Patents by Inventor Hirotaka ASADA

Hirotaka ASADA 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: 11065891
    Abstract: An image reading device includes a tray unit, a recording unit disposed above the tray unit, an outer guide defining a curved path extending from the tray unit to the recording unit, a sheet feeder configured to feed a sheet from the tray unit to the curved path, and a return guide disposed between the recording unit and the tray unit. The return guide pivots about a shaft and guides the sheet having an image recorded thereon back to the curved path. The tray unit includes at least one supporting portion. The return guide includes at least one supported portion. The at least one supporting portion of the tray unit engages the at least one supported portion of the return guide such that the return guide takes a guiding position in which the return guide defines a return path extending to the curved path.
    Type: Grant
    Filed: June 1, 2020
    Date of Patent: July 20, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Tetsuo Asada, Hirotaka Aoki, Satoru Nakakita, Shota Iijima
  • Publication number: 20210208343
    Abstract: An optical-fiber-attached ferrule includes: an optical fiber hole into which an optical fiber is inserted and fixed with a first adhesive; and an adhesive-filling section including an opening surface and an opposed surface opposite the opening surface. The adhesive-filling section is filled with a second adhesive that is softer than the first adhesive with an end surface of the optical fiber positioned closer to the opposed surface than to the opening surface.
    Type: Application
    Filed: March 15, 2017
    Publication date: July 8, 2021
    Applicant: FUJIKURA LTD.
    Inventors: Akihiro Nakama, Shigeo Takahashi, Hirotaka Asada
  • Publication number: 20210132299
    Abstract: A cleaning tool that cleans an optical connector includes an adhesive body that contacts an optical signal region of the optical connector where an optical signal enters and is emitted from the optical connector; and a base that holds the adhesive body. The base includes a first protrusion on a holding surface of a holding part that holds the adhesive body. The first protrusion is disposed at a rear side of a section of the adhesive body and is in contact with the optical signal region.
    Type: Application
    Filed: March 6, 2018
    Publication date: May 6, 2021
    Applicants: FUJIKURA LTD., TOMOEGAWA CO., LTD.
    Inventors: Akihiro Nakama, Shigeo Takahashi, Hirotaka Asada, Makoto Goto, Masayoshi Suzuki
  • Patent number: 10962725
    Abstract: A ferrule structure includes: a holding aperture that holds light guide members forming light guides; a recess that is recessed from a connection end surface with respect to a mating ferrule; a first lens array on a base surface that is a bottom surface of the recess; and a first groove that is recessed from the base surface and is on an outer side of the first lens array. The first lens array includes lenses that are aligned with the light guides.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: March 30, 2021
    Assignee: Fujikura Ltd.
    Inventors: Akihiro Nakama, Hirotaka Asada
  • Publication number: 20200371298
    Abstract: A ferrule structure includes: a ferrule body including a body-side guide hole for insertion of a guide pin, and a holding hole that holds light guide members forming light guides; a lens plate including a plate-side guide hole for insertion of the guide pin, and a lens array that includes lenses aligned to the light guides; and a recessed part in an end part of at least one of the body-side guide hole and the plate-side guide hole on an adhesion surface side.
    Type: Application
    Filed: August 6, 2018
    Publication date: November 26, 2020
    Applicant: FUJIKURA LTD.
    Inventors: Akihiro Nakama, Hirotaka Asada
  • Publication number: 20200341207
    Abstract: A ferrule structure includes: a holding aperture that holds light guide members forming light guides; a recess that is recessed from a connection end surface with respect to a mating ferrule; a first lens array on a base surface that is a bottom surface of the recess; and a first groove that is recessed from the base surface and is on an outer side of the first lens array. The first lens array includes lenses that are aligned with the light guides.
    Type: Application
    Filed: August 6, 2018
    Publication date: October 29, 2020
    Applicant: Fujikura Ltd.
    Inventors: Akihiro Nakama, Hirotaka Asada
  • Patent number: 10802226
    Abstract: A cleaning tool for cleaning a plurality of optical connectors where the cleaning tool includes: an adhesive portion that is integrally formed with the cleaning tool and that contacts a plurality of connecting end faces of the optical connectors collectively. The plurality of optical connectors are inserted into and connected with one housing that is fitted with another housing. The adhesive portion is disposed on the other housing. The adhesive portion contacts the connecting end faces collectively by fitting the one housing with the other housing.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: October 13, 2020
    Assignee: Fujikura Ltd.
    Inventors: Junichi Nakane, Kunihiko Fujiwara, Shigeo Takahashi, Akihiro Nakama, Hirotaka Asada
  • Patent number: 10768380
    Abstract: A ferrule that holds an end part of an optical fiber includes a fiber hole into which the optical fiber is inserted and an upper wall part and a lower wall part that define a hollow adhesive filling part, where the lower wall part faces the upper wall part. The adhesive filling part is filled with an adhesive applied between the optical fiber inserted in the fiber hole and an inner wall surface of the adhesive filling part. The upper wall part has an upper opening through which the adhesive passes into the adhesive filling part, and the lower wall part has a lower opening that ventilates the adhesive filling part to outside of the ferrule.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: September 8, 2020
    Assignee: Fujikura Ltd.
    Inventors: Akihiro Nakama, Shigeo Takahashi, Hirotaka Asada, Kazuaki Toba, Masanari Yamamoto, Ryohei Takahashi
  • Patent number: 10705299
    Abstract: A ferrule structure includes: a ferrule body including a guide hole that accepts insertion of a guide pin, and a fiber hole that accepts insertion of an optical fiber and that is disposed in an opening surface of the ferrule body; and a lens plate including a guide hole that accepts insertion of the guide pin, a lens part, and an abutment surface that abuts an endface of the optical fiber. A recess is disposed in at least one of the ferrule body and the lens plate. A matching material filling gap, that is to be filled with a refractive index matching material, is formed with the recess, between the opening surface of the ferrule body and the abutment surface of the lens plate.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: July 7, 2020
    Assignee: Fujikura Ltd.
    Inventors: Akihiro Nakama, Shigeo Takahashi, Hirotaka Asada
  • Publication number: 20200088954
    Abstract: A ferrule that holds an end part of an optical fiber includes a fiber hole into which the optical fiber is inserted and an upper wall part and a lower wall part that define a hollow adhesive filling part, where the lower wall part faces the upper wall part. The adhesive filling part is filled with an adhesive applied between the optical fiber inserted in the fiber hole and an inner wall surface of the adhesive filling part. The upper wall part has an upper opening through which the adhesive passes into the adhesive filling part, and the lower wall part has a lower opening that ventilates the adhesive filling part to outside of the ferrule.
    Type: Application
    Filed: December 7, 2017
    Publication date: March 19, 2020
    Applicant: FUJIKURA LTD.
    Inventors: Akihiro Nakama, Shigeo Takahashi, Hirotaka Asada, Kazuaki Toba, Masanari Yamamoto, Ryohei Takahashi
  • Publication number: 20200016632
    Abstract: A cleaning tool that cleans an optical connector includes an adhesive body that contacts an optical signal region of the optical connector where an optical signal enters and is emitted from the optical connector. The adhesive body includes a protrusion that protrudes in a region—that contacts the optical signal region.
    Type: Application
    Filed: March 6, 2018
    Publication date: January 16, 2020
    Applicant: FUJIKURA LTD.
    Inventors: Akihiro Nakama, Junichi Nakane, Kunihiko Fujiwara, Shigeo Takahashi, Hirotaka Asada, Makoto Goto, Masayoshi Suzuki
  • Publication number: 20190369337
    Abstract: A cleaning tool for cleaning a plurality of optical connectors where the cleaning tool includes: an adhesive portion that is integrally formed with the cleaning tool and that contacts a plurality of connecting end faces of the optical connectors collectively. The plurality of optical connectors are inserted into and connected with one housing that is fitted with another housing. The adhesive portion is disposed on the other housing. The adhesive portion contacts the connecting end faces collectively by fitting the one housing with the other housing.
    Type: Application
    Filed: October 23, 2017
    Publication date: December 5, 2019
    Applicant: FUJIKURA LTD.
    Inventors: Junichi Nakane, Kunihiko Fujiwara, Shigeo Takahashi, Akihiro Nakama, Hirotaka Asada
  • Publication number: 20190353850
    Abstract: An optical loopback member attaches to a counterpart optical connector to face a plurality of optical fibers of the counterpart optical connector that includes a first input optical fiber, second input optical fiber, first output optical fiber, and second output optical fiber. The optical loopback member includes a first reflector including: a first output light reflection surface that reflects a first output light, outputted in a first direction, from the first output optical fiber; and a first input light reflection surface that reflects light reflected by the first output light reflection surface and directs the reflected light to the first input optical fiber arranged in a second direction with respect to the first output optical fiber. The second direction is perpendicular to the first direction.
    Type: Application
    Filed: February 28, 2018
    Publication date: November 21, 2019
    Applicant: FUJIKURA LTD.
    Inventors: Hirotaka Asada, Akihiro Nakama, Shigeo Takahashi
  • Publication number: 20190265417
    Abstract: A ferrule structure includes: a ferrule body including a guide hole that accepts insertion of a guide pin, and a fiber hole that accepts insertion of an optical fiber and that is disposed in an opening surface of the ferrule body; and a lens plate including a guide hole that accepts insertion of the guide pin, a lens part, and an abutment surface that abuts an endface of the optical fiber. A recess is disposed in at least one of the ferrule body and the lens plate. A matching material filling gap, that is to be filled with a refractive index matching material, is formed with the recess, between the opening surface of the ferrule body and the abutment surface of the lens plate.
    Type: Application
    Filed: November 29, 2017
    Publication date: August 29, 2019
    Applicant: FUJIKURA LTD.
    Inventors: Akihiro NAKAMA, Shigeo TAKAHASHI, Hirotaka ASADA