Patents by Inventor Keita Nakanishi

Keita Nakanishi 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: 20240111335
    Abstract: A tape member of an electronic apparatus includes: double-sided adhesive tape having a releasable property by stretching; and a sheet-shaped handle member connected to the double-sided adhesive tape, a user holding the handle member when stretch-releasing the double-sided adhesive tape. The handle member is wound around the double-sided adhesive tape in a direction intersecting the longitudinal direction of the double-sided adhesive tape.
    Type: Application
    Filed: August 2, 2023
    Publication date: April 4, 2024
    Applicant: LENOVO (SINGAPORE) PTE. LTD.
    Inventors: So Nakanishi, Satoshi Hosoya, Takehito Yamauchi, Keita Ishikawa
  • Publication number: 20220190739
    Abstract: A power conversion apparatus includes a power conversion circuit including a semiconductor element in each of upper and lower arms between DC links, and being electrically connected to an AC load at an AC end. A voltage detector detects a voltage between the DC links. A current detector detects a current flowing in the AC end. A control unit generates a gate command based on a voltage value obtained by the voltage detector and a current value obtained by the current detector. A gate driver drives the semiconductor element based on the gate command, includes a gate current detector and a circuit to determine a drive state of the semiconductor element from the gate current, and outputs a value corresponding to the drive state to the control unit.
    Type: Application
    Filed: September 15, 2021
    Publication date: June 16, 2022
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Takashi TAKAGI, Keita NAKANISHI
  • Patent number: 10202399
    Abstract: Provided is a compound having a D-amino acid oxidase (DAAO) inhibitory action, and useful as, for example, a prophylaxis and/or therapeutic agent for schizophrenia or neuropathic pain. The present inventors have studied a compound that inhibits DAAO, and confirm that a dihydroxy aromatic heterocyclic compound has a DAAO inhibitory action, and completed the present invention. That is, the dihydroxy aromatic heterocyclic compound of the present invention has a good DAAO inhibitory action, and can be used as a prophylaxis and/or therapeutic agent for, for example, schizophrenia or neuropathic pain.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: February 12, 2019
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Takeshi Hondo, Keita Nakanishi, Tatsuya Niimi, Masaichi Warizaya, Ichiji Namatame, Katsuya Harada
  • Publication number: 20170107226
    Abstract: Provided is a compound having a D-amino acid oxidase (DAAO) inhibitory action, and useful as, for example, a prophylaxis and/or therapeutic agent for schizophrenia or neuropathic pain. The present inventors have studied a compound that inhibits DAAO, and confirm that a dihydroxy aromatic heterocyclic compound has a DAAO inhibitory action, and completed the present invention. That is, the dihydroxy aromatic heterocyclic compound of the present invention has a good DAAO inhibitory action, and can be used as a prophylaxis and/or therapeutic agent for, for example, schizophrenia or neuropathic pain.
    Type: Application
    Filed: December 22, 2016
    Publication date: April 20, 2017
    Inventors: Takeshi HONDO, Keita NAKANISHI, Tatsuya NIIMI, Masaichi WARIZAYA, Ichiji NAMATAME, Katsuya HARADA
  • Patent number: 9585889
    Abstract: On the basis of a cathepsin S inhibitory effect, an excellent agent for treating or preventing autoimmune disease, allergic disease, graft rejection of an organ, bone marrow or tissue, systemic lupus erythematosus, or the like is provided. It was found that a nitrogen-containing bicyclic heterocyclic compound has an excellent cathepsin S inhibitory effect, thereby completing the invention. The compound of the present invention has an cathepsin S inhibitory effect, and can be used as an agent for preventing and/or treating autoimmune disease, allergic disease, graft rejection of an organ, bone marrow or tissue, systemic lupus erythematosus, or the like.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: March 7, 2017
    Assignee: Astellas Pharma Inc.
    Inventors: Yutaka Nakajima, Sunao Imada, Yuji Takasuna, Naohiro Aoyama, Takahiro Nigawara, Shohei Shirakami, Fumiyuki Shirai, Junji Sato, Keita Nakanishi, Kaori Kubo
  • Patent number: 9562020
    Abstract: Provided is a compound having a D-amino acid oxidase (DAAO) inhibitory action, and useful as for example, a prophylaxis and/or therapeutic agent for schizophrenia or neuropathic pain. The present inventors have studied a compound that inhibits DAAO, and confirm that a dihydroxy aromatic heterocyclic compound has a DAAO inhibitory action, and completed the present invention. That is, the dihydroxy aromatic heterocyclic compound of the present invention has a good DAAO inhibitory action, and can be used as a prophylaxis and/or therapeutic agent for, for example, schizophrenia or neuropathic pain.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: February 7, 2017
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Takeshi Hondo, Keita Nakanishi, Tatsuya Niimi, Masaichi Warizaya, Ichiji Namatame, Katsuya Harada
  • Publication number: 20160228442
    Abstract: On the basis of a cathepsin S inhibitory effect, an excellent agent for treating or preventing autoimmune disease, allergic disease, graft rejection of an organ, bone marrow or tissue, systemic lupus erythematosus, or the like is provided. It was found that a nitrogen-containing bicyclic heterocyclic compound has an excellent cathepsin S inhibitory effect, thereby completing the invention. The compound of the present invention has an cathepsin S inhibitory effect, and can be used as an agent for preventing and/or treating autoimmune disease, allergic disease, graft rejection of an organ, bone marrow or tissue, systemic lupus erythematosus, or the like.
    Type: Application
    Filed: February 8, 2016
    Publication date: August 11, 2016
    Applicant: ASTELLAS PHARMA INC.
    Inventors: Yutaka Nakajima, Sunao Imada, Yuji Takasuna, Naohiro Aoyama, Takahiro Nigawara, Shohei Shirakami, Fumiyuki Shirai, Junji Sato, Keita Nakanishi, Kaori Kubo
  • Patent number: 9328118
    Abstract: [Problem] On the basis of a cathepsin S inhibitory effect, an excellent agent for treating or preventing autoimmune disease, allergic disease, graft rejection of an organ, bone marrow or tissue, systemic lupus erythematosus, or the like is provided. [Means for Solution] It was found that a nitrogen-containing bicyclic heterocyclic compound has the excellent cathepsin S inhibitory effect, thereby completing the invention. The compound of the present invention has the cathepsin S inhibitory effect, and can be used as an agent for preventing and/or treating autoimmune disease, allergic disease, graft rejection of an organ, bone marrow or tissue, systemic lupus erythematosus, or the like.
    Type: Grant
    Filed: April 17, 2013
    Date of Patent: May 3, 2016
    Assignee: Astellas Pharma Inc.
    Inventors: Yutaka Nakajima, Sunao Imada, Yuji Takasuna, Naohiro Aoyama, Takahiro Nigawara, Shohei Shirakami, Fumiyuki Shirai, Junji Sato, Keita Nakanishi, Kaori Kubo
  • Publication number: 20160039771
    Abstract: Provided is a compound having a D-amino acid oxidase (DAAO) inhibitory action, and useful as for example, a prophylaxis and/or therapeutic agent for schizophrenia or neuropathic pain. The present inventors have studied a compound that inhibits DAAO, and confirm that a dihydroxy aromatic heterocyclic compound has a DAAO inhibitory action, and completed the present invention. That is, the dihydroxy aromatic heterocyclic compound of the present invention has a good DAAO inhibitory action, and can be used as a prophylaxis and/or therapeutic agent for, for example, schizophrenia or neuropathic pain.
    Type: Application
    Filed: October 16, 2015
    Publication date: February 11, 2016
    Inventors: Takeshi HONDO, Keita NAKANISHI, Tatsuya NIIMI, Masaichi WARIZAYA, Ichiji NAMATAME, Katsuya HARADA
  • Patent number: 9257874
    Abstract: A rotor unit includes a plurality of rotating bodies arranged along a central axis. Each of the plurality of rotating bodies includes an annular rotor core surrounding the central axis, a plurality of magnets arranged in the circumferential direction around the rotor core, and a holder arranged to hold the magnets. Further, the holder includes a plurality of partitioning portions each axially extending between respective ones of the plurality of magnets. The axial dimension of the plurality of partitioning portions is longer than the axial dimension of the respective ones of the plurality of magnets which are held by the plurality of partitioning portions. Further, the plurality of rotating bodies is disposed in a state where the circumferential positions of the plurality of magnets are out of alignment.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: February 9, 2016
    Assignee: NIDEC CORPORATION
    Inventors: Hidehiro Haga, Keita Nakanishi, Takayuki Migita, Masato Aono
  • Patent number: 9212147
    Abstract: Provided is a compound having a D-amino acid oxidase (DAAO) inhibitory action, and useful as for example, a prophylaxis and/or therapeutic agent for schizophrenia or neuropathic pain. The present inventors have studied a compound that inhibits DAAO, and confirm that a dihydroxy aromatic heterocyclic compound has a DAAO inhibitory action, and completed the present invention. That is, the dihydroxy aromatic heterocyclic compound of the present invention has a good DAAO inhibitory action, and can be used as a prophylaxis and/or therapeutic agent for, for example, schizophrenia or neuropathic pain.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: December 15, 2015
    Assignee: Takeda Pharmaceutical Company Limited
    Inventors: Takeshi Hondo, Keita Nakanishi, Tatsuya Niimi, Masaichi Warizaya, Ichiji Namatame, Katsuya Harada
  • Publication number: 20150126488
    Abstract: [Problem] On the basis of a cathepsin S inhibitory effect, an excellent agent for treating or preventing autoimmune disease, allergic disease, graft rejection of an organ, bone marrow or tissue, systemic lupus erythematosus, or the like is provided. [Means for Solution] It was found that a nitrogen-containing bicyclic heterocyclic compound has the excellent cathepsin S inhibitory effect, thereby completing the invention. The compound of the present invention has the cathepsin S inhibitory effect, and can be used as an agent for preventing and/or treating autoimmune disease, allergic disease, graft rejection of an organ, bone marrow or tissue, systemic lupus erythematosus, or the like.
    Type: Application
    Filed: April 17, 2013
    Publication date: May 7, 2015
    Applicant: ASTELLAS PHARMA INC
    Inventors: Yutaka Nakajima, Sunao Imada, Yuji Takasuna, Naohiro Aoyama, Takahiro Nigawara, Shohei Shirakami, Fumiyuki Shirai, Junji Sato, Keita Nakanishi, Kaori Kubo
  • Publication number: 20140336165
    Abstract: Provided is a compound having a D-amino acid oxidase (DAAO) inhibitory action, and useful as, for example, a prophylaxis and/or therapeutic agent for schizophrenia or neuropathic pain. The present inventors have studied a compound that inhibits DAAO, and confirm that a dihydroxy aromatic heterocyclic compound has a DAAO inhibitory action, and completed the present invention. That is, the dihydroxy aromatic heterocyclic compound of the present invention has a good DAAO inhibitory action, and can be used as a prophylaxis and/or therapeutic agent for, for example, schizophrenia or neuropathic pain.
    Type: Application
    Filed: November 14, 2012
    Publication date: November 13, 2014
    Inventors: Takeshi Hondo, Keita Nakanishi, Tatsuya Niimi, Masaichi Warizaya, Ichiji Namatame, Katsuya Harada
  • Publication number: 20130257211
    Abstract: A rotor unit includes a plurality of rotating bodies arranged along a central axis. Each of the plurality of rotating bodies includes an annular rotor core surrounding the central axis, a plurality of magnets arranged in the circumferential direction around the rotor core, and a holder arranged to hold the magnets. Further, the holder includes a plurality of partitioning portions each axially extending between respective ones of the plurality of magnets. The axial dimension of the plurality of partitioning portions is longer than the axial dimension of the respective ones of the plurality of magnets which are held by the plurality of partitioning portions. Further, the plurality of rotating bodies is disposed in a state where the circumferential positions of the plurality of magnets are out of alignment.
    Type: Application
    Filed: April 2, 2012
    Publication date: October 3, 2013
    Applicant: NIDEC CORPORATION
    Inventors: Hidehiro Haga, Keita Nakanishi, Takayuki Migita, Masato Aono
  • Patent number: 8367702
    Abstract: As a result of extensive studies on NAD(P)H oxidase inhibitors, the present inventors found that a quinolone derivative having, at the 2-position, an alkyl group substituted with a heteroatom or the like has an excellent NAD(P)H oxidase inhibitory activity, and accomplished the present invention. The compound of the present invention has a reactive oxygen species production inhibitory activity based on the NAD(P)H oxidase inhibitory activity, and therefore can be used as an agent for preventing and/or treating diabetes, impaired glucose tolerance, hyperlipidemia, fatty liver, diabetic complications and the like.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: February 5, 2013
    Assignee: Astellas Pharma Inc.
    Inventors: Kenichi Onda, Kenichiro Imamura, Fumie Sato, Hiroyuki Moritomo, Yasuharu Urano, Yuki Sawada, Naoki Ishibashi, Keita Nakanishi, Kazuhiro Yokoyama, Shigetada Furukawa, Kazuhiro Momose
  • Patent number: 8198464
    Abstract: The present invention provides a method for producing a C-glycoside derivative, which can produce the C-glycoside derivative at a high yield and at a low cost, which conforms to environmental protection, and which is applicable industrially. The C-glycoside derivative is useful for treating and preventing diabetes such as insulin-dependent diabetes (type 1 diabetes), non-insulin-dependent diabetes (type 2 diabetes) and the like and various diabetes-related diseases including insulin-resistant diseases and obesity.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: June 12, 2012
    Assignees: Astellas Pharma Inc., Kotobuki Pharmaceutical Co., Ltd.
    Inventors: Kousuke Komenoi, Atsushi Nakamura, Makoto Kasai, Masakazu Imamura, Ryota Shiraki, Keita Nakanishi
  • Patent number: 8097592
    Abstract: A cocrystal of (1S)-1,5-anhydro-1-[3-(1-benzothien-2-ylmethyl)-4-fluorophenyl]-D-glucitol and L-proline. It is a cocrystal of known compound A, which has a constant quality, is superior in storage stability, has no moisture absorptivity, and is suitable as a crystal of a drug substance used for preparing pharmaceuticals.
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: January 17, 2012
    Assignees: Astellas Pharma Inc., Kotobuki Pharmaceutical Co. Ltd.
    Inventors: Masakazu Imamura, Keita Nakanishi, Ryota Shiraki, Kenichi Onda, Daisuke Sasuga, Masamichi Yuda
  • Publication number: 20110018376
    Abstract: A technique and structure for establishing a sufficient electrical connection between an armature and a power supply of a motor even for use in severe working environments through at least one busbar is such that each of the at least one busbar is connected a conductor wire arranged to supply a drive current to the armature of the motor. The structure includes a terminal plate having a through hole defined therein to allow the conductor wire to pass therethrough, and a terminal wall arranged to rise above the terminal plate from a periphery of the through hole.
    Type: Application
    Filed: March 12, 2009
    Publication date: January 27, 2011
    Applicant: NIDEC CORPORATION
    Inventors: Nakaba Kataoka, Keita Nakanishi
  • Patent number: 7868504
    Abstract: A resolver rotor for a variable reluctance resolver includes a plurality of axially stacked rotor pieces. The rotor pieces are jointly fitted into one body. In the fitting of the rotor pieces, deformed portions are provided between a center of the radial thickness of the resolver rotor and a side surface thereof which is opposite to a stator-side surface thereof. The number of deformed portions is the same as that of projecting poles of the resolver rotor. The deformed portions are arranged at circumferential positions of peaks of the respective projecting poles. At those positions, concave portions are provided on the side surface to receive deformations caused by fitting the rotor pieces together. Thus, the stator-side surface of the resolver rotor is less affected by fitting of the rotor pieces together, preventing a reduction in the detection accuracy of the resolver.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: January 11, 2011
    Assignee: Nidec Corporation
    Inventors: Nakaba Kataoka, Keita Nakanishi
  • Patent number: 7830051
    Abstract: A resolver includes a terminal block having a plurality of terminals integrally formed therein. Each of the terminals has a conductive wire connecting portion arranged to allow a conductive wire of a resolver stator to be fixed thereto and a lead wire connecting portion which allows a lead wire to be connected thereto. Ultrasonic welding is carried out to join the lead wire connecting portion and a connecting end of the lead wire.
    Type: Grant
    Filed: January 10, 2008
    Date of Patent: November 9, 2010
    Assignee: Nidec Corporation
    Inventors: Nakaba Kataoka, Takahiro Hattori, Keita Nakanishi