitute a surface parallel to the direction in which the magnetoresistive element units are arrayed.
    Type: Application
    Filed: April 24, 2018
    Publication date: April 8, 2021
    Applicant: Konica Minolta, Inc.
    Inventors: Junichi JONO, Koujirou SEKINE, Masaaki TSUCHIDA
  • Publication number: 20210036384
    Abstract: A non-destructive inspection method of inspecting an inspection target using multiple different types of non-destructive inspection means that include one non-destructive inspection means and at least one other non-destructive inspection means. The method includes determining a marking position on the inspection target in a detection result by the one non-destructive inspection means, causing a device to store the marking position, and fixedly forming a mark on the inspection target corresponding to the marking position. The mark is detectable by the other non-destructive inspection means. The method further includes causing the other non-destructive inspection means to inspect an inspection target including the mark. The method further includes contrasting detection results by the multiple different types of non-destructive inspection means in reference to the mark which is the marking position.
    Type: Application
    Filed: September 10, 2018
    Publication date: February 4, 2021
    Applicant: Konica Minolta, Inc.
    Inventors: Masahiro IMADA, Takuji HATANO, Koujirou SEKINE, Masaaki TSUCHIDA, Tsukasa YAGI
  • Patent number: 10892402
    Abstract: Provided is a production method for a magnetoresistive element including treating a stacked layer into a predetermined shape. The stacked layer includes a magnetoresistive layer whose resistance changes depending on a magnetic field and a cap layer above the magnetoresistive layer and having a thickness in a range of 10 nm to 60 nm. The method further includes covering and protecting the stacked layer with an insulating layer, forming an opening in the insulating layer by reactive etching and exposing a surface of the cap layer at the opening, etching the cap layer in a range less than a total thickness of the cap layer by ion milling of the surface, and depositing an upper layer to be a part of the magnetoresistive element. The upper layer is in contact with the surface of the cap layer after the etching.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: January 12, 2021
    Assignees: KONICA MINOLTA, INC., TOHOKU UNIVERSITY
    Inventors: Yasuo Ando, Mikihiko Oogane, Kosuke Fujiwara, Junichi Jono, Koujirou Sekine, Masaaki Tsuchida
  • Patent number: 10727402
    Abstract: A method for producing a tunnel magnetoresistive element includes a stacking step, then in-magnetic field heating, and then dry etching. The stacking includes stacking a B absorption layer which is in contact with an upper surface of a CoFeB layer. The dry etching includes removal of layers to the B absorption layer. An end of etching is set as an end point time detected by an analysis device when a final layer before the B absorption layer directly above the CoFeB layer is exposed has reduced to a prescribed level, or when the B absorption layer directly above the CoFeB layer has increased to the prescribed level. An amount of over-etching after the end point time is specified in advance, and the B absorption layer is stacked such that the thickness from the prescribed level to the upper surface of the CoFeB layer corresponds to the over-etching amount.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: July 28, 2020
    Assignees: TOHOKU UNIVERSITY, KONICA MINOLTA, INC.
    Inventors: Yasuo Ando, Mikihiko Oogane, Kosuke Fujiwara, Koujirou Sekine, Junichi Jono, Masaaki Tsuchida
  • Publication number: 20200229782
    Abstract: A non-destructive inspection method for inspecting an object to be inspected using a plurality of different types of non-destructive inspection means is shown. The method includes the following, fixedly forming common marks that can be detected by any of the plurality of non-destructive inspection means on the object to be inspected; then detecting the object to be inspected including the marks by the plurality of non-destructive inspection means respectively; and comparing the detection results by the plurality of non-destructive inspection means using the marks as positional references.
    Type: Application
    Filed: September 7, 2018
    Publication date: July 23, 2020
    Applicant: Konica Minolta, Inc.
    Inventors: Masahiro IMADA, Takuji HATANO, Koujirou SEKINE, Masaaki TSUCHIDA, Tsukasa YAGI
  • Patent number: 10541382
    Abstract: Provided is an electroluminescent device that emits light of a single color and includes a plurality of functional layers, in which an absorption peak is included in the emission wavelength and at least one absorption peak is included in a complementary color region of an emission wavelength in the range of 380 nm to 780 nm, an absolute value of a deviation (?uv) of a color coordinate of front reflected light at the time of white color illumination from a blackbody locus is below 0.02, and a refractive index and a film thickness of each of the plurality of functional layers are determined to satisfy the formula D(?)?D(0)cos ? (0????D?60 degrees) when an angle dependence of emission intensity is defined as D(?).
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: January 21, 2020
    Assignee: KONICA MINOLTA, INC.
    Inventors: Kou Osawa, Koujirou Sekine, Naoki Kimura
  • Publication number: 20190393411
    Abstract: A method for producing a tunnel magnetoresistive element includes a stacking step, then in-magnetic field heating, and then dry etching. The stacking includes stacking a B absorption layer which is in contact with an upper surface of a CoFeB layer. The dry etching includes removal of layers to the B absorption layer. An end of etching is set as an end point time detected by an analysis device when a final layer before the B absorption layer directly above the CoFeB layer is exposed has reduced to a prescribed level, or when the B absorption layer directly above the CoFeB layer has increased to the prescribed level. An amount of over-etching after the end point time is specified in advance, and the B absorption layer is stacked such that the thickness from the prescribed level to the upper surface of the CoFeB layer corresponds to the over-etching amount.
    Type: Application
    Filed: January 17, 2018
    Publication date: December 26, 2019
    Applicants: TOHOKU UNIVERSITY, KONICA MINOLTA, INC.
    Inventors: Yasuo ANDO, Mikihiko OOGANE, Kosuke FUJIWARA, Koujirou SEKINE, Junichi JONO, Masaaki TSUCHIDA
  • Publication number: 20190348599
    Abstract: Provided is a production method for a magnetoresistive element including treating a stacked layer into a predetermined shape. The stacked layer includes a magnetoresistive layer whose resistance changes depending on a magnetic field and a cap layer above the magnetoresistive layer and having a thickness in a range of 10 nm to 60 nm. The method further includes covering and protecting the stacked layer with an insulating layer, forming an opening in the insulating layer by reactive etching and exposing a surface of the cap layer at the opening, etching the cap layer in a range less than a total thickness of the cap layer by ion milling of the surface, and depositing an upper layer to be a part of the magnetoresistive element. The upper layer is in contact with the surface of the cap layer after the etching.
    Type: Application
    Filed: January 16, 2018
    Publication date: November 14, 2019
    Inventors: Yasuo ANDO, Mikihiko OOGANE, Kosuke FUJIWARA, Junichi JONO, Koujirou SEKINE, Masaaki TSUCHIDA
  • Publication number: 20190288227
    Abstract: Provided is an organic electro-luminescence emission device wherein a color adjustment layer causes the chroma C* of transmitted light from the organic electro-luminescence emission device when not emitting light to be less than that of transmitted light from an organic electro-luminescence emission device not having a color adjustment layer when not emitting light, thus allowing the chroma of the transmitted light at non-emitting time to approach 0.
    Type: Application
    Filed: July 21, 2017
    Publication date: September 19, 2019
    Inventors: Shigeru KOJIMA, Shusaku KON, Takaaki KUROKI, Takeshi HAKII, Koujirou SEKINE, Kou OSAWA
  • Publication number: 20190036081
    Abstract: Provided is an electroluminescent device that emits light of a single color and includes a plurality of functional layers, in which an absorption peak is included in the emission wavelength and at least one absorption peak is included in a complementary color region of an emission wavelength in the range of 380 nm to 780 nm, an absolute value of a deviation (?uv) of a color coordinate of front reflected light at the time of white color illumination from a blackbody locus is below 0.02, and a refractive index and a film thickness of each of the plurality of functional layers are determined to satisfy the formula D(?)?D(0)cos ? (0????D?60 degrees) when an angle dependence of emission intensity is defined as D(?).
    Type: Application
    Filed: August 29, 2016
    Publication date: January 31, 2019
    Inventors: KOU OSAWA, KOUJIROU SEKINE, NAOKI KIMURA
  • Patent number: 10115932
    Abstract: A method of designing an electroluminescent device includes preparing a reference device including a construction of an electroluminescent device and a desired analyzed device including a construction of an electroluminescent device, performing quantum optical analysis, electromagnetic field analysis, and ray trace with thicknesses and complex relative permittivities of a first transparent member, a first electrode, a first functional layer, a second functional layer, an emissive layer, and a second electrode as well as a position of a light-emitting point in the emissive layer and a distribution of light-emitting points in the emissive layer being used as design variables, calculating a “ratio of light extraction efficiency” between the reference device and the analyzed device by computing efficiency of light extraction from the emissive layer into the transparent member or air in both of the reference device and the analyzed device, finding relation of the thickness and the complex relative permittivity of
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: October 30, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Kou Osawa, Koujirou Sekine, Mitsuru Yokoyama
  • Patent number: 10094534
    Abstract: A surface-emitting unit includes a surface-emitting panel which emits light, a transmissive member which is arranged to face a light-emitting surface, propagates light emitted from the surface-emitting panel as being reflected therein, and allows light to exit from a light exit surface, and a scattering sheet which is provided to face a light exit surface of the transmissive member and scatters light. The transmissive member has a dimming surface provided between a light incident surface on which light emitted from the surface-emitting panel is incident and the light exit surface. The light-emitting surface has a light-emitting region which emits light and a non-light-emitting region which does not emit light. The dimming surface is configured such that a region facing the non-light-emitting region is different in transmittance of light from a region facing the light-emitting region, in accordance with a distribution of light emitted from each of the surface-emitting panels.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: October 9, 2018
    Assignee: Konica Minolta, Inc.
    Inventors: Yusuke Hirao, Koujirou Sekine
  • Publication number: 20180138460
    Abstract: A method of designing an electroluminescent device includes preparing a reference device including a construction of an electroluminescent device and a desired analyzed device including a construction of an electroluminescent device, performing quantum optical analysis, electromagnetic field analysis, and ray trace with thicknesses and complex relative permittivities of a first transparent member, a first electrode, a first functional layer, a second functional layer, an emissive layer, and a second electrode as well as a position of a light-emitting point in the emissive layer and a distribution of light-emitting points in the emissive layer being used as design variables, calculating a “ratio of light extraction efficiency” between the reference device and the analyzed device by computing efficiency of light extraction from the emissive layer into the transparent member or air in both of the reference device and the analyzed device, finding relation of the thickness and the complex relative permittivity of
    Type: Application
    Filed: December 28, 2017
    Publication date: May 17, 2018
    Inventors: Kou OSAWA, Koujirou SEKINE, Mitsuru YOKOYAMA
  • Patent number: 9893324
    Abstract: A method of designing an electroluminescent device allows more accurate computation of an external emission spectrum output to the outside in a current injection state and accurate estimate of a quantity and/or a color of light extracted to the outside, an electroluminescent device manufactured with the design method, and a method of manufacturing an electroluminescent device with the design method.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: February 13, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Kou Osawa, Koujirou Sekine, Mitsuru Yokoyama
  • Patent number: 9869808
    Abstract: A planar light-emitting unit includes a light emission region and a non-light emission region located in an outer periphery of the light emission region. A non-space region is provided between a light guide member and a diffusion member in a region corresponding to the non-light emission region such that a space is formed in a region corresponding to the light emission region between the light guide member and the diffusion member. The non-space region includes a protruding region extending to the light emission region from the non-light emission region, and a conditional expression 0<??2d×tan ? is fulfilled, where ? is a protruding amount (mm) from the non-light emission region of the non-space region, d is a thickness (mm) of the light guide member, and ? is a total reflection critical angle between the light guide member and air.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: January 16, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Naoki Kimura, Yusuke Hirao, Koujirou Sekine
  • Patent number: 9806294
    Abstract: A surface light emitting element includes a light emitting layer that emits light, a first electrode layer that is provided on the side of the light emitting layer from which the light is extracted and allows the light that has been emitted by the light emitting layer to pass through, a second electrode layer that is provided on the side of the light emitting layer from which light is not extracted, a light scattering layer that is provided on the side of the first electrode layer opposite to the side on which the light emitting layer is positioned, and a transparent substrate that is provided on the side of the light scattering layer opposite to the side on which the light emitting layer is positioned, wherein a conductive material in which the real part of a complex dielectric constant is negative is used in the first electrode layer.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: October 31, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventor: Koujirou Sekine
  • Publication number: 20170179443
    Abstract: A method of designing an electroluminescent device allows more accurate computation of an external emission spectrum output to the outside in a current injection state and accurate estimate of a quantity and/or a color of light extracted to the outside, an electroluminescent device manufactured with the design method, and a method of manufacturing an electroluminescent device with the design method.
    Type: Application
    Filed: June 2, 2015
    Publication date: June 22, 2017
    Inventors: Kou OSAWA, Koujirou SEKINE, Mitsuru YOKOYAMA
  • Publication number: 20170123137
    Abstract: A planar light-emitting unit includes a light emission region and a non-light emission region located in an outer periphery of the light emission region. A non-space region is provided between a light guide member and a diffusion member in a region corresponding to the non-light emission region such that a space is formed in a region corresponding to the light emission region between the light guide member and the diffusion member. The non-space region includes a protruding region extending to the light emission region from the non-light emission region, and a conditional expression 0<??2d×tan? is fulfilled, where ? is a protruding amount (mm) from the non-light emission region of the non-space region, d is a thickness (mm) of the light guide member, and ? is a total reflection critical angle between the light guide member and air.
    Type: Application
    Filed: March 17, 2015
    Publication date: May 4, 2017
    Inventors: Naoki KIMURA, Yusuke HIRAO, Koujirou SEKINE
  • Publication number: 20160359143
    Abstract: An electroluminescent device in which two or more light-emitting units which emit light identical in color are vertically stacked is configured such that a first relative maximal angle or a highest intensity angle viewed in a front direction of angular dependency of emission intensity in light emission from each light-emitting unit alone is different for each light-emitting unit, and D(?)?D(0)cos ?(0????D?60 degrees) . . . Expression (1) is satisfied, where D(?) represents angular dependency of emission intensity and ?D represents a specific angle in simultaneous light emission from all light-emitting units.
    Type: Application
    Filed: June 2, 2016
    Publication date: December 8, 2016
    Applicant: KONICA MINOLTA, INC.
    Inventors: Kou OSAWA, Koujirou SEKINE
  • Publication number: 20160327231
    Abstract: A surface-emitting unit includes a surface-emitting panel which emits light, a transmissive member which is arranged to face a light-emitting surface, propagates light emitted from the surface-emitting panel as being reflected therein, and allows light to exit from a light exit surface, and a scattering sheet which is provided to face a light exit surface of the transmissive member and scatters light. The transmissive member has a dimming surface provided between a light incident surface on which light emitted from the surface-emitting panel is incident and the light exit surface. The light-emitting surface has a light-emitting region which emits light and a non-light-emitting region which does not emit light. The dimming surface is configured such that a region facing the non-light-emitting region is different in transmittance of light from a region facing the light-emitting region, in accordance with a distribution of light emitted from each of the surface-emitting panels.
    Type: Application
    Filed: November 6, 2014
    Publication date: November 10, 2016
    Inventors: Yusuke HIRAO, Koujirou SEKINE