Patents by Inventor Itsuo Kodera

Itsuo Kodera 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).

  • Superconducting magnet and regenerative refrigerator for the magnet
    Patent number: 5638685
    Abstract: Superconducting magnet and regenerative refrigerator can be reduced in size of the apparatus and is capable of reducing the evaporating amount of liquid helium. A coil portion second thermal shield 17a and a coil portion thermal shield 8a are disposed so as to enclose a coil portion helium tank 2a which contains superconducting coil 1. Further, a helium portion second thermal shield 17b and a helium reservoir portion thermal shield 8b are disposed so as to enclose a helium reservoir tank 2b which stores liquid helium 3. A coil portion second thermal shield 17a and a coil portion thermal shield 8a are cooled by a coil portion 2-stage type Gifford-McMahon cycle refrigerator 50a while a helium portion second thermal shield 17b and a helium reservoir portion thermal shield 8b are cooled by a helium reservoir portion 2-stage type Gifford-McMahon cycle refrigerator 50b.
    Type: Grant
    Filed: April 5, 1996
    Date of Patent: June 17, 1997
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takashi Inaguchi, Itsuo Kodera, Akinori Ohara, Toshiyuki Amano, Takeo Kawaguchi
  • Superconducting magnet and regenerative refrigerator for the magnet
    Patent number: 5584184
    Abstract: Superconducting magnet and regenerative refrigerator can be reduced in size of the apparatus and is capable reducing the evaporating amount of liquid helium. A coil portion second thermal shield 17a and a coil portion thermal shield 8a are disposed so as to enclose a coil portion helium tank 2a which contains superconducting coil 1. Further, a helium portion second thermal shield 17b and a helium reservoir portion thermal shield 8b are disposed so as to enclose a helium reservoir tank 2b which stores liquid helium 3. A coil portion second thermal shield 17a and a coil portion thermal shield 8a are cooled by a coil portion 2-stage type Gifford-McMahon cycle refrigerator 50a while a helium portion second thermal shield 17b and a helium reservoir portion thermal shield 8b are cooled by a helium reservoir portion 2-stage type Gifford-McMahon cycle refrigerator 50b.
    Type: Grant
    Filed: April 12, 1995
    Date of Patent: December 17, 1996
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takashi Inaguchi, Itsuo Kodera, Akinori Ohara, Toshiyuki Amano, Takeo Kawaguchi
  • Ion removing device, ion removing method and electron accumulating ring having ion removing device
    Patent number: 5457361
    Abstract: An ion removing device includes an ion inducing electrode provided in a vacuum container in a deflection portion of an electron accumulating ring along an inner peripheral wall of the vacuum container, an ion removing electrode provided in the vacuum container near each of ports of the defection portion of the electron accumulating ring, and a power source for applying a voltage to both the ion inducing electrode and the ion removing electrodes. An ion removing method includes the steps of inducing ions trapped by a potential generated by an electron beam to ports of a deflection portion of an electron accumulating ring by forming an electric field in a vacuum container in the deflection portion, and removing the ions which have been inducted to the ports of the defection portion.
    Type: Grant
    Filed: February 9, 1993
    Date of Patent: October 10, 1995
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shuhei Nakata, Hirofumi Tanaka, Itsuo Kodera, Tetsuya Nakanishi