Patents by Inventor Kota NAGASAO

Kota NAGASAO 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).

  • Patent number: 11189478
    Abstract: Four rod electrodes (50a to 50d) for separating ions according to a mass-to-charge ratio are held by a rod holder (51). The rod holder (51) is placed on a metal holder sustaining stand (52) provided on a bottom surface of a vacuum housing (1), and is fixed while being pressed by a fixation band (53) fixed to the holder sustaining stand (52) with screws (56). The fixation band (53) has a coating film layer (532) formed by a black nickel plating process on the entire surface of a main member (531) made from phosphor bronze. The coating film layer (532) has high emissivity, and thus heat transferred from the rod holder (51) to the fixation band (53) is efficiently radiated into the vacuum housing (1). Therefore, heat generated in the rod holder (51) due to dielectric loss is efficiently dissipated, and deformation of the rod holder can be reduced.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: November 30, 2021
    Assignee: SHIMADZU CORPORATION
    Inventors: Manabu Ueda, Kota Nagasao
  • Patent number: 11139158
    Abstract: Four rod electrodes (50a to 50d) for separating ions according to a mass-to-charge ratio are held by a rod holder (51). The rod holder (51) is placed on a metal holder sustaining stand (52) provided on a bottom surface of a vacuum housing (1), and is fixed while being pressed by a fixation band (53) fixed to the holder sustaining stand (52) with screws (56). The fixation band (53) is made from phosphor bronze having higher thermal conductivity than thermal conductivity of stainless steel or the like. Therefore, heat generated in the rod holder (51) due to dielectric loss is not only directly transmitted to the holder sustaining stand (52), but also efficiently transmitted to the holder sustaining stand (52) through the fixation band (53). With this, the heat of the rod holder (51) is efficiently dissipated, and non-uniformity of temperature of the rod holder can be reduced.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: October 5, 2021
    Assignee: SHIMADZU CORPORATION
    Inventors: Manabu Ueda, Kota Nagasao
  • Patent number: 11107668
    Abstract: Four rod electrodes (50a to 50d) for separating ions according to a mass-to-charge ratio are held by a rod holder (51). The rod holder (51) is placed on a metal holder sustaining stand (52) provided on a bottom surface of a vacuum housing (1), and is fixed while being pressed by a fixation band (53) fixed to the holder sustaining stand (52) with screws (56). A heat release layer (55) made from heat dissipation silicone or the like is inserted between the fixation band (53) and the rod holder (51) and between the fixation band (53) and the holder sustaining stand (52). Therefore, heat generated in the rod holder (51) due to dielectric loss is not only directly transmitted to the holder sustaining stand (52), but also efficiently transmitted to the holder sustaining stand (52) through the fixation band (53).
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: August 31, 2021
    Assignee: SHIMADZU CORPORATION
    Inventors: Manabu Ueda, Kota Nagasao
  • Patent number: 11043371
    Abstract: Four rod electrodes (50a to 50d) for separating ions according to a mass-to-charge ratio are held by two rod holders (51). The rod holders (51) are attached to metal holder sustaining stands (52) provided on a bottom surface of a vacuum housing (1). A coating film layer (10) is formed by a black nickel plating process on parts of wall surfaces in the vacuum housing (1), an inlet lens (4), and an outlet lens (6), the parts facing a quadrupole mass filter unit (5). The emissivity of the coating film layer (10) is higher than that of Al or the like, and thus radiant heat from the quadrupole mass filter unit (5) is efficiently absorbed by the coating film layer (10). Therefore, heat generated in the rod holders (51) due to dielectric loss is efficiently dissipated, and deformation of the rod holders can be reduced.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: June 22, 2021
    Assignee: SHIMADZU CORPORATION
    Inventors: Manabu Ueda, Kota Nagasao
  • Publication number: 20210175066
    Abstract: Four rod electrodes (50a to 50d) for separating ions according to a mass-to-charge ratio are held by a rod holder (51). The rod holder (51) is placed on a metal holder sustaining stand (52) provided on a bottom surface of a vacuum housing (1), and is fixed while being pressed by a fixation band (53) fixed to the holder sustaining stand (52) with screws (56). The fixation band (53) is made from phosphor bronze having higher thermal conductivity than thermal conductivity of stainless steel or the like. Therefore, heat generated in the rod holder (51) due to dielectric loss is not only directly transmitted to the holder sustaining stand (52), but also efficiently transmitted to the holder sustaining stand (52) through the fixation band (53). With this, the heat of the rod holder (51) is efficiently dissipated, and non-uniformity of temperature of the rod holder can be reduced.
    Type: Application
    Filed: February 7, 2018
    Publication date: June 10, 2021
    Applicant: SHIMADZU CORPORATION
    Inventors: Manabu UEDA, Kota NAGASAO
  • Publication number: 20200395207
    Abstract: Four rod electrodes (50a to 50d) for separating ions according to a mass-to-charge ratio are held by a rod holder (51). The rod holder (51) is placed on a metal holder sustaining stand (52) provided on a bottom surface of a vacuum housing (1), and is fixed while being pressed by a fixation band (53) fixed to the holder sustaining stand (52) with screws (56). The fixation band (53) has a coating film layer (532) formed by a black nickel plating process on the entire surface of a main member (531) made from phosphor bronze. The coating film layer (532) has high emissivity, and thus heat transferred from the rod holder (51) to the fixation band (53) is efficiently radiated into the vacuum housing (1). Therefore, heat generated in the rod holder (51) due to dielectric loss is efficiently dissipated, and deformation of the rod holder can be reduced.
    Type: Application
    Filed: February 7, 2018
    Publication date: December 17, 2020
    Applicant: SHIMADZU CORPORATION
    Inventors: Manabu UEDA, Kota NAGASAO
  • Publication number: 20200395206
    Abstract: Four rod electrodes (50a to 50d) for separating ions according to a mass-to-charge ratio are held by two rod holders (51). The rod holders (51) are attached to metal holder sustaining stands (52) provided on a bottom surface of a vacuum housing (1). A coating film layer (10) is formed by a black nickel plating process on parts of wall surfaces in the vacuum housing (1), an inlet lens (4), and an outlet lens (6), the parts facing a quadrupole mass filter unit (5). The emissivity of the coating film layer (10) is higher than that of Al or the like, and thus radiant heat from the quadrupole mass filter unit (5) is efficiently absorbed by the coating film layer (10). Therefore, heat generated in the rod holders (51) due to dielectric loss is efficiently dissipated, and deformation of the rod holders can be reduced.
    Type: Application
    Filed: February 7, 2018
    Publication date: December 17, 2020
    Applicant: SHIMADZU CORPORATION
    Inventors: Manabu UEDA, Kota NAGASAO
  • Publication number: 20200381236
    Abstract: Four rod electrodes (50a to 50d) for separating ions according to a mass-to-charge ratio are held by a rod holder (51). The rod holder (51) is placed on a metal holder sustaining stand (52) provided on a bottom surface of a vacuum housing (1), and is fixed while being pressed by a fixation band (53) fixed to the holder sustaining stand (52) with screws (56). A heat release layer (55) made from heat dissipation silicone or the like is inserted between the fixation band (53) and the rod holder (51) and between the fixation band (53) and the holder sustaining stand (52). Therefore, heat generated in the rod holder (51) due to dielectric loss is not only directly transmitted to the holder sustaining stand (52), but also efficiently transmitted to the holder sustaining stand (52) through the fixation band (53).
    Type: Application
    Filed: February 7, 2018
    Publication date: December 3, 2020
    Applicant: SHIMADZU CORPORATION
    Inventors: Manabu UEDA, Kota NAGASAO