Patents by Inventor Naofumi Kosugi
Naofumi Kosugi 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).
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Patent number: 11949140Abstract: A pillbox-type RF window having an input/output window in a microwave tube, the pillbox-type RF window includes a disc-shaped member having a metallization layer formed on an outer peripheral portion of a disc-shaped ceramic body; a pair of ring-shaped members constituted by metal bodies having substantially the same outer diameters as the disc-shaped member, arranged to sandwich the disc-shaped member from both sides, and integrated with the outer peripheral portion of the disc-shaped member; a tube-shaped member constituted by a metal body having an inner diameter substantially equal to the outer diameters of the pair of ring-shaped members and the disc-shaped member, for holding the pair of metal components and the disc-shaped member on an inside thereof; and a restriction member for suppressing rotation between the ring-shaped members and the tube-shaped member.Type: GrantFiled: May 25, 2022Date of Patent: April 2, 2024Assignee: NEC Network and Sensor Systems, Ltd.Inventors: Naofumi Kosugi, Kenji Nakajima
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Publication number: 20220384926Abstract: A pillbox-type RF window having an input/output window in a microwave tube, the pillbox-type RF window includes a disc-shaped member having a metallization layer formed on an outer peripheral portion of a disc-shaped ceramic body; a pair of ring-shaped members constituted by metal bodies having substantially the same outer diameters as the disc-shaped member, arranged to sandwich the disc-shaped member from both sides, and integrated with the outer peripheral portion of the disc-shaped member; a tube-shaped member constituted by a metal body having an inner diameter substantially equal to the outer diameters of the pair of ring-shaped members and the disc-shaped member, for holding the pair of metal components and the disc-shaped member on an inside thereof; and a restriction member for suppressing rotation between the ring-shaped members and the tube-shaped member.Type: ApplicationFiled: May 25, 2022Publication date: December 1, 2022Applicant: NEC Network and Sensor Systems, Ltd.Inventors: Naofumi KOSUGI, Kenji NAKAJIMA
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Publication number: 20210319971Abstract: An X-ray generation apparatus includes an electron gun emitting an electron beam having a circular cross-sectional shape, a magnetic focusing lens located downstream of the electron gun and focusing the electron beam while rotating the electron beam around an axis along a first direction, a magnetic quadrupole lens located downstream of the magnetic focusing lens and deforming the cross-sectional shape of the electron beam into an elliptical shape having a major axis along a second direction orthogonal to the first direction and a minor axis along a third direction orthogonal to the first direction and the second direction, and a target located downstream of the magnetic quadrupole lens and emitting an X-ray in response to incidence of the electron beam.Type: ApplicationFiled: April 13, 2020Publication date: October 14, 2021Inventors: Shinya HATTORI, Ryosuke YABUSHITA, Naofumi KOSUGI
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Patent number: 11145481Abstract: An X-ray generation apparatus includes an electron gun emitting an electron beam having a circular cross-sectional shape, a magnetic focusing lens located downstream of the electron gun and focusing the electron beam while rotating the electron beam around an axis along a first direction, a magnetic quadrupole lens located downstream of the magnetic focusing lens and deforming the cross-sectional shape of the electron beam into an elliptical shape having a major axis along a second direction orthogonal to the first direction and a minor axis along a third direction orthogonal to the first direction and the second direction, and a target located downstream of the magnetic quadrupole lens and emitting an X-ray in response to incidence of the electron beam.Type: GrantFiled: April 13, 2020Date of Patent: October 12, 2021Inventors: Shinya Hattori, Ryosuke Yabushita, Naofumi Kosugi
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Patent number: 10718554Abstract: A manifold includes: a branch pipe including an inflow port and a plurality of outflow ports; and a partition wall that partitions an inside of the branch pipe into a side of the inflow port and a side of the plurality of outflow ports and includes: a plurality of through-holes that have a total opening area greater than an opening area of the inflow port; and a plurality of first facing portions that face the respective outflow ports.Type: GrantFiled: October 25, 2017Date of Patent: July 21, 2020Assignee: FUJITSU LIMITEDInventors: Keita Hirai, Tsuyoshi So, Naofumi Kosugi
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Patent number: 10342164Abstract: A rack mount-type information processing apparatus includes: a plurality of slots, into each of which an electronic device is inserted, a liquid-cooled element provided in a cooling target included in the electronic device, a liquid to cool the cooling target being circulated in the liquid-cooled element; a manifold pipe extending in a direction where the slots are arranged; and a plurality of connection pipes configured to interconnect the liquid-cooled element and the manifold pipe, and coupled in parallel to the manifold pipe at a portion of the manifold pipe which corresponds to at least one slot among the plurality of slots.Type: GrantFiled: October 5, 2017Date of Patent: July 2, 2019Assignee: FUJITSU LIMITEDInventors: Tsuyoshi So, Osamu Aizawa, Keita Hirai, Koji Nakagawa, Yoshinori Uzuka, Nobumitsu Aoki, Naofumi Kosugi
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Patent number: 10321609Abstract: A cooling system includes an immersion tank that includes a liquid coolant sealed therein, a housing that includes through-holes formed in a top portion and a bottom portion thereof, respectively, and disposed within the immersion tank, an electronic device disposed in the housing in a state of being immersed in the coolant, a coolant flow path formed between an inner surface of the immersion tank and an outer surface of the housing to couplet he through-hole in the top portion of the housing to the through-hole in the bottom portion of the housing so that the coolant flows therethrough, and a heat transfer member that transports heat of the coolant in the coolant flow path to an outside of the immersion tank.Type: GrantFiled: October 19, 2017Date of Patent: June 11, 2019Assignee: FUJITSU LIMITEDInventors: Keita Hirai, Tsuyoshi So, Naofumi Kosugi
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Publication number: 20190150321Abstract: A device for cooling electronic components includes: a main body including the electronic components; an air blower configured to introduce air into the main body; a heat exchanger configured to cool air introduced into the main body; an evaporator with which air discharged from the main body comes into contact. The device further includes a pump configured to draw up water generated by dew condensation in the heat exchanger and to supply the water to a top portion of the evaporator.Type: ApplicationFiled: November 5, 2018Publication date: May 16, 2019Applicant: FUJITSU LIMITEDInventors: Keita Hirai, Tsuyoshi So, Naofumi Kosugi
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Publication number: 20190094928Abstract: An information processing apparatus includes a plurality of processors, a manifold that collects refrigerant liquid discharged from the plurality of processors, a first pipe that is coupled to the manifold and discharges the refrigerant liquid collected in the manifold, a throttle portion that is disposed in the first pipe and forms a throttle hole penetrating in an axis direction of the first pipe inside the first pipe, and a narrow tube that extends from an inside upper portion of the manifold to inside of the first pipe and is inserted into the throttle hole.Type: ApplicationFiled: September 13, 2018Publication date: March 28, 2019Applicant: FUJITSU LIMITEDInventors: Keita Hirai, Tsuyoshi So, NAOFUMI KOSUGI
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Patent number: 10165706Abstract: A liquid immersion bath includes: a liquid immersion bath main body in which liquid coolant and an electronic device to be immersed in the coolant are placed; a coolant inlet and a coolant outlet provided to the liquid immersion bath main body; a coolant discharge port which floats on a liquid surface of the liquid coolant in the liquid immersion bath main body; and a hose which couples the coolant outlet and the coolant discharge port and bends in accordance with a movement of the coolant discharge port due to variation in a height of the liquid surface.Type: GrantFiled: May 23, 2017Date of Patent: December 25, 2018Assignee: FUJITSU LIMITEDInventors: Keita Hirai, Tsuyoshi So, Naofumi Kosugi
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Patent number: 10136562Abstract: An underwater data center includes an electronic device; a housing member that houses the electronic device and that is configured to be disposed under water; and a heat exchanger that is provided at the housing member and that is configured to discharge, into the water, heat discharged from the electronic device, with a face of the heat exchanger that discharges the heat making contact with the water, an opening being formed in a bottom face of the housing member and placing an inside of the housing member in communication with the water.Type: GrantFiled: July 3, 2017Date of Patent: November 20, 2018Assignee: FUJITSU LIMITEDInventors: Naofumi Kosugi, Susumu Takahashi, Kiyomasa Kamei
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Patent number: 10082851Abstract: A cooling apparatus includes an assembly including an electronic device and a potting material that covers a side portion and an upper portion of the electronic device, the assembly having a conical upper portion, and a cooling plate including a conical hole, into which the upper portion of the assembly is fitted, and a flow path, through which a coolant flows.Type: GrantFiled: July 12, 2017Date of Patent: September 25, 2018Assignee: FUJITSU LIMITEDInventors: Koichi Onodera, Naofumi Kosugi
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Patent number: 10080308Abstract: An immersion cooling apparatus includes: a refrigerant tank configured to store a non-boiling fluorine-based insulating refrigerant in which an electronic device is to be immersed; a circulation passage of the fluorine-based insulating refrigerant that is located between the refrigerant tank and a refrigerant cooling device; and a sealed pump that is arranged in the circulation passage, is configured to seal a rotor shaft with an impeller and a bearing portion for the rotor shaft in a sealed case while the rotor shaft and the bearing portion are immersed in the fluorine-based insulating refrigerant, and is configured to circulate the fluorine-based insulating refrigerant between the refrigerant tank and the refrigerant cooling device.Type: GrantFiled: March 28, 2017Date of Patent: September 18, 2018Assignee: FUJITSU LIMITEDInventors: Keita Hirai, Hideo Kubo, Naofumi Kosugi
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Publication number: 20180153058Abstract: A cooling system includes an immersion tank that includes a liquid coolant sealed therein, a housing that includes through-holes formed in a top portion and a bottom portion thereof, respectively, and disposed within the immersion tank, an electronic device disposed in the housing in a state of being immersed in the coolant, a coolant flow path formed between an inner surface of the immersion tank and an outer surface of the housing to couplet he through-hole in the top portion of the housing to the through-hole in the bottom portion of the housing so that the coolant flows therethrough, and a heat transfer member that transports heat of the coolant in the coolant flow path to an outside of the immersion tank.Type: ApplicationFiled: October 19, 2017Publication date: May 31, 2018Applicant: FUJITSU LIMITEDInventors: Keita Hirai, Tsuyoshi So, NAOFUMI KOSUGI
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Publication number: 20180135901Abstract: A manifold includes: a branch pipe including an inflow port and a plurality of outflow ports; and a partition wall that partitions an inside of the branch pipe into a side of the inflow port and a side of the plurality of outflow ports and includes: a plurality of through-holes that have a total opening area greater than an opening area of the inflow port; and a plurality of first facing portions that face the respective outflow ports.Type: ApplicationFiled: October 25, 2017Publication date: May 17, 2018Applicant: FUJITSU LIMITEDInventors: Keita Hirai, Tsuyoshi So, NAOFUMI KOSUGI
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Publication number: 20180132387Abstract: A rack mount-type information processing apparatus includes: a plurality of slots, into each of which an electronic device is inserted, a liquid-cooled element provided in a cooling target included in the electronic device, a liquid to cool the cooling target being circulated in the liquid-cooled element; a manifold pipe extending in a direction where the slots are arranged; and a plurality of connection pipes configured to interconnect the liquid-cooled element and the manifold pipe, and coupled in parallel to the manifold pipe at a portion of the manifold pipe which corresponds to at least one slot among the plurality of slots.Type: ApplicationFiled: October 5, 2017Publication date: May 10, 2018Applicant: FUJITSU LIMITEDInventors: Tsuyoshi So, Osamu Aizawa, Keita Hirai, Koji NAKAGAWA, Yoshinori Uzuka, Nobumitsu Aoki, NAOFUMI KOSUGI
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Patent number: 9936606Abstract: A liquid immersion cooler including: a refrigerant tank that stores a silicone oil-based insulating refrigerant immersing an electronic device; a circulation passage that is provided between the refrigerant tank and a refrigerant cooler, and through which the silicone oil-based insulating refrigerant flows; and a pump that is arranged on the circulation passage, and circulates the silicone oil-based insulating refrigerant between the refrigerant tank and the refrigerant cooler.Type: GrantFiled: April 6, 2017Date of Patent: April 3, 2018Assignee: FUJITSU LIMITEDInventors: Naofumi Kosugi, Takashi Yamamoto
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Publication number: 20180084670Abstract: An immersion cooling apparatus includes: a refrigerant tank configured to store a non-boiling fluorine-based insulating refrigerant in which an electronic device is to be immersed; a circulation passage of the fluorine-based insulating refrigerant that is located between the refrigerant tank and a refrigerant cooling device; and a sealed pump that is arranged in the circulation passage, is configured to seal a rotor shaft with an impeller and a bearing portion for the rotor shaft in a sealed case while the rotor shaft and the bearing portion are immersed in the fluorine-based insulating refrigerant, and is configured to circulate the fluorine-based insulating refrigerant between the refrigerant tank and the refrigerant cooling device.Type: ApplicationFiled: March 28, 2017Publication date: March 22, 2018Applicant: FUJITSU LIMITEDInventors: Keita Hirai, Hideo Kubo, NAOFUMI KOSUGI
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Publication number: 20180063991Abstract: A liquid immersion bath includes: a liquid immersion bath main body in which liquid coolant and an electronic device to be immersed in the coolant are placed; a coolant inlet and a coolant outlet provided to the liquid immersion bath main body; a coolant discharge port which floats on a liquid surface of the liquid coolant in the liquid immersion bath main body; and a hose which couples the coolant outlet and the coolant discharge port and bends in accordance with a movement of the coolant discharge port due to variation in a height of the liquid surface.Type: ApplicationFiled: May 23, 2017Publication date: March 1, 2018Applicant: FUJITSU LIMITEDInventors: Keita Hirai, Tsuyoshi So, NAOFUMI KOSUGI
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Publication number: 20180054916Abstract: An underwater data center includes an electronic device; a housing member that houses the electronic device and that is configured to be disposed under water; and a heat exchanger that is provided at the housing member and that is configured to discharge, into the water, heat discharged from the electronic device, with a face of the heat exchanger that discharges the heat making contact with the water, an opening being formed in a bottom face of the housing member and placing an inside of the housing member in communication with the water.Type: ApplicationFiled: July 3, 2017Publication date: February 22, 2018Applicant: FUJITSU LIMITEDInventors: NAOFUMI KOSUGI, Susumu TAKAHASHI, Kiyomasa Kamei