Patents by Inventor Koki Hirano
Koki Hirano 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).
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Patent number: 11996217Abstract: A shielded cable includes at least one electric wire or cable, a shield being provided around the at least one electric wire or cable and including a plurality of wires comprising a metal material, an insulating coating being provided around the shield in direct- and plane-contact with the plurality of wires. The insulating coating includes a base resin composed of acid-modified fluoropolymer, and a heat-dissipating filler included in the base resin. The heat-dissipating filler is electrically insulating and has at least one functional group of NH2 group and OH group on its surface.Type: GrantFiled: February 1, 2022Date of Patent: May 28, 2024Assignee: PROTERIAL, LTD.Inventors: Atsuro Yaguchi, Takanobu Watanabe, Takanori Komuro, Kimika Kudo, Koki Hirano, Detian Huang
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Patent number: 11946924Abstract: A crosslinked fluoropolymer resin is configured to include a measuring step of irradiating a surface of the crosslinked fluoropolymer resin with a laser to measure a Raman spectrum, and an acceptance or rejection decision step of determining an acceptance or a rejection of a quality of a measurement region irradiated with the laser, on the basis of an intensity of a fluorescence spectrum relative to an intensity of a Raman scattering peak, which is ascribed to a CF2 stretching vibration, in the measured Raman spectrum.Type: GrantFiled: January 19, 2021Date of Patent: April 2, 2024Assignee: PROTERIAL, LTD.Inventors: Kazufumi Suenaga, Koki Hirano, Kenta Kimura
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Publication number: 20240087771Abstract: A cable connection structure is provided with a cable having a plurality of electric wires including core wires made of metal conductors coated with insulators, respectively, and a sheath covering the plurality of electric wires, and an electronic component including a plurality of electrodes. In the cable, the core wires and the insulators of the plurality of electric wires and the sheath are collectively cut perpendicularly to a longitudinal direction at an end of the cable, and tip portions of the core wires including cutting edges of the core wires of the plurality of electric wires are soldered to the plurality of electrodes, respectively.Type: ApplicationFiled: August 10, 2023Publication date: March 14, 2024Inventors: Yuki YAMAMOTO, Koki HIRANO
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Patent number: 11905486Abstract: An object is to provide a viscosity index improver composition that is capable of properly regulating the HTHS viscosity in the effective temperature range of a lubricating oil composition to a lower range, and a lubricating oil composition containing the viscosity index improver composition, and the viscosity index improver composition contains a comb-shaped polymer (A) containing a structural unit derived from a macromonomer (?) and a structural unit derived from a particular monomer (A1), the macromonomer (?) having a (meth)acryloyl group at one end, and having a structural unit derived from a monomer (?1) selected from butadiene and hydrogenated butadiene.Type: GrantFiled: September 24, 2020Date of Patent: February 20, 2024Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Yoriyuki Takashima, Taeko Nakano, Koki Hirano, Motoharu Ishikawa
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Patent number: 11610699Abstract: A multi-core cable includes a plurality of coaxial cables being arranged in parallel with each other, and a synthetic resin covering member that collectively covers the plurality of coaxial cables. Each coaxial cable includes a center conductor, an insulator covering an outer periphery of the center conductor, and a metal outer conductor covering an outer periphery of the insulator. The covering member holds the plurality of coaxial cables in such a manner that the plurality of coaxial cables are aligned side by side along a direction perpendicular to a longitudinal direction of the plurality of coaxial cables. At least a part of the outer conductors of the plurality of the coaxial cables respectively contacts the covering member.Type: GrantFiled: September 27, 2021Date of Patent: March 21, 2023Assignee: HITACHI METALS, LTD.Inventors: Koki Hirano, Kazunori Sasaya, Takenori Taki, Hidetoshi Kiyohara, Masaki Kimura
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Publication number: 20230077911Abstract: A resin composition quality controlling method includes a step of measuring a Raman spectrum of a resin composition composed of first TiO2 particles of anatase type TiO2 and second TiO2 particles of rutile type TiO2 by irradiation with laser, and determining a concentration ratio of the first TiO2 particles to the second TiO2 particles in the resin composition based on an intensity of a first peak assigned to lattice vibration in the anatase type TiO2 and an intensity of a second peak assigned to lattice vibration in the rutile type TiO2 in the Raman spectrum.Type: ApplicationFiled: August 26, 2022Publication date: March 16, 2023Inventors: Kazufumi SUENAGA, Seiichi KASHIMURA, Koki HIRANO
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Publication number: 20220372394Abstract: An object is to provide a viscosity index improver composition that is capable of properly regulating the HTHS viscosity in the effective temperature range of a lubricating oil composition to a lower range, and a lubricating oil composition containing the viscosity index improver composition, and the viscosity index improver composition contains a comb-shaped polymer (A) containing a structural unit derived from a macromonomer (?) and a structural unit derived from a particular monomer (A1), the macromonomer (?) having a (meth)acryloyl group at one end, and having a structural unit derived from a monomer (?1) selected from butadiene and hydrogenated butadiene.Type: ApplicationFiled: September 24, 2020Publication date: November 24, 2022Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Yoriyuki TAKASHIMA, Taeko NAKANO, Koki HIRANO, Motoharu ISHIKAWA
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Publication number: 20220246326Abstract: A shielded cable includes at least one electric wire or cable, a shield being provided around the at least one electric wire or cable and including a plurality of wires comprising a metal material, an insulating coating being provided around the shield in direct- and plane-contact with the plurality of wires. The insulating coating includes a base resin composed of acid-modified fluoropolymer, and a heat-dissipating filler included in the base resin. The heat-dissipating filler is electrically insulating and has at least one functional group of NH2 group and OH group on its surface.Type: ApplicationFiled: February 1, 2022Publication date: August 4, 2022Inventors: Atsuro YAGUCHI, Takanobu WATANABE, Takanori KOMURO, Kimika KUDO, Koki HIRANO, Detian HUANG
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Publication number: 20220102021Abstract: A multi-core cable includes a plurality of coaxial cables being arranged in parallel with each other, and a synthetic resin covering member that collectively covers the plurality of coaxial cables. Each coaxial cable includes a center conductor, an insulator covering an outer periphery of the center conductor, and a metal outer conductor covering an outer periphery of the insulator. The covering member holds the plurality of coaxial cables in such a manner that the plurality of coaxial cables are aligned side by side along a direction perpendicular to a longitudinal direction of the plurality of coaxial cables. At least a part of the outer conductors of the plurality of the coaxial cables respectively contacts the covering member.Type: ApplicationFiled: September 27, 2021Publication date: March 31, 2022Inventors: Koki HIRANO, Kazunori Sasaya, Takenori Taki, Hidetoshi Kiyohara, Masaki Kimura
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Publication number: 20210231636Abstract: A crosslinked fluoropolymer resin is configured to include a measuring step of irradiating a surface of the crosslinked fluoropolymer resin with a laser to measure a Raman spectrum, and an acceptance or rejection decision step of determining an acceptance or a rejection of a quality of a measurement region irradiated with the laser, on the basis of an intensity of a fluorescence spectrum relative to an intensity of a Raman scattering peak, which is ascribed to a CF2 stretching vibration, in the measured Raman spectrum.Type: ApplicationFiled: January 19, 2021Publication date: July 29, 2021Inventors: Kazufumi Suenaga, Koki Hirano, Kenta Kimura
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Patent number: 10643762Abstract: An insulated wire includes a conductor, a flame-retardant inner layer that is provided around the conductor and includes a metal hydroxide, and a water ingress prevention layer provided around the flame-retardant inner layer. The insulated wire may further include a flame-retardant outer layer provided around the water ingress prevention layer.Type: GrantFiled: June 13, 2017Date of Patent: May 5, 2020Assignee: HITACHI METALS, LTD.Inventors: Koki Hirano, Masafumi Kaga, Tamotsu Kibe, Seiichi Kashimura, Makoto Iwasaki
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Patent number: 10270676Abstract: A signal detecting device provided in a connector at an end of a communication cable or in a communication device to which the connector is connected. The signal detecting device includes a detection circuit that branches and extracts a portion of a signal transmitted through the communication cable and indicates existence of a data communication based on the extracted signal, and a self-diagnostic circuit that inputs a diagnostic signal into the detection circuit upon diagnosis of the detection circuit.Type: GrantFiled: August 26, 2016Date of Patent: April 23, 2019Assignee: HITACHI METALS, LTD.Inventors: Yohei Shirakawa, Koki Hirano, Yoshitake Ageishi, Yuki Haga
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Patent number: 10254197Abstract: An optical fiber monitoring system monitors an inter-building optical fiber connecting a first building and a second building. The optical fiber monitoring system includes a first visualization panel provided in the first building and optically connected to an one end of the inter-building optical fiber, a second visualization panel provided in the second building and optically connected to an other end of the inter-building optical fiber, and a monitoring light source provided in the first building to input a monitoring light into the inter-building optical fiber. The first visualization panel includes a first photosensor that partially leaks the monitoring light inputted into the inter-building optical fiber from the monitoring light source and detects an amount of a leaked light. The second visualization panel includes a second photosensor that partially leaks a light from the inter-building optical fiber and detects amount of a leaked light.Type: GrantFiled: November 2, 2017Date of Patent: April 9, 2019Assignees: HITACHI METALS, LTD., NTT COMMUNICATIONS CORPORATIONInventors: Kanako Suzuki, Koki Hirano, Mikio Ohkoshi, Wataru Ohnuki, Yoshihiro Nakatani, Takao Nishikawa, Toshiyuki Suzuki, Toshio Sakai
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Patent number: 10149378Abstract: A communication device is provided wherein a number of the pairs of transmission lines is N, each pair of the transmission lines comprises (N?1) stages of sub-transmission lines generating a same amount of crosstalk as that caused at a connector, and (N?1) stages of connecting portions comprise a transmission path of the connector and a first stage sub-transmission line, and (N?1) stages of the connecting portions to connect an i th stage sub-transmission line and an (i+1) th stage sub-transmission line by the straight/cross connection, and wherein each pair of the transmission lines is different in all pairs in a number of the connecting portion having the cross connection; and as a j th stage connecting portion in any one pair of the transmission lines has cross connection, a (N?j) th stage connecting portion in the any one pair of the transmission lines also has cross connection.Type: GrantFiled: July 6, 2016Date of Patent: December 4, 2018Assignee: HITACHI METALS, LTD.Inventors: Yohei Shirakawa, Koki Hirano, Yoshitake Ageishi, Yuki Haga
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Patent number: 10075211Abstract: A crosstalk reduction method includes providing a signal transmission unit including first to eighth main transmission paths, the first and second paths, the third and sixth paths, the fourth and fifth paths and the seventh and eighth paths being respectively paired to transmit differential signals, providing a first coupling transmission path in the signal transmission unit, the first coupling transmission path being adapted to electrically couple the third main transmission path to the fifth and seventh main transmission paths that are located adjacent to the sixth main path, and providing a second coupling transmission path in the signal transmission unit, the second coupling transmission path being adapted to electrically couple the sixth main transmission path to the second and fourth main transmission path that are located adjacent to the third main transmission path.Type: GrantFiled: October 1, 2015Date of Patent: September 11, 2018Assignee: HITACHI METALS, LTD.Inventors: Yohei Shirakawa, Koki Hirano, Yoshitake Ageishi
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Patent number: 9979555Abstract: A communication monitoring device includes, a first voltage application circuit 5, mounted on a first connector portion 2b arranged at one end of a communication cable 2 having at least two signal lines 2a, or a first repeater 3 or a first communication device, connecting the first connector portion 2b, wherein the first voltage application circuit 5 applies an alternating current voltage at a predetermined frequency to between any signal lines 2a in the communication cable 2, and a second display portion 6, mounted on a second connector portion 2c arranged at an other end of the communication cable 2, or a second repeater 4 or a second communication device, connecting the second connector portion 2c, wherein the second display portion 6 detects and displays the alternating current voltage at the predetermined frequency applied to between the any signal lines 2a in the communication cable 2.Type: GrantFiled: July 6, 2016Date of Patent: May 22, 2018Assignee: HITACHI METALS, LTD.Inventors: Yohei Shirakawa, Koki Hirano
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Publication number: 20180128709Abstract: An optical fiber monitoring system monitors an inter-building optical fiber connecting a first building and a second building. The optical fiber monitoring system includes a first visualization panel provided in the first building and optically connected to an one end of the inter-building optical fiber, a second visualization panel provided in the second building and optically connected to an other end of the inter-building optical fiber, and a monitoring light source provided in the first building to input a monitoring light into the inter-building optical fiber. The first visualization panel includes a first photosensor that partially leaks the monitoring light inputted into the inter-building optical fiber from the monitoring light source and detects an amount of a leaked light. The second visualization panel includes a second photosensor that partially leaks a light from the inter-building optical fiber and detects amount of a leaked light.Type: ApplicationFiled: November 2, 2017Publication date: May 10, 2018Inventors: Kanako SUZUKI, Koki HIRANO, Mikio OHKOSHI, Wataru OHNUKI, Yoshihiro NAKATANI, Takao NISHIKAWA, Toshiyuki SUZUKI, Toshio SAKAI
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Patent number: 9887499Abstract: A communication cable connector includes a first connector section to be connected to one end of a communication cable including at least two or more signal lines, a second connector section to be connected to an other end of the communication cable, a first voltage applying circuit mounted to the first connector section to apply a DC voltage between any signal lines of the communication cable, and a first light emitting circuit mounted to the second connector section to emit light when the DC voltage is applied between the any signal lines of the communication cable by the first voltage applying circuit.Type: GrantFiled: June 17, 2015Date of Patent: February 6, 2018Assignee: HITACHI METALS, LTD.Inventors: Koki Hirano, Yohei Shirakawa
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Publication number: 20170365373Abstract: An insulated wire includes a conductor, a flame-retardant inner layer that is provided around the conductor and includes a metal hydroxide, and a water ingress prevention layer provided around the flame-retardant inner layer. The insulated wire may further include a flame-retardant outer layer provided around the water ingress prevention layer.Type: ApplicationFiled: June 13, 2017Publication date: December 21, 2017Inventors: Koki HIRANO, Masafumi KAGA, Tamotsu KIBE, Seiichi KASHIMURA, Makoto IWASAKI
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Patent number: 9842482Abstract: A signal detecting device includes a visualization device including a plural connectors to which a communication cable is connected, a plural detecting circuits that are provided for each of the connectors to be detected, branch and extract a part of a signal transmitted through the communication cable connected to the connectors, and indicate an existence of an data communication based on the extracted signal, and a detecting card that is insertable into and detachable from a card connector arranged in the visualization device and mounts at least a part of the detecting circuit.Type: GrantFiled: August 26, 2016Date of Patent: December 12, 2017Assignee: Hitachi Metals, Ltd.Inventors: Yohei Shirakawa, Koki Hirano, Yoshitake Ageishi, Yuki Haga