Patents by Inventor Shinnosuke FUJIWARA
Shinnosuke FUJIWARA 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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Publication number: 20220322564Abstract: A cooling device includes: a downstream heat radiation member that includes a plurality of downstream fins; and an upstream heat radiation member that is arranged on an upstream side in a flow direction of cooling air with a gap from the downstream heat radiation member, includes a plurality of upstream fins, and is provided with a low pressure loss portion in which pressure loss is lower than pressure loss in another portion in one portion in a fin arrangement direction orthogonal to the flow direction.Type: ApplicationFiled: January 4, 2022Publication date: October 6, 2022Applicant: FUJITSU LIMITEDInventors: Hideo KUBO, Kenji SASABE, Shinnosuke FUJIWARA, Nobumitsu AOKI, Keita HIRAI, Atsushi ENDO, Masahide KODAMA, Kento OHGA
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Publication number: 20210372707Abstract: A cooling device includes a vessel having a refrigerant sealed inside, an evaporator that receives heat to evaporate a liquid phase of the refrigerant inside the vessel, a condenser that dissipates heat to condense a vapor phase of the refrigerant inside the vessel, a tube shaped transporter that transports the liquid-phase refrigerant inside the vessel to the evaporator by capillary action, and a gap generator that generates a gap between the transporter and the evaporator for the liquid-phase refrigerant to move from the transporter to the evaporator.Type: ApplicationFiled: February 22, 2021Publication date: December 2, 2021Applicant: FUJITSU LIMITEDInventors: Hideo Kubo, ATSUSHI ENDO, Masahide KODAMA, Shinnosuke FUJIWARA
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Patent number: 11116106Abstract: A cooling device includes: an inner tank configured to store a first coolant which is a liquid; a separation wall that is provided in the inner tank, that faces a side wall portion of the inner tank, that forms an accommodating portion in which an electronic device to be immersed in the first coolant is accommodated, and that forms, at at least part of a periphery of the accommodating portion, a coolant channel through which the first coolant is to flow toward a lower side of the inner tank; an outer tank which is disposed outside the inner tank and through which a second coolant flows; and a heat transfer unit that is provided between the inner tank and the outer tank and that is configured to transfer heat from the first coolant to the second coolant.Type: GrantFiled: January 30, 2020Date of Patent: September 7, 2021Assignee: FUJITSU LIMITEDInventors: Shinobu Harada, Youichi Yokota, Keita Hirai, Shinnosuke Fujiwara
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Patent number: 11064631Abstract: A liquid immersion cooling device for information processing apparatuses. The liquid immersion cooling device includes an immersion tank, a refrigerant liquid that is retained in the immersion tank, and a plurality of fillers that are filled in the immersion tank and that float on a surface of the refrigerant liquid to cover the surface of the refrigerant liquid.Type: GrantFiled: June 26, 2018Date of Patent: July 13, 2021Assignee: FUJITSU LIMITEDInventors: Tsuyoshi So, Hideo Kubo, Masayuki Watanabe, Shinnosuke Fujiwara
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Patent number: 10881019Abstract: A cooling apparatus includes an immersion-tank configured to store a refrigerant, a refrigerant suction port formed at a lower portion of the immersion-tank, the refrigerant suction port being configured to suck the refrigerant from an outside of the immersion-tank into an inside of the immersion-tank, an electronic device immersed in the refrigerant, the electronic device including, a first heat-generation portion, a second heat-generation portion having a heat-generation amount smaller than a heat-generation amount of the first heat-generation portion, and a refrigerant inlet positioned below the first heat-generation portion and the second heat-generation portion and being open downward, and a block positioned below the first heat-generation portion and the second heat-generation portion, the block including a through-hole through which a region positioned below the first heat-generation portion in the refrigerant inlet is open, and a closing portion that closes a region positioned below the second heat-geType: GrantFiled: March 4, 2019Date of Patent: December 29, 2020Assignee: FUJITSU LIMITEDInventors: Shinnosuke Fujiwara, Nobumitsu Aoki, Hideo Kubo, Keita Hirai
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Publication number: 20200267872Abstract: A cooling device includes: an inner tank configured to store a first coolant which is a liquid; a separation wall that is provided in the inner tank, that faces a side wall portion of the inner tank, that forms an accommodating portion in which an electronic device to be immersed in the first coolant is accommodated, and that forms, at at least part of a periphery of the accommodating portion, a coolant channel through which the first coolant is to flow toward a lower side of the inner tank; an outer tank which is disposed outside the inner tank and through which a second coolant flows; and a heat transfer unit that is provided between the inner tank and the outer tank and that is configured to transfer heat from the first coolant to the second coolant.Type: ApplicationFiled: January 30, 2020Publication date: August 20, 2020Applicant: FUJITSU LIMITEDInventors: Shinobu Harada, Youichi YOKOTA, Keita Hirai, Shinnosuke FUJIWARA
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Publication number: 20190281727Abstract: A cooling apparatus includes an immersion-tank configured to store a refrigerant, a refrigerant suction port formed at a lower portion of the immersion-tank, the refrigerant suction port being configured to suck the refrigerant from an outside of the immersion-tank into an inside of the immersion-tank, an electronic device immersed in the refrigerant, the electronic device including, a first heat-generation portion, a second heat-generation portion having a heat-generation amount smaller than a heat-generation amount of the first heat-generation portion, and a refrigerant inlet positioned below the first heat-generation portion and the second heat-generation portion and being open downward, and a block positioned below the first heat-generation portion and the second heat-generation portion, the block including a through-hole through which a region positioned below the first heat-generation portion in the refrigerant inlet is open, and a closing portion that closes a region positioned below the second heat-geType: ApplicationFiled: March 4, 2019Publication date: September 12, 2019Applicant: FUJITSU LIMITEDInventors: Shinnosuke FUJIWARA, Nobumitsu Aoki, Hideo Kubo, Keita Hirai
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Patent number: 10225951Abstract: The present application discloses a liquid immersion tank of an electronic equipment, which restrains a gas from being mixed in a circulation path even when an outflow port to a circulation path exists in the vicinity of a liquid surface. The liquid immersion tank of the electronic equipment, which is disclosed in the present application, includes a tank body being receivable of the electronic equipment and being connected to the circulation path of a coolant for liquid-cooling the electronic equipment by being immersed in the liquid coolant, and an enclosure including inside an outflow port to the circulation path and receiving an inflow of the coolant overflowing from a liquid surface in the tank body.Type: GrantFiled: June 8, 2017Date of Patent: March 5, 2019Assignee: FUJITSU LIMITEDInventors: Shinnosuke Fujiwara, Hideo Kubo
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Publication number: 20190014685Abstract: A liquid immersion cooling device for information processing apparatuses. The liquid immersion cooling device includes an immersion tank, a refrigerant liquid that is retained in the immersion tank, and a plurality of fillers that are filled in the immersion tank and that float on a surface of the refrigerant liquid to cover the surface of the refrigerant liquid.Type: ApplicationFiled: June 26, 2018Publication date: January 10, 2019Applicant: FUJITSU LIMITEDInventors: Tsuyoshi So, Hideo Kubo, Masayuki Watanabe, Shinnosuke FUJIWARA
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Patent number: 10149408Abstract: A liquid immersion bath for an electronic device includes: a bath body that is capable of housing the electronic device, is coupled to a circulation path through which a liquid coolant which cools the electronic device immersed in the liquid coolant circulates, and includes a gas phase portion corresponding to a space free from the liquid coolant; and a container that is disposed in the gas phase portion and has a volume which changes in accordance with a pressure of the gas phase portion, wherein an inside of the container is coupled to an outside of the bath body.Type: GrantFiled: June 1, 2017Date of Patent: December 4, 2018Assignee: FUJITSU LIMITEDInventors: Shinnosuke Fujiwara, Hideo Kubo
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Publication number: 20180020572Abstract: The present application discloses a liquid immersion tank of an electronic equipment, which restrains a gas from being mixed in a circulation path even when an outflow port to a circulation path exists in the vicinity of a liquid surface. The liquid immersion tank of the electronic equipment, which is disclosed in the present application, includes a tank body being receivable of the electronic equipment and being connected to the circulation path of a coolant for liquid-cooling the electronic equipment by being immersed in the liquid coolant, and an enclosure including inside an outflow port to the circulation path and receiving an inflow of the coolant overflowing from a liquid surface in the tank body.Type: ApplicationFiled: June 8, 2017Publication date: January 18, 2018Applicant: FUJITSU LIMITEDInventors: Shinnosuke FUJIWARA, Hideo Kubo
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Publication number: 20180020570Abstract: A liquid immersion bath for an electronic device includes: a bath body that is capable of housing the electronic device, is coupled to a circulation path through which a liquid coolant which cools the electronic device immersed in the liquid coolant circulates, and includes a gas phase portion corresponding to a space free from the liquid coolant; and a container that is disposed in the gas phase portion and has a volume which changes in accordance with a pressure of the gas phase portion, wherein an inside of the container is coupled to an outside of the bath body.Type: ApplicationFiled: June 1, 2017Publication date: January 18, 2018Applicant: FUJITSU LIMITEDInventors: Shinnosuke FUJIWARA, Hideo Kubo
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Patent number: 9698801Abstract: A phase locked loop circuit control device includes: a phase locked loop circuit configured to generate a clock signal; and a control unit configured to, when being instructed to change a frequency of the clock signal from a current frequency to a target frequency, control the phase locked loop circuit to make the frequency change stepwise from the current frequency to the target frequency, in which the control unit changes the frequency of the clock signal by a first change amount in a first frequency range out of the range of the current frequency to the target frequency, and changes the frequency of the clock signal by a second change amount in a second frequency range out of the range of the current frequency to the target frequency.Type: GrantFiled: March 9, 2016Date of Patent: July 4, 2017Assignee: Fujitsu LimitedInventors: Shinnosuke Fujiwara, Michiharu Hara
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Publication number: 20160352342Abstract: A phase locked loop circuit control device includes: a phase locked loop circuit configured to generate a clock signal; and a control unit configured to, when being instructed to change a frequency of the clock signal from a current frequency to a target frequency, control the phase locked loop circuit to make the frequency change stepwise from the current frequency to the target frequency, in which the control unit changes the frequency of the clock signal by a first change amount in a first frequency range out of the range of the current frequency to the target frequency, and changes the frequency of the clock signal by a second change amount in a second frequency range out of the range of the current frequency to the target frequency.Type: ApplicationFiled: March 9, 2016Publication date: December 1, 2016Applicant: FUJITSU LIMITEDInventors: Shinnosuke FUJIWARA, Michiharu Hara
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Patent number: D845884Type: GrantFiled: December 29, 2017Date of Patent: April 16, 2019Assignee: BRIDGESTONE CORPORATIONInventor: Shinnosuke Fujiwara
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Patent number: D846487Type: GrantFiled: December 29, 2017Date of Patent: April 23, 2019Assignee: BRIDGESTONE CORPORATIONInventor: Shinnosuke Fujiwara
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Patent number: D847734Type: GrantFiled: December 29, 2017Date of Patent: May 7, 2019Assignee: BRIDGESTONE CORPORATIONInventor: Shinnosuke Fujiwara