Patents by Inventor Kazutaka Nara

Kazutaka Nara 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: 20230023384
    Abstract: A hollow needle includes a needle body made of an electrically conductive material, forming a cylindrical shape, and including a shaft part, a tip part connected with the shaft part, and an opening for discharging or drawing in a liquid in which a cavity communicating between the shaft part and the opening is formed. Also included is an annular insulating film made of an electrically insulative material, which exposes the opening and at least part of the tip part, and coats at least part of an outer circumferential surface of the shaft part.
    Type: Application
    Filed: January 15, 2021
    Publication date: January 26, 2023
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Atsushi HIMURA, Takeshi YAGI, Kazutaka NARA, Katsuki SUEMATSU, Tsunenori ARAI
  • Patent number: 11554257
    Abstract: A power transmission unit includes a second coil which contactlessly transmits power, a power reception unit includes a first coil that receives the power transmitted from the power transmission unit, and a medical instrument includes the power reception unit and is embedded in a body. The medical instrument includes a notification unit that is composed of a plurality of light emitting units that provides notification that a relative positional relationship between the power transmission unit and the power reception unit has reached a predetermined state by emitting light using the power received at the power reception unit when the predetermined state is reached by the movement of the power transmission unit. A soft unit into which an injection needle is inserted, the plurality of light emitting units being arranged so as to extend along an outer edge of the soft unit.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: January 17, 2023
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Katsuki Suematsu, Takeshi Yagi, Atsushi Himura, Kazutaka Nara
  • Publication number: 20220305247
    Abstract: A power transmission unit includes a second coil which contactlessly transmits power, a power reception unit includes a first coil that receives the power transmitted from the power transmission unit, and a medical instrument includes the power reception unit and is embedded in a body. The medical instrument includes a notification unit that is composed of a plurality of light emitting units that provides notification that a relative positional relationship between the power transmission unit and the power reception unit has reached a predetermined state by emitting light using the power received at the power reception unit when the predetermined state is reached by the movement of the power transmission unit. A soft unit into which an injection needle is inserted, the plurality of light emitting units being arranged so as to extend along an outer edge of the soft unit.
    Type: Application
    Filed: August 24, 2020
    Publication date: September 29, 2022
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Katsuki SUEMATSU, Takeshi YAGI, Atsushi HIMURA, Kazutaka NARA
  • Publication number: 20220249865
    Abstract: A pulse application method includes: setting a wavelength of light within a range in which a temperature rise width of collagen fibers in living tissue when the light is applied to the living tissue is larger than a temperature rise width of water containing cells that are contained in the living tissue and that are present around the collagen fibers; and applying a pulse of light with the set wavelength to the living tissue to heat the living tissue.
    Type: Application
    Filed: April 28, 2022
    Publication date: August 11, 2022
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Emiyu OGAWA, Tsunenori ARAI, Shunichi MATSUSHITA, Kazutaka NARA, Kyosuke YAMAUCHI
  • Publication number: 20220084309
    Abstract: A support information generating device includes a processor configured to: obtain first related information including a plurality of first captured images sequentially captured in chronological order, the plurality of first captured images being associated respectively with first captured position information indicating captured positions at which the first captured images are captured; analyze the plurality of first captured images; recognize a specific facility captured in at least one first captured image of the plurality of first captured images; determine a classification of the specific facility captured in the first captured image; generate first facility classification information indicating the classification; and generate support information including the first facility classification information and first facility position information associated with each other, the first facility position information indicating a position of the specific facility based on the first captured position information a
    Type: Application
    Filed: December 1, 2021
    Publication date: March 17, 2022
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Kazutaka NARA, Katsuki SUEMATSU, Junya HIRANO, Yusuke HIRAKAWA, Takuya KIDO, Takashi WATANABE, Jun HORI
  • Publication number: 20220040404
    Abstract: A medical device includes: a power transmitter to transmit power without contact; a power receiver to receive the power that is transmitted from the power transmitter; a medical tool that includes any one of the power transmitter and the power receiver and that is to be embedded in a body and is used; and a notification unit to, when a relative positional relationship between the power transmitter and the power receiver reaches a given state in association with move of any one of the power transmitter and the power receiver, notify that the relative positional relationship enters the given state.
    Type: Application
    Filed: October 22, 2021
    Publication date: February 10, 2022
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Katsuki SUEMATSU, Takeshi YAGI, Atsushi HIMURA, Kazutaka NARA
  • Patent number: 11125942
    Abstract: An optical waveguide element includes: a cladding portion made of silica-based glass; and a plurality of optical waveguides positioned in the cladding portion and made of silica-based glass in which ZrO2 crystal particles are dispersed. The optical waveguide element is a planar lightwave circuit. The plurality of optical waveguides configure an arrayed waveguide grating element.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: September 21, 2021
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Yasuyoshi Uchida, Yuuki Taniguchi, Hiroshi Kawashima, Kazutaka Nara, Masanori Takahashi
  • Publication number: 20190317279
    Abstract: An optical waveguide element includes: a cladding portion made of silica-based glass; and a plurality of optical waveguides positioned in the cladding portion and made of silica-based glass in which ZrO2 crystal particles are dispersed. The optical waveguide element is a planar lightwave circuit. The plurality of optical waveguides configure an arrayed waveguide grating element.
    Type: Application
    Filed: June 26, 2019
    Publication date: October 17, 2019
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Yasuyoshi UCHIDA, Yuuki TANIGUCHI, Hiroshi KAWASHIMA, Kazutaka NARA, Masanori TAKAHASHI
  • Patent number: 10386576
    Abstract: An optical waveguide circuit includes a polarization beam splitter connecting to a first input optical waveguide; an optical interference element receiving one of orthogonally polarization-split lights of a first light from the polarization beam splitter, and one of orthogonally-polarized lights from a second light input to a second input optical waveguide, the optical interference element causing interference therebetween; a first connection optical waveguide connecting the polarization beam splitter and the optical interference element; and a second connection optical waveguide connecting the second input optical waveguide and the optical interference element. The first and the second input optical waveguides have a straight-line shape or an S-shape including a first bending portion and a second bending portion to cancel the polarization-rotation of light taking place in the first bending portion.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: August 20, 2019
    Assignee: FURUKAWA ELECTRIC CO., LTD
    Inventors: Kazutaka Nara, Takashi Inoue, Noritaka Matsubara, Hiroshi Kawashima
  • Patent number: 10371890
    Abstract: An optical waveguide element includes: a cladding portion made of silica-based glass; and a plurality of optical waveguides positioned in the cladding portion and made of silica-based glass in which ZrO2 crystal particles are dispersed. The optical waveguide element is a planar lightwave circuit. The plurality of optical waveguides configure an arrayed waveguide grating element.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: August 6, 2019
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Yasuyoshi Uchida, Yuuki Taniguchi, Hiroshi Kawashima, Kazutaka Nara, Masanori Takahashi
  • Patent number: 9638865
    Abstract: The present invention provides a switch device for an optical signal which has high extendibility and which can suppress an increase of loss in extension. A switch device in one embodiment of the present invention includes, in a housing, four splitter portions, four switch portions, and extension splitter portions. The splitter portions are connected to path-side ports, the switch portions are connected to client-side ports, and the splitter portions and the switch portions are connected to one another via shuffle fiber arrays. One ends of the extension splitter portions are connected to path-side extension ports, and the other ends thereof are connected to client-side extension ports. The number of wavelengths processable by the switch device can be easily changed by changing a connection state of optical fibers to the path-side ports, the client-side ports, the path-side extension ports, and the client-side extension ports.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: May 2, 2017
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Junichi Hasegawa, Kazutaka Nara
  • Patent number: 9488783
    Abstract: An object of the present invention is to provide a switch unit for optical signals which is capable of reducing an area required for arrangement and reducing manufacturing costs, and a switch apparatus including the switch unit. A switch unit 30 according to one embodiment of the present invention includes two optical switch arrays 34a, 34b arranged to face in opposite directions and in parallel on a substrate. The two optical switch arrays extend along a surface of a chip, and each have four optical switches 31 arranged in parallel. Such a configuration makes it possible to reduce the size of the switch unit because in an excess region of one of the optical switch array, the other optical switch array is disposed.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: November 8, 2016
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Junichi Hasegawa, Noritaka Matsubara, Kazutaka Nara
  • Publication number: 20160246001
    Abstract: An optical waveguide element includes: a cladding portion made of silica-based glass; and a plurality of optical waveguides positioned in the cladding portion and made of silica-based glass in which ZrO2 crystal particles are dispersed. The optical waveguide element is a planar lightwave circuit. The plurality of optical waveguides configure an arrayed waveguide grating element.
    Type: Application
    Filed: May 3, 2016
    Publication date: August 25, 2016
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Yasuyoshi UCHIDA, Yuuki TANIGUCHI, Hiroshi KAWASHIMA, Kazutaka NARA, Masanori TAKAHASHI
  • Patent number: 9417388
    Abstract: A spot-size-converting optical waveguide includes a core portion. A first core portion of the core portion has a first straight portion and a first tapered portion. The first straight portion extends in a direction, having width and height that are approximately constant in the direction, and the first tapered portion is continuous with the first straight portion and decreases in width and height toward a termination portion. A second core portion of the core portion has a straight-portion-coating portion, a tapered-portion-coating portion, and a second tapered portion, the straight-portion-coating portion covers the first straight portion, the tapered-portion-coating portion covers the first tapered portion continuously with the straight-portion-coating portion and decreases in width and height along the first tapered portion's shape, and the second tapered portion increases in width and height toward the direction. A refractive index of the second core portion is lower than that of the first core portion.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: August 16, 2016
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Shintaro Yamasaki, Kazutaka Nara, Masanori Takahashi, Yasuyoshi Uchida
  • Publication number: 20160216451
    Abstract: The present invention provides a switch device for an optical signal which has high extendibility and which can suppress an increase of loss in extension. A switch device in one embodiment of the present invention includes, in a housing, four splitter portions, four switch portions, and extension splitter portions. The splitter portions are connected to path-side ports, the switch portions are connected to client-side ports, and the splitter portions and the switch portions are connected to one another via shuffle fiber arrays. One ends of the extension splitter portions are connected to path-side extension ports, and the other ends thereof are connected to client-side extension ports. The number of wavelengths processable by the switch device can be easily changed by changing a connection state of optical fibers to the path-side ports, the client-side ports, the path-side extension ports, and the client-side extension ports.
    Type: Application
    Filed: April 6, 2016
    Publication date: July 28, 2016
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Junichi HASEGAWA, Kazutaka NARA
  • Patent number: 9354395
    Abstract: An optical waveguide element includes a cladding portion made of a silica-based glass, and an optical waveguide positioned in the cladding portion and made of a silica-based glass in which a ZrO2 particle is dispersed.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: May 31, 2016
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Yasuyoshi Uchida, Yuuki Taniguchi, Hiroshi Kawashima, Kazutaka Nara, Masanori Takahashi
  • Publication number: 20160085026
    Abstract: A spot-size-converting optical waveguide includes a core portion. A first core portion of the core portion has a first straight portion and a first tapered portion. The first straight portion extends in a direction, having width and height that are approximately constant in the direction, and the first tapered portion is continuous with the first straight portion and decreases in width and height toward a termination portion. A second core portion of the core portion has a straight-portion-coating portion, a tapered-portion-coating portion, and a second tapered portion, the straight-portion-coating portion covers the first straight portion, the tapered-portion-coating portion covers the first tapered portion continuously with the straight-portion-coating portion and decreases in width and height along the first tapered portion's shape, and the second tapered portion increases in width and height toward the direction. A refractive index of the second core portion is lower than that of the first core portion.
    Type: Application
    Filed: December 7, 2015
    Publication date: March 24, 2016
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Shintaro Yamasaki, Kazutaka Nara, Masanori Takahashi, Yasuyoshi Uchida
  • Publication number: 20160025930
    Abstract: An object of the present invention is to provide a switch unit for optical signals which is capable of reducing an area required for arrangement and reducing manufacturing costs, and a switch apparatus including the switch unit. A switch unit 30 according to one embodiment of the present invention includes two optical switch arrays 34a, 34b arranged to face in opposite directions and in parallel on a substrate. The two optical switch arrays extend along a surface of a chip, and each have four optical switches 31 arranged in parallel. Such a configuration makes it possible to reduce the size of the switch unit because in an excess region of one of the optical switch array, the other optical switch array is disposed.
    Type: Application
    Filed: October 7, 2015
    Publication date: January 28, 2016
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Junichi HASEGAWA, Noritaka MATSUBARA, Kazutaka NARA
  • Publication number: 20150172794
    Abstract: An object of the invention is to provide a switch device, which achieves high expandability, high layout freedom, and low losses. A switch device of an embodiment includes a splitter unit, a first switch unit, a second switch unit, a fiber array which connects the splitter unit to the two switch units, and a control board. The fiber array includes multiple optical fibers bundled in an arrayed fashion. At an end of the fiber array on the splitter unit side, all the optical fibers are bundled into one and connected to the splitter unit. At an end of the fiber array on the switch unit side, the multiple optical fibers are divided into two groups and formed into two sub-fiber arrays, which are connected to the first switch unit and the second switch unit, respectively.
    Type: Application
    Filed: February 4, 2015
    Publication date: June 18, 2015
    Applicant: Furukawa Electric Co., Ltd.
    Inventors: Junichi HASEGAWA, Noritaka MATSUBARA, Kazutaka NARA
  • Patent number: 9054486
    Abstract: An optical amplifier device comprising an input/output section that inputs incident light and outputs emission light; a polarized light splitting section that causes a polarized light component of the incident light input from the input/output section to branch, and outputs first polarization mode light having a first polarization and second polarization mode light having a second polarization different from the first polarization; a polarization converting section that receives the first polarization mode light, converts the first polarization to the second polarization, and outputs first polarization converted light; and an optical amplifying section that amplifies the first polarization converted light input to one end of a waveguide, outputs the resulting amplified first polarization converted light from another end of the waveguide, amplifies the second polarization mode light input to the other end of the waveguide, and outputs the resulting amplified second polarization mode light from the one end of t
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: June 9, 2015
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Hideaki Hasegawa, Masaki Funabashi, Kazuaki Kiyota, Takeshi Akutsu, Noriyuki Yokouchi, Kazutaka Nara