Patents by Inventor Yoichi Hosokawa

Yoichi Hosokawa 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: 10598862
    Abstract: Provided is an optical element module including: a substrate; an optical modulator unit that is formed in the substrate and includes an optical waveguide; a first lens unit that is disposed on an end surface of the substrate, and includes a lens portion at which a signal light beam emitted from the optical modulator unit is collimated; and a second lens unit that introduces the signal light beam passing through the first lens unit to an optical fiber.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: March 24, 2020
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Norikazu Miyazaki, Yoichi Hosokawa, Yuu Kataoka
  • Patent number: 10578893
    Abstract: An optical waveguide element that has improved frequency response in a high frequency region is provided. An optical waveguide element includes: a substrate that has an electro-optic effect; an optical waveguide that is formed on the substrate; a control electrode that is for modulating light waves propagating through the optical waveguide; and a reinforcing substrate that holds the substrate via an adhesion layer, and the reinforcing substrate has a low-dielectric constant portion with a lower dielectric constant than that of the reinforcing substrate at least in a part of a region in a plan view of the reinforcing substrate such that the low-dielectric constant portion partitions the reinforcing substrate in a thickness direction.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: March 3, 2020
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Yoichi Hosokawa, Masayuki Motoya
  • Patent number: 10444326
    Abstract: Disclosed herein is a frequency modulated continuous wave (FMCW) radar. The FMCW radar includes: a transmission signal generator that generates a frequency-modulated transmission signal; a transmission signal sender that sends the transmission signal; a receiver that receives a reflected wave of the transmission signal; an adjuster that adjusts the amplitude and phase of a cancel signal, which cancels a leakage signal component in a received signal, in accordance with a variation in the frequency of the transmission signal; and a superimposer that superimposes the cancel signal over the received signal to cancel the leakage signal component.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: October 15, 2019
    Assignee: SOCIONEXT INC.
    Inventors: Yoshifumi Hosokawa, Isao Imazeki, Yoichi Nagaso
  • Publication number: 20190302493
    Abstract: An optical waveguide element that has improved frequency response in a high frequency region is provided. An optical waveguide element includes: a substrate that has an electro-optic effect; an optical waveguide that is formed on the substrate; a control electrode that is for modulating light waves propagating through the optical waveguide; and a reinforcing substrate that holds the substrate via an adhesion layer, and the reinforcing substrate has a low-dielectric constant portion with a lower dielectric constant than that of the reinforcing substrate at least in a part of a region in a plan view of the reinforcing substrate such that the low-dielectric constant portion partitions the reinforcing substrate in a thickness direction.
    Type: Application
    Filed: March 21, 2019
    Publication date: October 3, 2019
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Yoichi HOSOKAWA, Masayuki MOTOYA
  • Patent number: 10416388
    Abstract: An optical waveguide device includes a substrate in which an optical waveguide is formed. The optical waveguide has a Y-branched structure in which light beams propagating through a main waveguide are branched into two parts, and a three-branched structure in which the optical waveguide is branched into three waveguides including the main waveguide and two sub-waveguides on both sides of the main waveguide at a front stage of the Y-branched structure. The main waveguide includes a linear waveguide portion in which a waveguide width is constant and a tapered waveguide portion in which the waveguide width gradually increases between the three-branched structure and the Y-branched structure.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: September 17, 2019
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Yuu Kataoka, Yoichi Hosokawa, Norikazu Miyazaki
  • Patent number: 10228605
    Abstract: A waveguide optical element which includes a plurality of optical waveguides provided on a substrate having an electro-optic effect includes: a plurality of signal electrodes controlling light waves propagating through the optical waveguides; and a plurality of ground electrodes provided so as to interpose each of the signal electrodes therebetween, in which at least one of the ground electrodes includes a first layer and a second layer formed on the first layer, the second layer is formed such that a distance between the second layer and the signal electrode adjacent to the second layer is larger than a distance between the first layer and said signal electrode adjacent to said second layer, and a thickness of the ground electrode which includes the first layer and the second layer is 25 ?m or more.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: March 12, 2019
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Norikazu Miyazaki, Yoichi Hosokawa, Toru Sugamata
  • Publication number: 20180284352
    Abstract: Provided is an optical element module including: a substrate; an optical modulator unit that is formed in the substrate and includes an optical waveguide; a first lens unit that is disposed on an end surface of the substrate, and includes a lens portion at which a signal light beam emitted from the optical modulator unit is collimated; and a second lens unit that introduces the signal light beam passing through the first lens unit to an optical fiber.
    Type: Application
    Filed: March 30, 2018
    Publication date: October 4, 2018
    Inventors: Norikazu MIYAZAKI, Yoichi HOSOKAWA, Yuu KATAOKA
  • Publication number: 20180284351
    Abstract: An optical waveguide device includes a substrate in which an optical waveguide is formed. The optical waveguide has a Y-branched structure in which light beams propagating through a main waveguide are branched into two parts, and a three-branched structure in which the optical waveguide is branched into three waveguides including the main waveguide and two sub-waveguides on both sides of the main waveguide at a front stage of the Y-branched structure. The main waveguide includes a linear waveguide portion in which a waveguide width is constant and a tapered waveguide portion in which the waveguide width gradually increases between the three-branched structure and the Y-branched structure.
    Type: Application
    Filed: March 28, 2018
    Publication date: October 4, 2018
    Inventors: Yuu KATAOKA, Yoichi HOSOKAWA, Norikazu MIYAZAKI
  • Publication number: 20180284558
    Abstract: A waveguide optical element which includes a plurality of optical waveguides provided on a substrate having an electro-optic effect includes: a plurality of signal electrodes controlling light waves propagating through the optical waveguides; and a plurality of ground electrodes provided so as to interpose each of the signal electrodes therebetween, in which at least one of the ground electrodes includes a first layer and a second layer formed on the first layer, the second layer is formed such that a distance between the second layer and the signal electrode adjacent to the second layer is larger than a distance between the first layer and said signal electrode adjacent to said second layer, and a thickness of the ground electrode which includes the first layer and the second layer is 25 ?m or more.
    Type: Application
    Filed: February 12, 2018
    Publication date: October 4, 2018
    Inventors: Norikazu Miyazaki, Yoichi Hosokawa, Toru Sugamata
  • Patent number: 10088699
    Abstract: Modulation electrodes, bias electrodes, and bias electrodes are disposed in this order in a light wave-travelling direction in an optical modulation region modulating light having a wavelength. On the other hand, in an optical modulation region modulating light having a wavelength, the bias electrodes, the bias electrodes, and the modulation electrodes are disposed in this order in the light wave-travelling direction. That is, an order of the modulation electrodes and the bias electrodes in a longitudinal direction of a substrate is changed for each of the wavelengths.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: October 2, 2018
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Norikazu Miyazaki, Yoichi Hosokawa
  • Publication number: 20180166697
    Abstract: A fuel cell electrode catalyst includes: a noble-metal-supported catalyst including a carbon support and a noble metal supported on the carbon support; and a water-repellent material with which the noble-metal-supported catalyst is modified. The carbon support is mesoporous carbon in which a pore volume of pores having a pore size of 2 nm to 5 nm is 2.1 ml/g to 2.4 ml/g. An amount of the water-repellent material is 3% by weight to 7% by weight with respect to a total weight of the mesoporous carbon and the water-repellent material.
    Type: Application
    Filed: December 8, 2017
    Publication date: June 14, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Toru YAMAMOTO, Tetsuo NAGAMI, Kazunobu ISHIBASHI, Hiromitsu TANAKA, Yoichi HOSOKAWA
  • Patent number: 9923224
    Abstract: A proton exchange material includes a linear perfluorinated carbon backbone chain and a side chain extending off of the linear perfluorinated carbon backbone chain. The side chain includes at least one sulfonimide group, —SO2-NH—SO2-, and a carbon chain link between the at least one sulfonimide group and the linear perfluorinated carbon backbone chain. The carbon chain link has less than three carbon atoms.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: March 20, 2018
    Assignees: Audi AG, Toyota Jidosha Kabushiki Kaisha
    Inventors: Zhiwei Yang, Mallika Gummalla, Yoichi Hosokawa
  • Publication number: 20180059445
    Abstract: Modulation electrodes, bias electrodes, and bias electrodes are disposed in this order in a light wave-travelling direction in an optical modulation region modulating light having a wavelength. On the other hand, in an optical modulation region modulating light having a wavelength, the bias electrodes, the bias electrodes, and the modulation electrodes are disposed in this order in the light wave-travelling direction. That is, an order of the modulation electrodes and the bias electrodes in a longitudinal direction of a substrate is changed for each of the wavelengths.
    Type: Application
    Filed: August 29, 2017
    Publication date: March 1, 2018
    Inventors: Norikazu MIYAZAKI, Yoichi HOSOKAWA
  • Patent number: 9663600
    Abstract: A method of fabricating low EW, water insoluble electrolyte materials includes providing a perfluorinated polymer resin that includes perfluorinated carbon-carbon backbone chain and sulfonyl fluoride ended perfluorinated side chains, extending from the perfluorinated backbone chains via an ether linkage, exposing the perfluorinated polymer resin to ammonia gas to convert the sulfonyl fluoride groups to sulfonamide groups, —SO2—NH2, which reacts with sulfonyl fluoride containing chemical agent(s) to form sulfonimide groups, and at the same time, generates low EW, 3-dimensional cross-linked, water-insoluble perfluorinated polymer electrolyte materials.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: May 30, 2017
    Assignees: Audi AG, Toyota Jidosha Kabushiki Kaisha, The Board of Trustees of the University of Alabama
    Inventors: Zhiwei Yang, Mallika Gummalla, Yoichi Hosokawa, Joseph S. Thrasher, Todd S. Sayler, Andrej Matsnev, Richard Edward Fernandez, Alfred Waterfeld
  • Publication number: 20160181643
    Abstract: A method of fabricating an electrolyte membrane includes providing a reinforcement substrate that has impregnated therein a linear perfluorinated electrolyte polymer resin, and cross-linking the electrolyte polymer resin in-situ in the reinforcement substrate to thereby form a reinforced electrolyte membrane with cross-linked perfluorinated electrolyte polymer material impregnated therein.
    Type: Application
    Filed: August 6, 2013
    Publication date: June 23, 2016
    Inventors: Zhiwei YANG, Mallika GUMMALLA, Joseph S. THRASHER, Yoichi HOSOKAWA
  • Publication number: 20150337064
    Abstract: A method of fabricating low EW, water insoluble electrolyte materials includes providing a perfluorinated polymer resin that includes perfluorinated carbon-carbon backbone chain and sulfonyl fluoride ended perfluorinated side chains, extending from the perfluorinated backbone chains via an ether linkage, exposing the perfluorinated polymer resin to ammonia gas to convert the sulfonyl fluoride groups to sulfonamide groups, —SO2—NH2, which reacts with sulfonyl fluoride containing chemical agent(s) to form sulfonimide groups, and at the same time, generates low EW, 3-dimensional cross-linked, water-insoluble perfluorinated polymer electrolyte materials.
    Type: Application
    Filed: December 21, 2012
    Publication date: November 26, 2015
    Inventors: Zhiwei YANG, Mallika GUMMALLA, Yoichi HOSOKAWA, Joseph S. THRASHER, Todd S. SAYLER, Andrej MATSNEV, Richard Edward FERNANDEZ, Alfred WATERFELD
  • Publication number: 20150333354
    Abstract: A proton exchange material includes a linear perfluorinated carbon backbone chain and a side chain extending off of the linear perfluorinated carbon backbone chain. The side chain includes at least one sulfonimide group, —SO2—NH—SO2—, and a carbon chain link between the at least one sulfonimide group and the linear perfluorinated carbon backbone chain. The carbon chain link has less than three carbon atoms.
    Type: Application
    Filed: December 21, 2012
    Publication date: November 19, 2015
    Inventors: Zhiwei YANG, Mallika GUMMALLA, Yoichi HOSOKAWA
  • Publication number: 20130281555
    Abstract: A proton exchange material includes perfluorinated carbon backbone chains and side chains extending off of the perfluorinated carbon backbone chains. The perfluorinated side chains include cross-link chains that have multiple sulfonimide groups, —SO2—NH—SO2—.
    Type: Application
    Filed: January 11, 2011
    Publication date: October 24, 2013
    Applicants: UTC Power Corporation
    Inventors: Zhiwei Yang, Mallika Gummalla, Ned E. Cipollini, Fuqiang Liu, Yoichi Hosokawa, Takumi Taniguchi, Joseph S. Thrasher, Richard Edward Fernandez, Todd S. Sayler, Alfred Waterfeld
  • Patent number: 8440365
    Abstract: An electrolyte having a structure where a fluorinated hydrophilic segment A represented by -E2-[Rf-E1]m- and a hydrocarbon hydrophobic segment B are alternately bonded to each other through chemical bond and a production process therefor, and an electrolyte membrane, a production process therefor, a catalyst layer and a fuel cell using the same. Rf is a linear or a branched perfluoro chain having one or more carbon atoms, E1, and E2 are each a proton conductive portion represented by Formula —(CONM)i1(CO)i2(SO2NM)i3(SO2)i4— (0?i1, 0?i2?1, 0?i3, 0?i4?1, 0<i1+i3, i1 to i4 are each an integer, and M is proton, alkali metal, or alkali earth metal), 2?m (m is an integer), and Rf, E1, and E2 may be each arbitrarily selected in the repeating unit.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: May 14, 2013
    Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Toyota Jidosha Kabushiki Kaisha
    Inventors: Naohiro Hoshikawa, Naoki Hasegawa, Yoichi Hosokawa, Masaya Kawasumi, Akihiro Shinohara, Hiromitsu Tanaka, Masayoshi Takami, Toshihiko Yoshida
  • Patent number: 7592375
    Abstract: Disclosed herein is an ion conductive polymer comprising a unit represented by Formula (1) below: —SO2[N?SO2(M+)]X1-??(1) wherein X1 is an integer greater than 1, and M+ is H+ or Li+. Further disclosed is an imide monomer represented by Formula (A) below: Z1-SO2[N?SO2M+]Y-Z2 ??(A) wherein Y is an integer of 2 or greater, Z1 is OH, F, Cl, Br, I or NZ3Z4 (in which Z3 and Z4 are each independently H, M or SiMe3, and M is a metal element), Z2 is OH, F, Cl, Br, I or NZ3Z4 (in which Z3 and Z4 are each independently H, M or SiMe3, and M is a metal element), and M+ is H+ or Li+.
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: September 22, 2009
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Greg Shafer, Masaya Kawasumi, Yoichi Hosokawa, Naoki Hasegawa, Satoru Yamamoto, Kenji Imai, Yuko Murayama, Shiaki Hyodo