Patents by Inventor Masahiro Hanazawa

Masahiro Hanazawa 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).

  • Antenna device
    Patent number: 8836595
    Abstract: An antenna device that radiates or receives a radio wave includes: a first wire line; a second wire line that is parallel to the first wire line; a power feeding/receiving point that is provided at proximal portions of the first wire line and second wire line; and a terminal resistance that is provided at distal end portions of the first wire line and second wire line.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: September 16, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masahiro Hanazawa, Nobuhiro Ide
  • Antenna device
    Patent number: 8836603
    Abstract: An antenna device includes: a plurality of loop metal wires that form loops out of metal wires and that are radially arranged around a center line; a power feeding portion that feeds power to the loop metal wires or a power receiving portion that receives power from the loop metal wires and that is provided on the center line; and a variable impedance element that is inserted in each of the loop metal wires.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: September 16, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masahiro Hanazawa, Nobuhiro Ide
  • Antenna devices
    Patent number: 8537071
    Abstract: An antenna device is provided with a first connecting electrode, a first tunnel diode, a first antenna member and a fixed electrode. The first connecting electrode is configured to be connected to a fixed potential via a load. The first tunnel diode has a pair of electrodes. One of the electrodes of the first tunnel diode is connected to the first connecting electrode, and the other electrode of the first tunnel diode is connected to the first antenna member. The first antenna member has a conductive property and includes a first portion and a second portion. The first portion of the first antenna member is connected to the other electrode of the first tunnel diode. The fixed electrode is connected to the second portion of the first antenna member. The fixed electrode is configured to be connected to the fixed potential.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: September 17, 2013
    Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Toyoda Gosei Co., Ltd.
    Inventors: Tadashi Ito, Atsuto Okamoto, Tomoyoshi Motohiro, Tsuyoshi Nomura, Masahiro Hanazawa, Toshiyasu Ito, Takeshi Miyazaki, Yukihisa Ueno
  • ANTENNA DEVICE
    Publication number: 20120038538
    Abstract: An antenna device includes: a plurality of loop metal wires that form loops out of metal wires and that are radially arranged around a center line; a power feeding portion that feeds power to the loop metal wires or a power receiving portion that receives power from the loop metal wires and that is provided on the center line; and a variable impedance element that is inserted in each of the loop metal wires.
    Type: Application
    Filed: April 1, 2010
    Publication date: February 16, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masahiro Hanazawa, Nobuhiro Ide
  • ANTENNA DEVICE
    Publication number: 20120026060
    Abstract: An antenna device that radiates or receives a radio wave includes: a first wire line: a second wire line that is parallel to the first wire line; a power feeding/receiving point that is provided at proximal portions of the first wire line and second wire line; and a terminal resistance that is provided at distal end portions of the first wire line and second wire line.
    Type: Application
    Filed: April 1, 2010
    Publication date: February 2, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masahiro Hanazawa, Nobuhiro Ide
  • Antenna devices
    Publication number: 20100244656
    Abstract: An antenna device is provided with a first connecting electrode, a first tunnel diode, a first antenna member and a fixed electrode. The first connecting electrode is configured to be connected to a fixed potential via a load. The first tunnel diode has a pair of electrodes. One of the electrodes of the first tunnel diode is connected to the first connecting electrode, and the other electrode of the first tunnel diode is connected to the first antenna member. The first antenna member has a conductive property and includes a first portion and a second portion. The first portion of the first antenna member is connected to the other electrode of the first tunnel diode. The fixed electrode is connected to the second portion of the first antenna member. The fixed electrode is configured to be connected to the fixed potential.
    Type: Application
    Filed: March 23, 2010
    Publication date: September 30, 2010
    Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYODA GOSEI CO., LTD.
    Inventors: Tadashi Ito, Atsuto Okamoto, Tomoyoshi Motohiro, Tsuyoshi Nomura, Masahiro Hanazawa, Toshiyasu Ito, Takeshi Miyazaki, Yukihisa Ueno