Patents by Inventor Akio Ito

Akio Ito 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: 20210361986
    Abstract: A sheet-like filter includes a first fiber that is mainly composed of polylactic acid, and a second fiber that is mainly composed of polylactic acid and has a core portion and a cover layer covering the core portion, in which the cover layer functions as a binder for fusing the first fiber and the second fiber. In addition, when a melting point of the core portion is denoted by Tm1 and a melting point of the cover layer is denoted by Tm2, it may be Tm2<Tm1.
    Type: Application
    Filed: May 18, 2021
    Publication date: November 25, 2021
    Inventors: Satomi YOSHIOKA, Naotaka HIGUCHI, Shigeo FUJITA, Shunichi SEKI, Kazuhiro ICHIKAWA, Akio ITO
  • Publication number: 20210347111
    Abstract: Provided is the method for manufacturing a three-dimensional structure with a less amount of internal voids or bubbles, and also to provide a 3D printer filament used for manufacturing such three-dimensional structure. The method for manufacturing a three-dimensional structure, the method comprises melting and depositing a filament using a 3D printer, the filament comprising a commingled yarn that contains a continuous reinforcing fiber (A) and a continuous thermoplastic resin fiber (B), with a dispersity of the continuous reinforcing fiber (A) in the commingled yarn of 60 to 100%.
    Type: Application
    Filed: July 20, 2021
    Publication date: November 11, 2021
    Inventors: Asami NAKAI, Akio OHTANI, Hiroto ITO, Fumiya HIRANO, Nobuki HIROOKA, Nobuhiko MATSUMOTO
  • Patent number: 11149099
    Abstract: Provided are a novel catalyst component for producing an ?-olefin (co)polymer, and a production method using the same. A metal complex is obtainable by contacting a compound represented by the general formula [I] or [II] with a transition metal compound containing a transition metal belonging to 9th to 11th group: wherein R1, R2, R3 and R4 represent (i) hydrogen, (ii) a halogen, (iii) a linear alkyl or the like, or (iv) OR9 or the like; R5 and R6 represent a linear alkyl group or the like; any one of R1-R6 may have a heteroatom or a heteroatom containing group; E1 represents phosphorus, arsenic or antimony; X1 represents oxygen or sulfur; Z represents hydrogen or a leaving group.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: October 19, 2021
    Assignees: THE UNIVERSITY OF TOKYO, JAPAN POLYCHEM CORPORATION
    Inventors: Kyoko Nozaki, Shingo Ito, Wen-Jie Tao, Yohei Konishi, Hisashi Ohtaki, Yasuo Oishi, Akio Tanna, Takao Tayano
  • Patent number: 11117984
    Abstract: Provided are a novel catalyst component for producing an ?-olefin (co)polymer, and a production method using the same. A metal complex is obtainable by contacting a compound represented by the general formula [I] or [II] with a transition metal compound containing a transition metal belonging to 9th to 11th group: wherein R1, R2, R3 and R4 represent (i) hydrogen, (ii) a halogen, (iii) a linear alkyl or the like, or (iv) OR9 or the like; R5 and R6 represent a linear alkyl group or the like; any one of R1-R6 may have a heteroatom or a heteroatom containing group; E1 represents phosphorus, arsenic or antimony; X1 represents oxygen or sulfur; Z represents hydrogen or a leaving group.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: September 14, 2021
    Assignees: THE UNIVERSITY OF TOKYO, JAPAN POLYCHEM CORPORATION
    Inventors: Kyoko Nozaki, Shingo Ito, Wen-Jie Tao, Yohei Konishi, Hisashi Ohtaki, Yasuo Oishi, Akio Tanna, Takao Tayano
  • Patent number: 11117312
    Abstract: Provided is the method for manufacturing a three-dimensional structure with a less amount of internal voids or bubbles, and also to provide a 3D printer filament used for manufacturing such three-dimensional structure. The method for manufacturing a three-dimensional structure, the method comprises melting and depositing a filament using a 3D printer, the filament comprising a commingled yarn that contains a continuous reinforcing fiber (A) and a continuous thermoplastic resin fiber (B), with a dispersity of the continuous reinforcing fiber (A) in the commingled yarn of 60 to 100%.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: September 14, 2021
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Asami Nakai, Akio Ohtani, Hiroto Ito, Fumiya Hirano, Nobuki Hirooka, Nobuhiko Matsumoto
  • Publication number: 20210273643
    Abstract: There is configured a charge pump circuit for outputting a phase difference current to a first node, the charge pump circuit including a first current source coupled between a high potential power supply node and the first node, a second current source coupled between a low potential power supply node and the first node, a first switch coupled between the first current source and the first node, a second switch coupled between the second current source and the first node, a third switch coupled between the first current source and a second node, a fourth switch coupled between the second current source and the second node, a third current source for supplying a negative offset current to the first node, and a push-type differential amplifier circuit an input side of which is coupled to the first node, and an output side of which is coupled to the second node.
    Type: Application
    Filed: February 26, 2021
    Publication date: September 2, 2021
    Inventors: Akio TSUTSUMI, Ryo ICHIKAWA, Hisahiro ITO, Yasunari FURUYA
  • Patent number: 11075315
    Abstract: An optical semiconductor element includes a semiconductor substrate, a first laminated structure provided on a front surface of the semiconductor substrate, and a second laminated structure provided on the front surface of the semiconductor substrate, the first laminated structure includes a first quantum cascade region, the second laminated structure includes a dummy region having the same layer structure as the first quantum cascade region, a second quantum cascade region provided on the front surface of the semiconductor substrate via the dummy region, and one of the first quantum cascade region and the second quantum cascade region is a quantum cascade laser, and the other of the first quantum cascade region and the second quantum cascade region is a quantum cascade detector.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: July 27, 2021
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Masahiro Hitaka, Akio Ito, Tatsuo Dougakiuchi, Kazuue Fujita, Tadataka Edamura
  • Patent number: 10953654
    Abstract: An ink absorber includes: an ink absorbing member that is capable of absorbing ink; an accommodation section that accommodates the ink absorbing member; and a detachment structure section that detaches the ink absorbing member from the accommodation section. In the ink absorber, it is preferable that the accommodation section have a bottom section and side wall sections standing up from the bottom section, that inclined surfaces inclined relative to the bottom section be formed inside the side wall sections, and that the detachment structure section be configured with the inclined surfaces.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: March 23, 2021
    Inventors: Yoichi Miyasaka, Kaneo Yoda, Nobutaka Urano, Seiichi Taniguchi, Akio Ito, Shunichi Seki
  • Publication number: 20210057875
    Abstract: A sintered body of the present invention includes cerium oxide and cerium fluoride or yttrium fluoride.
    Type: Application
    Filed: August 5, 2020
    Publication date: February 25, 2021
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Atsushi SUGIYAMA, Akio ITO, Tadataka EDAMURA
  • Patent number: 10847522
    Abstract: A semiconductor device includes a substrate; a transistor formed on a surface of the substrate; a first insulating film formed above the transistor; a second semiconductor film formed on the first semiconductor film; a third semiconductor film formed on the second semiconductor film; a fourth semiconductor film formed on the third semiconductor film; and a ferroelectric capacitor formed on the fourth insulating film, wherein a hydrogen permeability of the third insulating film is higher than a hydrogen permeability of the first insulating film, and a hydrogen permeability and an oxygen permeability of the second insulating film and of the fourth insulating film are higher than the hydrogen permeability and an oxygen permeability of the first insulating film and of the third insulating film.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: November 24, 2020
    Assignee: FUJITSU SEMICONDUCTOR MEMORY SOLUTION LIMITED
    Inventors: Kouichi Nagai, Ko Nakamura, Mitsuhiro Nakamura, Akio Ito
  • Patent number: 10828903
    Abstract: An ink absorbing member accommodation container includes: an accommodation container that has an accommodation space for accommodating an ink absorbing member containing water-absorbable resin capable of absorbing ink inside the accommodation container and that includes an inlet port through which the ink flows into the accommodation space; and a flying preventing mechanism that prevents a constituent material of the ink absorbing member from flying from the inlet port to an outside of the accommodation container.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: November 10, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Kaneo Yoda, Yoichi Miyasaka, Nobutaka Urano, Seiichi Taniguchi, Akio Ito, Shunichi Seki
  • Patent number: 10591413
    Abstract: A fluid analyzer includes a substrate, a quantum cascade laser formed on a surface of the substrate and including a first light-emitting surface and a second light-emitting surface facing each other in a predetermined direction parallel to the surface, a quantum cascade detector formed on the surface and including the same layer structure as the quantum cascade laser and a light incident surface facing the second light-emitting surface in the predetermined direction, and an optical element disposed on an optical path of light emitted from the first light-emitting surface across an inspection region in which a fluid to be analyzed is to be disposed and reflecting the light to feed the light back to the first light-emitting surface.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: March 17, 2020
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Tatsuo Dougakiuchi, Akio Ito, Kazuue Fujita, Tadataka Edamura
  • Publication number: 20190326466
    Abstract: An optical semiconductor element includes a semiconductor substrate, a first laminated structure provided on a front surface of the semiconductor substrate, and a second laminated structure provided on the front surface of the semiconductor substrate, the first laminated structure includes a first quantum cascade region, the second laminated structure includes a dummy region having the same layer structure as the first quantum cascade region, a second quantum cascade region provided on the front surface of the semiconductor substrate via the dummy region, and one of the first quantum cascade region and the second quantum cascade region is a quantum cascade laser, and the other of the first quantum cascade region and the second quantum cascade region is a quantum cascade detector.
    Type: Application
    Filed: April 17, 2019
    Publication date: October 24, 2019
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Masahiro HITAKA, Akio ITO, Tatsuo DOUGAKIUCHI, Kazuue FUJITA, Tadataka EDAMURA
  • Patent number: 10451026
    Abstract: This underwater device is twin-motor underwater floating-type power generation device that is provided with: a device main body that is equipped with a pair of pods that have a turbine, and with a connecting beam that connects these pods together in parallel with each other; a sinker; and tether cables that tether the device main body to the seabed via this sinker. The respective turbines of the pods are each provided with variable pitch turbine blades. This device is also provided with a depth meter that detects deviation in posture in the roll direction that is generated in the pair of pods, and a posture controller that controls the pitch of the variable pitch turbine blades of the respective turbines so as to nullify any deviation in posture in the roll direction that has been generated in the pair of pods and has been detected by the depth meter.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: October 22, 2019
    Assignee: IHI CORPORATION
    Inventors: Norihisa Handa, Shigeki Nagaya, Yoshiyuki Yamane, Akio Ito
  • Patent number: 10439363
    Abstract: A method of manufacturing a quantum cascade laser beam source (1) includes: preparing a semiconductor stacked body (20); forming a pair of first excavated portions (41 and 42) and a ridge portion which is interposed between the pair of first excavated portions (41 and 42); forming channel structures (51 and 52) and circumferential edge portions (61 and 62) which are formed to interpose the channel structures (51 and 52) between the ridge portion (30) and the circumferential edge portion; forming an electrode pattern (81) in contact with a first area (29a) and forming an electrode pattern (82) in contact with a second area (22a); fixing a crystal growth surface side to a support substrate (91); removing an Fe-doped (semi-insulating) InP single-crystal substrate (21); fixing a Si substrate (93); and peeling the support substrate (91).
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: October 8, 2019
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Akio Ito, Kazuue Fujita, Daisuke Kawaguchi, Tatsuo Dougakiuchi, Tadataka Edamura
  • Publication number: 20190299629
    Abstract: An ink absorbing member accommodation container includes: an accommodation container that has an accommodation space for accommodating an ink absorbing member containing water-absorbable resin capable of absorbing ink inside the accommodation container and that includes an inlet port through which the ink flows into the accommodation space; and a flying preventing mechanism that prevents a constituent material of the ink absorbing member from flying from the inlet port to an outside of the accommodation container.
    Type: Application
    Filed: March 26, 2019
    Publication date: October 3, 2019
    Inventors: Kaneo YODA, Yoichi MIYASAKA, Nobutaka URANO, Seiichi TANIGUCHI, Akio ITO, Shunichi SEKI
  • Patent number: D892656
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: August 11, 2020
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Tatsuo Dougakiuchi, Akio Ito, Masahiro Hitaka, Tadataka Edamura
  • Patent number: D892657
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: August 11, 2020
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Tatsuo Dougakiuchi, Akio Ito, Masahiro Hitaka, Tadataka Edamura
  • Patent number: D899279
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: October 20, 2020
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Tatsuo Dougakiuchi, Akio Ito, Masahiro Hitaka, Tadataka Edamura
  • Patent number: D899284
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: October 20, 2020
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Tatsuo Dougakiuchi, Akio Ito, Masahiro Hitaka, Tadataka Edamura