Patents by Inventor Kenta SEKIKAWA

Kenta SEKIKAWA 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: 20210284827
    Abstract: Problem to be Solved The present invention provides a conjugated diene-based polymer composition excellent in rolling resistance, grip performance on a wet road surface, and abrasion resistance when formed into a tire. Solution A conjugated diene-based polymer composition containing: 10 to 90 parts by mass of a conjugated diene-based polymer (A) having a glass transition temperature of ?20° C. or more; and 10 to 90 parts by mass of a conjugated diene-based polymer (B) having a glass transition temperature of ?25° C. or less, wherein the conjugated diene-based polymer (A) has an absolute molecular weight, measured by viscosity detector-equipped GPC-light scattering measurement, of 40×104 or more and 5000×104 or less, and a branch number (Bn), measured by the viscosity detector-equipped GPC-light scattering measurement, of 8 or more.
    Type: Application
    Filed: March 9, 2021
    Publication date: September 16, 2021
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Shogo Sumitani, Shinichi Sekikawa, Kenta Hisamura, Yoshifumi Araki
  • Patent number: 11054559
    Abstract: A reflective transparent screen (1) capable of displaying an image light projected from a projector as an image to an observer who is on the same side as the projector, is provided with two transparent substrates and a metal thin film (23) sandwiched therebetween, wherein the color tone of the image light reflected from the metal thin film (23) or the image visibility is improved by adjusting the metallic composition of the metal thin film (23).
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: July 6, 2021
    Assignee: AGC Inc.
    Inventors: Yasushi Kawamoto, Yukihiro Tao, Yoko Mitsui, Yuko Tachibana, Kenta Sekikawa
  • Patent number: 10852632
    Abstract: A transparent screen sheet that displays images projected from a front side of the transparent screen sheet and/or a rear side of the transparent screen sheet to a user on the front side, and causes the user on the front side to view a rear background behind the rear side. The transparent screen sheet includes an image display layer configured to display the images; and a resin film that holds the image display layer. A difference between a maximum value and a minimum value of retardations of the resin film measured by irradiating a main surface of the resin film with a light with a wavelength of 460 nm in a direction orthogonal to the main surface, within a region on the main surface that overlaps with the image display layer, is one fourth of the wavelength of the light or less.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: December 1, 2020
    Assignee: AGC Inc.
    Inventors: Yukihiro Tao, Kenta Sekikawa, Yuriko Kaida
  • Patent number: 10732329
    Abstract: To provide an image projecting structure having a wide viewing angle and whereby the visibility of a projected image is high. The image projecting structure comprises a first transparent layer having irregularities formed on its surface, a reflective film formed on the surface on which the irregularities are formed, of the first transparent layer, and a second transparent layer formed on the reflective film, wherein the transmittance of visible light is from 5 to 95%; the value obtained by dividing the haze by the diffuse reflectance of visible light is at least 0.1 and at most 1; the vertical difference Sk in the core section defined by ISO 25178, of the surface on which the irregularities are formed, is at least 0.1 ?m; and the value obtained by dividing the shortest autocorrelation length Sal by the vertical difference Sk in the core section is at least 1.2 and at most 190.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: August 4, 2020
    Assignee: AGC Inc.
    Inventors: Yuko Tachibana, Yukihiro Tao, Kenta Sekikawa
  • Publication number: 20180292587
    Abstract: A reflective transparent screen (1) capable of displaying an image light projected from a projector as an image to an observer who is on the same side as the projector, is provided with two transparent substrates and a metal thin film (23) sandwiched therebetween, wherein the color tone of the image light reflected from the metal thin film (23) or the image visibility is improved by adjusting the metallic composition of the metal thin film (23).
    Type: Application
    Filed: June 7, 2018
    Publication date: October 11, 2018
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Yasushi KAWAMOTO, Yukihiro TAO, Yoko MITSUI, Yuko TACHIBANA, Kenta SEKIKAWA
  • Publication number: 20180275505
    Abstract: A transparent screen sheet that displays images projected from a front side of the transparent screen sheet and/or a rear side of the transparent screen sheet to a user on the front side, and causes the user on the front side to view a rear background behind the rear side. The transparent screen sheet includes an image display layer configured to display the images; and a resin film that holds the image display layer. A difference between a maximum value and a minimum value of retardations of the resin film measured by irradiating a main surface of the resin film with a light with a wavelength of 460 nm in a direction orthogonal to the main surface, within a region on the main surface that overlaps with the image display layer, is one fourth of the wavelength of the light or less.
    Type: Application
    Filed: May 25, 2018
    Publication date: September 27, 2018
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Yukihiro TAO, Kenta Sekikawa, Yuriko Kaida
  • Publication number: 20180239066
    Abstract: To provide an image projecting structure having a wide viewing angle and whereby the visibility of a projected image is high. The image projecting structure comprises a first transparent layer having irregularities formed on its surface, a reflective film formed on the surface on which the irregularities are formed, of the first transparent layer, and a second transparent layer formed on the reflective film, wherein the transmittance of visible light is from 5 to 95%; the value obtained by dividing the haze by the diffuse reflectance of visible light is at least 0.1 and at most 1; the vertical difference Sk in the core section defined by ISO 25178, of the surface on which the irregularities are formed, is at least 0.1 ?m; and the value obtained by dividing the shortest autocorrelation length Sal by the vertical difference Sk in the core section is at least 1.2 and at most 190.
    Type: Application
    Filed: March 27, 2018
    Publication date: August 23, 2018
    Applicant: Asahi Glass Company, Limited
    Inventors: Yuko TACHIBANA, Yukihiro Tao, Kenta Sekikawa
  • Patent number: 9952494
    Abstract: A video projecting structure includes a substrate having a visible light transmittance greater than or equal to 5% and less than or equal to 90%, a reflectivity greater than or equal to 5% and less than or equal to 90%, and a front haze less than or equal to 30.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: April 24, 2018
    Assignee: Asahi Glass Company, Limited
    Inventors: Yukihiro Tao, Kenta Sekikawa, Hitoshi Tsujimura, Kenichi Ebata, Yuriko Kaida
  • Patent number: 9946147
    Abstract: To provide a transmission-type transparent screen which is excellent in the see-through property for a scene on the other side of the transparent screen as viewed from an observer in a state where no image-forming light is projected from a projector and which is excellent in visibility of an image displayed on the transparent screen as viewed from the observer in a state where image-forming light is projected from the projector, as well as an image display system and an image display method, employing the transparent screen. A transmission-type transparent screen 1 which has a first surface A and a second surface B on the opposite side thereof and which has a light scattering layer 34 comprising a transparent resin 32 and a light scattering material 33, wherein the light scattering layer 34 further contains a light absorbing material, the haze is from 3 to 30%, the total light transmittance is from 15 to 95%, and the diffuse reflectance is from 0.1 to 2.4%.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: April 17, 2018
    Assignee: Asahi Glass Company, Limited
    Inventors: Masamichi Ide, Yukihiro Tao, Kenta Sekikawa, Hitoshi Tsujimura, Yuriko Kaida
  • Patent number: 9921463
    Abstract: A video projecting structure includes a substrate having a visible light transmittance greater than or equal to 5% and less than or equal to 90%, a front haze greater than or equal to 4 and less than or equal to 40, and a rear haze greater than or equal to 0 and less than or equal to 60. In a case where light is incident on a surface of the substrate at an angle of 45°, an intensity of a backward scattering light is lower than an intensity of a frontward scattering light.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: March 20, 2018
    Assignee: Asahi Glass Company, Limited
    Inventors: Yukihiro Tao, Kenta Sekikawa, Hitoshi Tsujimura, Kenichi Ebata, Yuriko Kaida
  • Patent number: 9753196
    Abstract: The present invention relates to an optical filter, a solid-state imaging element and an imaging device lens which contain a near infrared ray absorbing layer having a specific near infrared ray absorbing dye dispersed in a transparent resin having a refractive index of 1.54 or more, and also relates to an imaging device containing the solid-state imaging element or the imaging device lens. The near infrared ray absorbing layer has a transmittance of visible light of from 450 to 600 nm of 70% or more, a transmittance of light in a wavelength region of from 695 to 720 nm of not more than 10%, and an amount of change of transmittance of not more than ?0.8.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: September 5, 2017
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Makoto Hasegawa, Satoshi Kashiwabara, Hiroshi Shimoda, Kenta Sekikawa, Takashi Shibuya, Mitsuo Osawa, Katsushi Kamijyo, Hiroyuki Arishima, Hiroshi Kumai
  • Publication number: 20170205701
    Abstract: To provide a transmission-type transparent screen which is excellent in the see-through property for a scene on the other side of the transparent screen as viewed from an observer in a state where no image-forming light is projected from a projector and which is excellent in visibility of an image displayed on the transparent screen as viewed from the observer in a state where image-forming light is projected from the projector, as well as an image display system and an image display method, employing the transparent screen. A transmission-type transparent screen 1 which has a first surface A and a second surface B on the opposite side thereof and which has a light scattering layer 34 comprising a transparent resin 32 and a light scattering material 33, wherein the light scattering layer 34 further contains a light absorbing material, the haze is from 3 to 30%, the total light transmittance is from 15 to 95%, and the diffuse reflectance is from 0.1 to 2.4%.
    Type: Application
    Filed: April 4, 2017
    Publication date: July 20, 2017
    Applicant: Asahi Glass Company, Limited
    Inventors: Masamichi IDE, Yukihiro Tao, Kenta Sekikawa, Hitoshi Tsujimura, Yuriko Kaida
  • Patent number: 9664830
    Abstract: An optical filter including a near infrared absorbing layer on a glass substrate, in which adhesiveness between the glass substrate and the near infrared absorbing layer is firm, high reliability is enabled in uses under a high temperature and high humidity environment, and manufacturing yield is secured, and a high reliability solid-state imaging device having the optical filter are provided. An optical filter includes: a glass substrate; and a near infrared absorbing layer formed on one principal surface of the glass substrate, wherein the near infrared absorbing layer is obtained by reacting a composition for forming the near infrared absorbing layer on the glass substrate and the composition contains a transparent resin having a fluorene skeleton and a reactivity group; a near infrared absorbing dye; and a silane coupling agent and/or oligomer thereof having a hydrolyzable group and a functional group which have reactivity for the reactivity group.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: May 30, 2017
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Makoto Hasegawa, Kenta Sekikawa, Satoshi Kashiwabara, Hiroshi Shimoda, Yuriko Kaida, Hiroshi Kumai
  • Publication number: 20170082915
    Abstract: A video projecting structure includes a substrate having a visible light transmittance greater than or equal to 5% and less than or equal to 90%, a reflectivity greater than or equal to 5% and less than or equal to 90%, and a front haze less than or equal to 30.
    Type: Application
    Filed: December 1, 2016
    Publication date: March 23, 2017
    Applicant: Asahi Glass Company, Limited
    Inventors: Yukihiro TAO, Kenta SEKIKAWA, Hitoshi TSUJIMURA, Kenichi EBATA, Yuriko KAIDA
  • Publication number: 20170075207
    Abstract: A video projecting structure includes a substrate having a visible light transmittance greater than or equal to 5% and less than or equal to 90%, a front haze greater than or equal to 4 and less than or equal to 40, and a rear haze greater than or equal to 0 and less than or equal to 60. In a case where light is incident on a surface of the substrate at an angle of 45° an intensity of a backward scattering light is lower than an intensity of a frontward scattering light.
    Type: Application
    Filed: November 25, 2016
    Publication date: March 16, 2017
    Applicant: Asahi Glass Company, Limited
    Inventors: Yukihiro TAO, Kenta SEKIKAWA, Hitoshi TSUJIMURA, Kenichi EBATA, Yuriko KAIDA
  • Publication number: 20160231482
    Abstract: The present invention relates to an optical filter, a solid-state imaging element and an imaging device lens which contain a near infrared ray absorbing layer having a specific near infrared ray absorbing dye dispersed in a transparent resin having a refractive index of 1.54 or more, and also relates to an imaging device containing the solid-state imaging element or the imaging device lens. The near infrared ray absorbing layer has a transmittance of visible light of from 450 to 600 nm of 70% or more, a transmittance of light in a wavelength region of from 695 to 720 nm of not more than 10%, and an amount of change of transmittance of not more than ?0.8.
    Type: Application
    Filed: January 11, 2016
    Publication date: August 11, 2016
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Makoto HASEGAWA, Satoshi KASHIWABARA, Hiroshi SHIMODA, Kenta SEKIKAWA, Takashi SHIBUYA, Mitsuo OSAWA, Katsushi KAMIJYO, Hiroyuki ARISHIMA, Hiroshi KUMAI
  • Patent number: 9268072
    Abstract: The present invention relates to an optical filter, a solid-state imaging element and an imaging device lens which contain a near infrared ray absorbing layer having a specific near infrared ray absorbing dye dispersed in a transparent resin having a refractive index of 1.54 or more, and also relates to an imaging device containing the solid-state imaging element or the imaging device lens. The near infrared ray absorbing layer has a transmittance of visible light of from 450 to 600 nm of 70% or more, a transmittance of light in a wavelength region of from 695 to 720 nm of not more than 10%, and an amount of change of transmittance of not more than ?0.8.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: February 23, 2016
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Makoto Hasegawa, Satoshi Kashiwabara, Hiroshi Shimoda, Kenta Sekikawa, Takashi Shibuya, Mitsuo Osawa, Katsushi Kamijyo, Hiroyuki Arishima, Hiroshi Kumai
  • Patent number: 8809103
    Abstract: A simple method that makes it possible to manufacture a highly-workable organic solar cell module having a plurality of connected organic solar cells is provided. The method includes: a first electrode substrate forming step of forming a plurality of first electrode layers on a first substrate to form a first electrode substrate; preparing a single piece of second electrode substrate-forming base material having at least a second electrode layer and capable of being cut into a plurality of second electrode substrates; a functional layer forming step; a cutting step to form a plurality of second electrode substrates; a bonding step so that the first and second electrode substrates are bonded together; and a connecting step of electrically connecting the first electrode layer of one of the organic solar cells to the second electrode layer of another organic solar cell which is adjacent to the one organic solar cell.
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: August 19, 2014
    Assignee: DAI Nippon Printing Co., Ltd.
    Inventors: Kenta Sekikawa, Satoshi Mitsuzuka, Miho Sasaki
  • Publication number: 20140091419
    Abstract: The present invention relates to an optical filter, a solid-state imaging element and an imaging device lens which contain a near infrared ray absorbing layer having a specific near infrared ray absorbing dye dispersed in a transparent resin having a refractive index of 1.54 or more, and also relates to an imaging device containing the solid-state imaging element or the imaging device lens. The near infrared ray absorbing layer has a transmittance of visible light of from 450 to 600 nm of 70% or more, a transmittance of light in a wavelength region of from 695 to 720 nm of not more than 10%, and an amount of change of transmittance of not more than ?0.
    Type: Application
    Filed: December 6, 2013
    Publication date: April 3, 2014
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Makoto Hasegawa, Satoshi Kashiwabara, Hiroshi Shimoda, Kenta Sekikawa, Takashi Shibuya, Mitsuo Osawa, Katsushi Kamijyo, Hiroyuki Arishima, Hiroshi Kumai
  • Publication number: 20140055652
    Abstract: An optical filter including a near infrared absorbing layer on a glass substrate, in which adhesiveness between the glass substrate and the near infrared absorbing layer is firm, high reliability is enabled in uses under a high temperature and high humidity environment, and manufacturing yield is secured, and a high reliability solid-state imaging device having the optical filter are provided. An optical filter includes: a glass substrate; and a near infrared absorbing layer formed on one principal surface of the glass substrate, wherein the near infrared absorbing layer is obtained by reacting a composition for forming the near infrared absorbing layer on the glass substrate and the composition contains a transparent resin having a fluorene skeleton and a reactivity group; a near infrared absorbing dye; and a silane coupling agent and/or oligomer thereof having a hydrolyzable group and a functional group which have reactivity for the reactivity group.
    Type: Application
    Filed: August 21, 2013
    Publication date: February 27, 2014
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Makoto HASEGAWA, Kenta SEKIKAWA, Satoshi KASHIWABARA, Hiroshi SHIMODA, Yuriko KAIDA, Hiroshi KUMAI