Patents by Inventor Takuma Ikeda

Takuma Ikeda 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: 20240177896
    Abstract: A ferrite sintered magnet represented by A1?xRx(Fe12?yCoy)zO19 in terms of atomic number ratio. A is at least one selected from a group made of Sr, Ba and Pb. R is La only or La and at least one selected from a group made of Bi and rare earth elements. 0.14?x?0.22, 11.60?(12?y)×z?11.99, and 0.13?y×z?0.17 are satisfied. 0.500?Mc?0.710 is satisfied in which Mc is CaO content in mass % converted from a content of Ca included in the ferrite sintered magnet. 0.410?Ms?0.485 is satisfied in which Ms is SiO2 content in mass % converted from a content of Si included in the ferrite sintered magnet.
    Type: Application
    Filed: March 24, 2022
    Publication date: May 30, 2024
    Applicant: TDK CORPORATION
    Inventors: Shogo MUROYA, Yoshitaka MURAKAWA, Hiroyuki MORITA, Masanori IKEDA, Takuma ABE
  • Publication number: 20240162819
    Abstract: A voltage transformer includes a magnetic coupling interleaved chopper circuit and a control unit configured to control the magnetic coupling interleaved chopper circuit. The control unit includes a switching frequency setting unit configured to set a switching frequency of the magnetic coupling interleaved chopper circuit on the basis of a state quantity indicating an operation state of the magnetic coupling interleaved chopper circuit and is configured to generate a voltage-transformation gate signal of the switching frequency set by the switching frequency setting unit and to output the generated voltage-transformation gate signal to the magnetic coupling interleaved chopper circuit.
    Type: Application
    Filed: December 9, 2021
    Publication date: May 16, 2024
    Inventors: Kazunari KUROKAWA, Satoshi HASHINO, Takuma KATO, Koji IKEDA
  • Publication number: 20240136318
    Abstract: A semiconductor device includes a semiconductor element having an Ni—V electrode and a conductor, the semiconductor element and the conductor being bonded via Sn-based lead-free solder. In the semiconductor device, an Sn—V compound layer and an (Ni, Cu)3Sn4 compound layer adjacent to the Sn—V compound are formed adjacent to an interface between the semiconductor element and the Sn-based lead-free solder. A manufacturing method for a semiconductor device according to the present invention includes: causing the Sn-based lead-free solder and the Ni—V electrode to react with each other to form an Sn—V layer and an (Ni, Cu)3Sn4 compound layer; and following formation of the Sn—V layer, leaving an unreacted layer of the Ni—V electrode, the unreacted layer having not reacted with the Sn-based lead-free solder, intact.
    Type: Application
    Filed: February 21, 2022
    Publication date: April 25, 2024
    Inventors: Osamu IKEDA, Naoki SAKURAI, Takayuki OSHIMA, Takuma HAKUTO
  • Patent number: 11616533
    Abstract: A radio power transmission system and a radio power transmission method are provided. The radio power transmission system includes a first radio device and a second radio device including a control signal generator and an antenna. The control signal generator generates a control signal for synchronizing frequencies and phases of power waves, based on signals indicating reception intensities of the power waves in a receiving device receiving the power waves. The antenna transmits the control signal to a plurality of the first radio devices. In the radio power transmission system, the plurality of first radio devices radiate, toward the receiving device, the power waves having the frequencies and phases set to a predetermined value based on the control signal.
    Type: Grant
    Filed: July 26, 2021
    Date of Patent: March 28, 2023
    Assignee: PANASONIC HOLDINGS CORPORATION
    Inventors: Shoichi Kajiwara, Hiroyuki Tani, Takuma Ikeda, Yuki Tanaka
  • Patent number: 11373478
    Abstract: A game machine that can discriminate between two states of an occupied state and an unoccupied state includes a credit function. The game machine includes the credit function configured to determine presence or absence of a credit and a timer part configured to measure a lapse of time, and transitions to the occupied state in which a game is determined to be interrupted or the unoccupied state in which the game machine is determined to be idle according to a determination of the presence or absence of the credit in the credit function when the timer part measures a lapse of a first time.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: June 28, 2022
    Assignee: Omron Corporation
    Inventors: Takuma Ikeda, Hiroyuki Onitsuka, Takahiro Ono, Masaaki Sumi
  • Patent number: 11327216
    Abstract: A display device according to one or more embodiments may include a lightguide plate comprising a transparent part, and an incident surface, the lightguide plate configured to display at least one pattern; and a light source facing the incident surface. The lightguide plate may include a plurality of prisms on a surface of the lightguide plate, the plurality of prisms being arranged along the at least one pattern to reflect light emitted from the light source and entering the lightguide plate through the incident surface out of the lightguide plate through an emission surface of the lightguide plate, and a transparent protective layer covering at least a part of the emission surface, the protective layer having a smaller refractive index than the lightguide plate.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: May 10, 2022
    Assignee: OMRON Corporation
    Inventors: Shogo Ikeda, Junya Fujita, Masanori Mori, Mitsuru Okuda, Takuma Ikeda
  • Publication number: 20220038137
    Abstract: A radio power transmission system and a radio power transmission method are provided. The radio power transmission system includes a first radio device and a second radio device including a control signal generator and an antenna. The control signal generator generates a control signal for synchronizing frequencies and phases of power waves, based on signals indicating reception intensities of the power waves in a receiving device receiving the power waves. The antenna transmits the control signal to a plurality of the first radio devices. In the radio power transmission system, the plurality of first radio devices radiate, toward the receiving device, the power waves having the frequencies and phases set to a predetermined value based on the control signal.
    Type: Application
    Filed: July 26, 2021
    Publication date: February 3, 2022
    Inventors: Shoichi KAJIWARA, Hiroyuki TANI, Takuma IKEDA, Yuki TANAKA
  • Patent number: 11224357
    Abstract: Provided is a living body information identification system that can identify position information of a living body (a person) and state information about a state of the living body without attaching a wireless device or a sensor on a human body. The living body information identification system includes a transceiver configured to transmit radio waves and wirelessly receive a signal, and sensor modules configured to receive the radio waves, convert the received radio waves into power, and use the power as a power supply to transmit own unique ID information to the transceiver. The sensor modules receive the radio waves from the transceiver, convert the received radio waves into power, and use the power as a power supply to transmit state information about a state of the living body to the transceiver. The transceiver identifies the living body based on the ID information and the state information.
    Type: Grant
    Filed: February 17, 2020
    Date of Patent: January 18, 2022
    Assignee: PANASONIC CORPORATION
    Inventors: Takuma Ikeda, Hiroyuki Tani
  • Publication number: 20210378536
    Abstract: Provided is a pulse detection apparatus. The apparatus includes: a pulse wave detector that detects a pulse wave, and outputs a pulse wave signal indicating the pulse wave that has been detected; a threshold value setting circuit that sets a threshold value that changes with time in accordance with an amplitude of the pulse wave signal; and a comparator that compares the pulse wave signal with the threshold value, and outputs, as information indicating a pulse, the pulse wave signal exceeding the threshold value.
    Type: Application
    Filed: June 1, 2021
    Publication date: December 9, 2021
    Inventors: Takuma IKEDA, Yuki TANAKA, Hiroyuki TANI
  • Publication number: 20210149103
    Abstract: A display device according to one or more embodiments may include a lightguide plate comprising a transparent part, and an incident surface, the lightguide plate configured to display at least one pattern; and a light source facing the incident surface. The lightguide plate may include a plurality of prisms on a surface of the lightguide plate, the plurality of prisms being arranged along the at least one pattern to reflect light emitted from the light source and entering the lightguide plate through the incident surface out of the lightguide plate through an emission surface of the lightguide plate, and a transparent protective layer covering at least a part of the emission surface, the protective layer having a smaller refractive index than the lightguide plate.
    Type: Application
    Filed: October 15, 2020
    Publication date: May 20, 2021
    Applicant: OMRON Corporation
    Inventors: Shogo IKEDA, Junya FUJITA, Masanori MORI, Mitsuru OKUDA, Takuma IKEDA
  • Publication number: 20200297242
    Abstract: Provided is a living body information identification system that can identify position information of a living body (a person) and state information about a state of the living body without attaching a wireless device or a sensor on a human body. The living body information identification system includes a transceiver configured to transmit radio waves and wirelessly receive a signal, and sensor modules configured to receive the radio waves, convert the received radio waves into power, and use the power as a power supply to transmit own unique ID information to the transceiver. The sensor modules receive the radio waves from the transceiver, convert the received radio waves into power, and use the power as a power supply to transmit state information about a state of the living body to the transceiver. The transceiver identifies the living body based on the ID information and the state information.
    Type: Application
    Filed: February 17, 2020
    Publication date: September 24, 2020
    Inventors: TAKUMA IKEDA, HIROYUKI TANI
  • Publication number: 20200296549
    Abstract: A moving body state identification system acquires identified information of a moving body by using a small terminal that does not need to charge or replace a battery. The moving body state identification system includes a transceiver that transmits radio waves and wirelessly receives a signal, ID tags that receive the radio waves, convert the received radio waves into power, and use the power as a power supply to transmit unique ID information to the transceiver, and a state information transmitter that is attached to a moving body, receives the radio waves, converts the received radio waves into power, and uses the power as a power supply to transmit state information about a state of the moving body to the transceiver. The transceiver identifies the moving body based on the ID information and the state information.
    Type: Application
    Filed: February 17, 2020
    Publication date: September 17, 2020
    Inventors: HIROYUKI TANI, TAKUMA IKEDA
  • Patent number: 10698649
    Abstract: An operation switch unit attached to a game machine includes a spin button that receives an input operation of an operator, an input detector that detects that the input operation of the operator is performed, and a controller that controls a directional speaker such that the directional speaker emits a directional sound, which does not spread uniformly but has directionality, to the operator as a notification that an operation input is performed based on a detection signal from the input detector.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: June 30, 2020
    Assignee: Omron Corporation
    Inventors: Takuma Ikeda, Hiroyuki Onitsuka, Takahiro Ono, Masaaki Sumi
  • Publication number: 20190122493
    Abstract: A game machine that can discriminate between two states of an occupied state and an unoccupied state includes a credit function. The game machine includes the credit function configured to determine presence or absence of a credit and a timer part configured to measure a lapse of time, and transitions to the occupied state in which a game is determined to be interrupted or the unoccupied state in which the game machine is determined to be idle according to a determination of the presence or absence of the credit in the credit function when the timer part measures a lapse of a first time.
    Type: Application
    Filed: September 21, 2018
    Publication date: April 25, 2019
    Applicant: OMRON Corporation
    Inventors: Takuma Ikeda, Hiroyuki Onitsuka, Takahiro Ono, Masaaki Sumi
  • Publication number: 20190114872
    Abstract: An operation switch unit attached to a game machine includes a spin button that receives an input operation of an operator, an input detector that detects that the input operation of the operator is performed, and a controller that controls a directional speaker such that the directional speaker emits a directional sound, which does not spread uniformly but has directionality, to the operator as a notification that an operation input is performed based on a detection signal from the input detector.
    Type: Application
    Filed: September 21, 2018
    Publication date: April 18, 2019
    Applicant: OMRON Corporation
    Inventors: Takuma Ikeda, Hiroyuki Onitsuka, Takahiro Ono, Masaaki Sumi
  • Patent number: 9163051
    Abstract: The present invention provides a process for preparing a spiroketal derivative, via an intermediate represented by Formula (VI): wherein variable groups and numbers are as defined in the specification, which can be produced from dihalobenzene derivatives in one pot reaction.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: October 20, 2015
    Assignee: CHUGAI SEIYAKU KABUSHIKI KAISHA
    Inventors: Masatoshi Murakata, Takuma Ikeda, Nobuaki Kimura, Akira Kawase, Masahiro Nagase, Keisuke Yamamoto, Noriyuki Takata, Shinichi Yoshizaki, Koji Takano
  • Patent number: 9133174
    Abstract: The present invention provides a novel method for producing a compound represented by general formula (VII) below or a pharmaceutically acceptable salt thereof or a synthetic intermediate thereof: wherein R2 represents a hydrogen atom or a halogen atom, Rc represents a C1-6 alkyl group, X represents a group selected from a heteroaryl group etc., R11 represents an atom or group selected from a hydrogen atom, a halogen atom, a C1-6 alkyl group, etc., R16 and R17 each independently represent an atom or group selected from a hydrogen atom, a C1-6 alkyl group, etc., and R15 represents a hydrogen atom or a C1-6 alkyl group.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: September 15, 2015
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Masatoshi Murakata, Takuma Ikeda, Takahiro Ichige
  • Publication number: 20140213786
    Abstract: The present invention provides a novel method for producing a compound represented by general formula (VII) below or a pharmaceutically acceptable salt thereof or a synthetic intermediate thereof: wherein R2 represents a hydrogen atom or a halogen atom, Rc represents a C1-6 alkyl group, X represents a group selected from a heteroaryl group etc., R11 represents an atom or group selected from a hydrogen atom, a halogen atom, a C1-6 alkyl group, etc., R16 and R17 each independently represent an atom or group selected from a hydrogen atom, a C1-6 alkyl group, etc., and R15 represents a hydrogen atom or a C1-6 alkyl group.
    Type: Application
    Filed: September 5, 2012
    Publication date: July 31, 2014
    Applicant: CHUGAI SEIYAKU KABUSHIKI KAISHA
    Inventors: Masatoshi Murakata, Takuma Ikeda, Takahiro Ichige
  • Publication number: 20140024817
    Abstract: The present invention provides a process for preparing a spiroketal derivative, via an intermediate represented by Formula (VI): wherein variable groups and numbers are as defined in the specification, which can be produced from dihalobenzene derivatives in one pot reaction.
    Type: Application
    Filed: September 24, 2013
    Publication date: January 23, 2014
    Applicant: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Masatoshi MURAKATA, Takuma IKEDA, Nobuaki KIMURA, Akira KAWASE, Masahiro NAGASE, Keisuke YAMAMOTO
  • Patent number: 8569520
    Abstract: The present invention provides a process for preparing a spiroketal derivative, via an intermediate represented by Formula (VI): wherein variable groups and numbers are as defined in the specification, which can be produced from dihalobenzene derivatives in one pot reaction.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: October 29, 2013
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Masatoshi Murakata, Takuma Ikeda, Nobuaki Kimura, Akira Kawase, Masahiro Nagase, Keisuke Yamamoto