Patents by Inventor Kazuya Ishizawa

Kazuya Ishizawa 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).

  • Neutron position detector
    Patent number: 11822027
    Abstract: A neutron position detector according to an embodiment includes a tubular enclosure used as a cathode, an anode located at an axial center inside the enclosure, and a gas that includes a 3He gas and an additive gas and is sealed inside the enclosure. The additive gas includes nitrogen as a quenching gas, and argon as a gas that reduces the ranges of reaction products as neutron and 3He gas.
    Type: Grant
    Filed: October 3, 2022
    Date of Patent: November 21, 2023
    Assignee: CANON ELECTRON TUBES & DEVICES CO., LTD.
    Inventors: Kazuya Ishizawa, Noriyuki Hikida
  • NEUTRON POSITION DETECTOR
    Publication number: 20230110535
    Abstract: A neutron position detector according to an embodiment includes a tubular enclosure used as a cathode, an anode located at an axial center inside the enclosure, and a gas that includes a 3He gas and an additive gas and is sealed inside the enclosure. The additive gas includes nitrogen as a quenching gas, and argon as a gas that reduces the ranges of reaction products as neutron and 3He gas.
    Type: Application
    Filed: October 3, 2022
    Publication date: April 13, 2023
    Applicant: CANON ELECTRON TUBES & DEVICES CO., LTD.
    Inventors: Kazuya ISHIZAWA, Noriyuki HIKIDA
  • NEUTRON POSITION DETECTOR
    Publication number: 20180329088
    Abstract: According to one embodiment, a neutron position detector includes a gas including a 3He gas and an additive gas. The gas has a gas composition being set so that a total of ranges of a proton and a tritium in the gas is 2.0 to 2.7 mm. The partial pressures are in an extent surrounded by a first gas composition point of the 3He gas of 5 atm and the additive gas of 1.6 atm, a second gas composition point of the 3He gas of 5 atm and the additive gas of 2.3 atm, a third gas composition point of the 3He gas of 20 atm and the additive gas of 0.6 atm, and a fourth gas composition point of the 3He gas of 20 atm and the additive gas of 1.3 atm.
    Type: Application
    Filed: February 26, 2018
    Publication date: November 15, 2018
    Applicant: Toshiba Electron Tubes & Devices, Co., Ltd.
    Inventors: Noriyuki HIKIDA, Kiyofumi OOKAWA, Kazuya ISHIZAWA
  • Neutron position detector
    Patent number: 10126441
    Abstract: According to one embodiment, a neutron position detector includes a gas including a 3He gas and an additive gas. The gas has a gas composition being set so that a total of ranges of a proton and a tritium in the gas is 2.0 to 2.7 mm. The partial pressures are in an extent surrounded by a first gas composition point of the 3He gas of 5 atm and the additive gas of 1.6 atm, a second gas composition point of the 3He gas of 5 atm and the additive gas of 2.3 atm, a third gas composition point of the 3He gas of 20 atm and the additive gas of 0.6 atm, and a fourth gas composition point of the 3He gas of 20 atm and the additive gas of 1.3 atm.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: November 13, 2018
    Assignee: Toshiba Electron Tubes & Devices Co., Ltd.
    Inventors: Noriyuki Hikida, Kiyofumi Ookawa, Kazuya Ishizawa
  • PROPORTIONAL COUNTER TUBE
    Publication number: 20090159809
    Abstract: The gas filled in an envelope contains nitrogen and hydrogen. The nitrogen used as a supplementary gas is not polymerized even when radiation is applied to it, and serves to achieve higher resolution than in the case where carbon dioxide is used as the supplementary gas. The hydrogen can reduce the change of gas gain.
    Type: Application
    Filed: March 13, 2009
    Publication date: June 25, 2009
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Electron Tubes & Devices Co., Ltd.
    Inventors: NORIYUKI HIKIDA, Kazuya Ishizawa, Eiji Seki