Patents by Inventor Ken Osato

Ken Osato 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: 12292613
    Abstract: An optical cable includes optical fiber units each of which includes intermittently-coupled optical fiber ribbons. In at least one of the optical fiber units, in a cross section perpendicular to a longitudinal direction of the at least one of the optical fiber units, a length of a vector GU is shorter than a largest length of vectors MG of the intermittently-coupled optical fiber ribbons forming the at least one of the optical fiber units, where, in each of the intermittently-coupled optical fiber ribbons, each of the vectors MG is a vector starting from M and ending at G, M is a midpoint between optical fibers at both ends of the each of the intermittently-coupled optical fiber ribbons, and G is a center of gravity of the each of the intermittently-coupled optical fiber ribbons, and the vector GU is a resultant vector of the vectors MG.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: May 6, 2025
    Assignee: Fujikura Ltd.
    Inventors: Hironori Sato, Akira Namazue, Ken Osato
  • Patent number: 12269708
    Abstract: A housing unit includes: a linear material; and a housing body that houses the linear material. In the housing body, winding regions in which the linear material is wound are disposed in a circumferential direction. The linear material is wound in a figure eight in a first region pair constituted by a pair of the winding regions. The linear material is wound in a figure eight in a second region pair constituted by a pair of the winding regions that are different from the winding regions constituting the first region pair.
    Type: Grant
    Filed: September 7, 2021
    Date of Patent: April 8, 2025
    Assignee: Fujikura Ltd.
    Inventors: Takafumi Sato, Masayuki Ishioka, Ryo Inagaki, Ken Osato
  • Publication number: 20250067947
    Abstract: An optical fiber assembly includes: bundled optical fiber units, each of which is configured by stacking optical fiber ribbons. A stacked state of the optical fiber ribbons in an optical fiber unit of the bundled optical fiber units is collapsed such that a ribbon surface of at least one of the optical fiber ribbons configuring the optical fiber unit is bent, in a cross section of the optical fiber assembly orthogonal to a longitudinal direction of the optical fiber assembly at least at a first position in the longitudinal direction. The bundled optical fiber units include inner layer fiber units located on an inner side in a radial direction of the optical fiber assembly, and outer layer fiber units located on an outer side in the radial direction of the optical fiber assembly relative to the inner layer fiber units, in a cross section of the optical fiber assembly.
    Type: Application
    Filed: December 15, 2022
    Publication date: February 27, 2025
    Applicant: Fujikura Ltd.
    Inventors: Hironori Sato, Itaru Ishida, Ken Osato
  • Publication number: 20250067948
    Abstract: An optical fiber assembly includes: bundled optical fiber units, each of which is configured by stacking optical fiber ribbons. A stacked state of the optical fiber ribbons in an optical fiber unit of the bundled optical fiber units is collapsed such that a ribbon surface of at least one of the optical fiber ribbons configuring the optical fiber unit is bent, in a cross section of the optical fiber assembly orthogonal to a longitudinal direction of the optical fiber assembly at least at a first position in the longitudinal direction. The bundled optical fiber units include one or more first fiber units located on a neutral line of bending of the optical fiber assembly and a second fiber unit located farthest from the neutral line, in a cross section of the optical fiber assembly orthogonal to the longitudinal direction.
    Type: Application
    Filed: December 15, 2022
    Publication date: February 27, 2025
    Applicant: Fujikura Ltd.
    Inventors: Hironori Sato, Itaru Ishida, Ken Osato
  • Publication number: 20250052967
    Abstract: An optical fiber cable including an optical fiber ribbon in a pipe, wherein the ribbon includes at least two optical fibers arranged side by side, and wherein at least two of the optical fibers are bonded intermittently along a length of the fibers.
    Type: Application
    Filed: October 31, 2024
    Publication date: February 13, 2025
    Inventors: Joseph Cignarale, Doug Baker, Yoshio Hashimoto, Ken Osato
  • Patent number: 12222574
    Abstract: An optical fiber unit according to the present disclosure includes a plurality of intermittently-connected optical fiber ribbons. At least one of the optical fiber ribbons includes a plurality of optical fibers including a first optical fiber, and a second optical fiber that is longer than the first optical fiber. Conditions (AA) and c<0.05 are satisfied, where b is an interval, in a length direction, between connection parts that connect the first optical fiber and the second optical fiber, c (%) is a fiber length difference of the second optical fiber with respect to the first optical fiber, and Y is an interval between the optical fibers in a ribbon width direction.
    Type: Grant
    Filed: June 22, 2021
    Date of Patent: February 11, 2025
    Assignee: Fujikura Ltd.
    Inventors: Noriaki Yamashita, Akira Namazue, Ken Osato
  • Patent number: 12222575
    Abstract: An optical fiber ribbon includes: optical fibers disposed side by side in a predetermined direction; and connecting portions that connect two adjacent ones of the optical fibers. A peripheral resin portion is formed on a periphery of the optical fibers. An arithmetic mean roughness Ra of a surface of the peripheral resin portion is 0.41 ?m or lower. A ten-point mean roughness Rz of a surface of the peripheral resin portion is 1.4 ?m or lower.
    Type: Grant
    Filed: December 27, 2023
    Date of Patent: February 11, 2025
    Assignee: Fujikura Ltd.
    Inventors: Yoshie Murakoshi, Akira Namazue, Ken Osato
  • Publication number: 20250026607
    Abstract: A cable accommodating body includes one or more cable bundles made of a wound cable and not having any winding core and one or more first containers accommodating the one or more cable bundles and having a first outlet and a second outlet through each of which the wound cable is pulled out from an inside of the one or more first containers.
    Type: Application
    Filed: February 3, 2023
    Publication date: January 23, 2025
    Applicant: Fujikura Ltd.
    Inventors: Naoya Maehara, Go Taki, Minoru Takahashi, Akira Namazue, Shengyang Luo, Ken Osato
  • Publication number: 20250004236
    Abstract: An optical cable includes one or more tension members, optical fibers disposed around an outer periphery of the one or more tension members, and an outer sheath housing the one or more tension members and the optical fibers. A boundary elongation of the one or more tension members is smaller than a boundary elongation of the optical fibers. The boundary elongation of the one or more tension members and the boundary elongation of the optical fibers is a cable elongation corresponding to a boundary between an initial elongation region and an elastic region.
    Type: Application
    Filed: November 8, 2022
    Publication date: January 2, 2025
    Applicant: Fujikura Ltd.
    Inventors: Masatoshi Ohno, Akira Namazue, Ken Osato
  • Publication number: 20240418952
    Abstract: An optical fiber ribbon includes optical fibers disposed in a disposition direction perpendicular to a longitudinal direction of the optical fiber ribbon and connection parts each disposed between and connecting two or more of the optical fibers adjacent in the disposition direction. The connection parts are disposed intermittently in the longitudinal direction and the disposition direction. The optical fiber ribbon has a first high-density region and a low-density region adjacent in the longitudinal direction. Two or more of the connection parts, having different positions from each other in the longitudinal direction and the disposition direction, are disposed in the first high-density region. A number density of the connection parts in the low-density region is lower than a number density of the connection parts in the first high-density region.
    Type: Application
    Filed: September 30, 2022
    Publication date: December 19, 2024
    Applicant: Fujikura Ltd.
    Inventors: Noriaki Yamashita, Itaru Ishida, Ken Osato
  • Patent number: 12164165
    Abstract: An optical fiber cable including an optical fiber ribbon in a pipe, wherein the ribbon includes at least two optical fibers arranged side by side, and wherein at least two of the optical fibers are bonded intermittently along a length of the fibers.
    Type: Grant
    Filed: July 22, 2022
    Date of Patent: December 10, 2024
    Assignees: AFL Telecommunications LLC, FUJIKURA LTD
    Inventors: Joseph Cignarale, Doug Baker, Yoshio Hashimoto, Ken Osato
  • Publication number: 20240329348
    Abstract: An optical cable includes optical fiber units each including a bundle of optical fibers. The optical fiber units are twisted together in an S-Z configuration in which a twisting direction of the optical fiber units is reversed at a reversal part and an adjacent reversal part adjacent to the reversal part. A twisting angle, by which the optical fiber units are twisted in a circumferential direction between the reversal part and the adjacent reversal part, is 540 degrees or greater.
    Type: Application
    Filed: April 19, 2022
    Publication date: October 3, 2024
    Applicant: Fujikura Ltd.
    Inventors: Shogo Shimizu, Soichiro Kaneko, Akira Namazue, Ken Osato
  • Patent number: 12105335
    Abstract: An optical fiber cable includes: a sheath; a core that is housed in the sheath and comprises optical fibers; tensile strength members embedded in the sheath; and ripcords embedded in the sheath. Recesses and protrusions are disposed alternately in a circumferential direction on an outer circumferential surface of the sheath. The recesses each include: two connecting portions respectively connected to radial inner ends of two adjacent protrusions; and a bottom surface positioned between the two connecting portions. In a transverse cross-sectional view, the ripcords are positioned inside some of the protrusions, and the tensile strength members are positioned inside the remaining protrusions.
    Type: Grant
    Filed: February 9, 2024
    Date of Patent: October 1, 2024
    Assignee: AFL Telecommunications LLC
    Inventors: Shogo Shimizu, Akira Namazue, Ken Osato
  • Publication number: 20240319463
    Abstract: An optical fiber ribbon includes five or more optical fibers disposed in a disposition direction perpendicular to a longitudinal direction of the optical fiber ribbon and connection parts disposed intermittently in the longitudinal and disposition directions. Each of the connection parts is disposed between and connects adjacent ones of the optical fibers. The optical fiber ribbon has a first high-density region and a first low-density region disposed at different positions in the longitudinal direction and a second high-density region and a second low-density region disposed at different positions in the longitudinal direction. At least two of the connection parts having different positions from each other in the longitudinal and disposition directions are disposed in the first high-density region. At least another two of the connection parts having different positions from each other in the longitudinal and disposition directions are disposed in the second high-density region.
    Type: Application
    Filed: April 25, 2022
    Publication date: September 26, 2024
    Applicant: Fujikura Ltd.
    Inventors: Noriaki Yamashita, Itaru Ishida, Ken Osato
  • Publication number: 20240288646
    Abstract: An optical fiber cable includes a core including optical fibers and a wrapping member that wraps the optical fibers, a sheath housing the core, and a rip cord disposed between the core and the sheath. A recessed portion is recessed inward in a radial direction of the core in the wrapping member. At least a portion of the rip cord is disposed inside the recessed portion.
    Type: Application
    Filed: March 8, 2022
    Publication date: August 29, 2024
    Applicant: Fujikura Ltd.
    Inventors: Daisuke Hikima, Shinnosuke Sato, Daiki Takeda, Ken Osato
  • Patent number: 12062899
    Abstract: A bundling suspension wire includes: a suspension wire that includes a supporting wire and a coat coating the supporting wire; a hanger member that is suspended from the suspension wire and into which a cable is configured to be inserted; and wire threading cords that are inserted into the hanger member.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: August 13, 2024
    Assignee: Fujikura Ltd.
    Inventors: Go Taki, Ryo Inagaki, Ken Osato, Masayuki Ishioka
  • Publication number: 20240248270
    Abstract: An optical fiber cable includes optical fibers, a wrapping tube that wraps around the optical fibers and contacts outermost ones of the optical fibers, and a sheath that covers the wrapping tube and has recesses on an inner circumferential surface of the sheath. The recesses are recessed toward a radially outer side of the optical fiber cable such that a space exists between the wrapping tube and the sheath in each of the recesses.
    Type: Application
    Filed: April 20, 2022
    Publication date: July 25, 2024
    Applicant: Fujikura Ltd.
    Inventors: Okimi Mukai, Ken Osato, Akira Namazue
  • Publication number: 20240241336
    Abstract: A manufacturing method for manufacturing an optical fiber ribbon, the manufacturing method includes intermittently forming, with a connecting device, connection parts between optical fibers measuring a load of the connecting device during the intermittent forming of the connection parts, and detecting an abnormality based on the load.
    Type: Application
    Filed: February 28, 2022
    Publication date: July 18, 2024
    Applicant: FUJIKURA LTD.
    Inventors: Hironori Sato, Hiroyuki Takahashi, Itaru Ishida, Ken Osato
  • Publication number: 20240231029
    Abstract: An optical fiber ribbon includes: optical fibers disposed side by side in a predetermined direction; and connecting portions that connect two adjacent ones of the optical fibers. A peripheral resin portion is formed on a periphery of the optical fibers. An arithmetic mean roughness Ra of a surface of the peripheral resin portion is 0.41 ?m or lower. A ten-point mean roughness Rz of a surface of the peripheral resin portion is 1.4 ?m or lower.
    Type: Application
    Filed: December 27, 2023
    Publication date: July 11, 2024
    Applicant: Fujikura Ltd.
    Inventors: Yoshie Murakoshi, Akira Namazue, Ken Osato
  • Publication number: 20240219665
    Abstract: A fixing structure includes: an optical fiber group constituted by a plurality of optical fibers; a tubular member through which the optical fiber group is passed; a reticulated tube, one end part of the reticulated tube being disposed on an outer periphery of the tubular member, the optical fiber group being inserted through an extended section of the reticulated tube extending out from the tubular member; and a fixing member that fixes the tubular member which has the reticulated tube disposed on the outer periphery thereof.
    Type: Application
    Filed: January 29, 2024
    Publication date: July 4, 2024
    Applicant: FUJIKURA LTD.
    Inventors: Go Taki, Masayuki Ishioka, Mizuki Isaji, Tomoaki Kaji, Soichiro Kaneko, Koji Tomikawa, Akira Namazue, Ken Osato