Patents by Inventor Seiji Hibino
Seiji Hibino 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: 9696096Abstract: A loop heat pipe includes an evaporator to cause a liquid-phase working fluid to be vaporized by heat from a heat source; a condenser to condense the vaporized working fluid; a circulation path including a liquid line and a vapor line to connect the condenser and the evaporator in a loop; a tank provided on the liquid line and configured to accommodate the liquid-phase working fluid; a connecting line to connect the tank and the evaporator to supply the liquid-phase working fluid to the evaporator; and a bypass line positioned over the connecting line in a direction of gravity and connecting the evaporator and the tank, the bypass line being configured to discharge a vapor bubble produced in the evaporator during operation of the loop heat pipe to the tank.Type: GrantFiled: April 25, 2013Date of Patent: July 4, 2017Assignee: FUJITSU LIMITEDInventors: Hiroki Uchida, Susumu Ogata, Seiji Hibino
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Patent number: 8780560Abstract: There is provided a loop heat pipe which includes an evaporator that internally includes at least one wick built, a condenser, a liquid pipe and a vapor pipe that connect the evaporator and the condenser to each other, and a heat dispersion cavity that is formed inside the evaporator, and disperses a vapor, wherein the wick includes, a first wick that is porous, a second wick that is porous, the second wick being inserted into the first wick from the liquid pipe side and including a pore size larger than the first wick, and a vapor channel that is defined between the first wick and the second wick. The vapor channel is connected at an end on the liquid pipe side to the heat dispersion cavity.Type: GrantFiled: August 6, 2012Date of Patent: July 15, 2014Assignee: Fujitsu LimitedInventors: Susumu Ogata, Hiroki Uchida, Seiji Hibino, Takeshi Shioga, Takahiro Kimura
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Patent number: 8705236Abstract: A loop heat pipe includes: an evaporator to convert liquid phase working fluid into vapor phase working fluid; a condenser to convert vapor phase working fluid into liquid phase working fluid; a first vapor line and a first liquid line to allow the evaporator to communicate with the condenser and form a circular main loop; and a second vapor line and a second liquid line to allow the evaporator to communicate with the condenser and form a circular auxiliary loop; wherein the evaporator includes a reservoir that temporarily stores the liquid phase working fluid, a first vapor collector that communicates with the first vapor line, a second vapor collector that communicates with the second vapor line, first wick disposed between the reservoir and the first vapor collector, and second wick disposed between the reservoir and the second vapor collector.Type: GrantFiled: June 20, 2012Date of Patent: April 22, 2014Assignee: Fujitsu LimitedInventors: Hiroki Uchida, Susumu Ogata, Seiji Hibino, Jun Taniguchi
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Publication number: 20130233521Abstract: A loop heat pipe includes an evaporator to cause a liquid-phase working fluid to be vaporized by heat from a heat source; a condenser to condense the vaporized working fluid; a circulation path including a liquid line and a vapor line to connect the condenser and the evaporator in a loop; a tank provided on the liquid line and configured to accommodate the liquid-phase working fluid; a connecting line to connect the tank and the evaporator to supply the liquid-phase working fluid to the evaporator; and a bypass line positioned over the connecting line in a direction of gravity and connecting the evaporator and the tank, the bypass line being configured to discharge a vapor bubble produced in the evaporator during operation of the loop heat pipe to the tank.Type: ApplicationFiled: April 25, 2013Publication date: September 12, 2013Applicant: FUJITSU LIMITEDInventors: Hiroki Uchida, Susumu Ogata, Seiji Hibino
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Publication number: 20130083482Abstract: A loop heat pipe includes: an evaporator to convert liquid phase working fluid into vapor phase working fluid; a condenser to convert vapor phase working fluid into liquid phase working fluid; a first vapor line and a first liquid line to allow the evaporator to communicate with the condenser and form a circular main loop; and a second vapor line and a second liquid line to allow the evaporator to communicate with the condenser and form a circular auxiliary loop; wherein the evaporator includes a reservoir that temporarily stores the liquid phase working fluid, a first vapor collector that communicates with the first vapor line, a second vapor collector that communicates with the second vapor line, first wick disposed between the reservoir and the first vapor collector, and second wick disposed between the reservoir and the second vapor collector.Type: ApplicationFiled: June 20, 2012Publication date: April 4, 2013Applicant: FUJITSU LIMITEDInventors: Hiroki Uchida, Susumu Ogata, Seiji Hibino, Jun Taniguchi
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Publication number: 20130044432Abstract: There is provided a loop heat pipe which includes an evaporator that internally includes at least one wick built, a condenser, a liquid pipe and a vapor pipe that connect the evaporator and the condenser to each other, and a heat dispersion cavity that is formed inside the evaporator, and disperses a vapor, wherein the wick includes, a first wick that is porous, a second wick that is porous, the second wick being inserted into the first wick from the liquid pipe side and including a pore size larger than the first wick, and a vapor channel that is defined between the first wick and the second wick. The vapor channel is connected at an end on the liquid pipe side to the heat dispersion cavity.Type: ApplicationFiled: August 6, 2012Publication date: February 21, 2013Applicant: FUJITSU LIMITEDInventors: Susumu Ogata, Hiroki Uchida, Seiji Hibino, Takeshi Shioga, Takahiro Kimura
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Publication number: 20120247750Abstract: A server device includes: electronic devices; a housing that houses the electronic devices; at least one fan; air volume control units configured to adjust a volume of cooling airflow which is generated by rotation of the at least one fan and is ventilated through the electronic devices by opening and closing of respective valves; a valve opening control unit configured to control valve opening degrees of the air volume control units so that temperatures inside the electronic devices become a given target temperature; a fan control unit configured to run the at least one fan at a fan rotating speed that achieves a volume of cooling airflow to make temperatures inside the electronic devices become the given target temperature at a valve opening degree higher than the valve opening degrees that the valve opening control unit controls.Type: ApplicationFiled: January 18, 2012Publication date: October 4, 2012Applicants: Fujitsu Technology Solutions Intellectual Property GmbH, Fujitsu LimitedInventors: Hiroki Kobayashi, Yuichi Sato, Takahiro Kimura, Jun Taniguchi, Seiji Hibino, Toshio Sugimoto, Yasushi Umezawa, Reiko Kondo, Bernhard Schräder, Gerold Scheidler, Van Son Nguyen, Geoff Poskitt
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Publication number: 20120137718Abstract: A cooling apparatus includes: an evaporator, including a porous body, a vapor channel and a liquid channel separated by the porous body, to evaporate a working fluid in liquid phase; a condenser to condense the working fluid in vapor phase; a liquid reservoir tank to reserve the working fluid in the liquid phase; a vapor line connecting an outlet of the vapor channel in the evaporator and an inlet of the condenser; a liquid line connecting an outlet of the condenser and a first inlet of the liquid reservoir tank; a liquid supply line connecting an outlet of the liquid reservoir tank and an inlet of the liquid channel in the evaporator; a liquid return line connecting an outlet of the liquid channel in the evaporator and a second inlet of the liquid reservoir tank; and a liquid transport unit interposed in the liquid supply line.Type: ApplicationFiled: September 22, 2011Publication date: June 7, 2012Applicant: FUJITSU LIMITEDInventors: Hiroki UCHIDA, Susumu Ogata, Seiji Hibino
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Patent number: 7927756Abstract: In the present invention, a material having a structure represented by formula (1) or (2) (wherein W equals N or C) is used as a solid electrolyte for a fuel cell. An electrolyte membrane having a small fuel crossover and a fuel cell having excellent ion conductivity and service capacity are obtained.Type: GrantFiled: August 15, 2006Date of Patent: April 19, 2011Assignee: Fujitsu LimitedInventors: Seiji Hibino, Masami Tsutsumi, Kensuke Yoshida, Hiroaki Yoshida, Yoichi Takasu, Nawalage Florence Cooray, Fumio Takei
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Patent number: 7544436Abstract: A direct methanol type fuel cell is provided with a generated gas ejection part having a bundle made up of hollow fiber membranes extending between a fuel electrode and a liquid fuel vaporizing layer that vaporizes a methanol aqueous solution and supplies methanol gas to the fuel electrode. The hollow fiber membranes selectively pass carbon dioxide within a mixture gas that includes methanol, the carbon dioxide generated at the fuel electrode and the like, and eject the carbon dioxide via end portions of the hollow fiber membranes that open at a side surface of the fuel cell via hollow portions. The fuel cell has a high carbon dioxide ejection capability, and suppresses leak of methanol gas. A pressure applying part may be provided to apply a back pressure to the methanol aqueous solution within a fuel storage part, so as to further improve the carbon dioxide ejection capability.Type: GrantFiled: September 12, 2007Date of Patent: June 9, 2009Assignee: Fujitsu LimitedInventors: Makoto Yoshino, Seiji Hibino, Hiroaki Yoshida, Nawalage Florence Cooray, Fumio Takei
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Patent number: 7396797Abstract: A method for producing a catalyst for a fuel cell is provided which is capable of improving output characteristics of the fuel cell. Metal fine particles making up the catalyst for the fuel cell to be used as a fuel electrode and air electrode are formed by reducing platinum salt with molybdenum carbonyl. The catalyst for the fuel cell is formed by supporting platinum-molybdenum fine particles on carbon particles. By employing this reducing method, platinum-molybdenum fine particles being small in size and high in dispersibility can be obtained, making the catalyst for the fuel cell highly active. By constructing the fuel and air electrodes using the catalyst for the fuel cell, high outputs from the fuel cell are made possible.Type: GrantFiled: April 14, 2005Date of Patent: July 8, 2008Assignee: Fujitsu LimitedInventors: Masami Tsutsumi, Seiji Hibino, Hiroaki Yoshida, Fumio Takei, Youichi Takasu, Kensuke Yoshida
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Publication number: 20080003475Abstract: A direct methanol type fuel cell is provided with a generated gas ejection part having a bundle made up of hollow fiber membranes extending between a fuel electrode and a liquid fuel vaporizing layer that vaporizes a methanol aqueous solution and supplies methanol gas to the fuel electrode. The hollow fiber membranes selectively pass carbon dioxide within a mixture gas that includes methanol, the carbon dioxide generated at the fuel electrode and the like, and eject the carbon dioxide via end portions of the hollow fiber membranes that open at a side surface of the fuel cell via hollow portions. The fuel cell as a high carbon dioxide ejection capability, and suppresses leak of methanol gas. A pressure applying part may be provided to apply a back pressure to the methanol aqueous solution within a fuel storage part, so as to further improve the carbon dioxide ejection capability.Type: ApplicationFiled: September 12, 2007Publication date: January 3, 2008Applicant: FUJITSU LIMITEDInventors: Makoto YOSHINO, Seiji HIBINO, Hiroaki YOSHIDA, Nawalage COORAY, Fumio TAKEI
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Publication number: 20070099048Abstract: A fuel cell includes an electric power generation part; the electric power generation part including an air electrode to which oxygen gas is supplied, a fuel electrode to which fuel gas is supplied, and a solid electrolyte layer having a proton conductivity and put between the air electrode and fuel electrode; a fuel storage part storing a liquid fuel; a liquid fuel vaporization film made of non-porous material and configured to vaporize the liquid fuel so as to supply fuel gas to the fuel electrode; and a gas fuel supply speed control plate provided between the liquid fuel vaporization film and the fuel electrode and configured to control a supply speed of the fuel gas to the fuel electrode. The gas fuel supply speed control plate includes a plurality of openings piercing between the liquid fuel vaporization film and the fuel electrode.Type: ApplicationFiled: February 1, 2006Publication date: May 3, 2007Applicants: FUJITSU LIMITED, FDK CORPORATIONInventors: Yoichi Takasu, Fumio Takei, Masami Tsutsumi, Hiroaki Yoshida, Kensuke Yoshida, Seiji Hibino, Makoto Yoshino, Takeo Kasajima, Shinichi Ueki, Takeshi Miyazaki, Osamu Terabayashi
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Publication number: 20060275639Abstract: In the present invention, a material having a structure represented by formula (1) or (2) (wherein W equals N or C) is used as a solid electrolyte for a fuel cell. An electrolyte membrane having a small fuel crossover and a fuel cell having excellent ion conductivity and service capacity are obtained.Type: ApplicationFiled: August 15, 2006Publication date: December 7, 2006Applicant: FUJITSU LIMITEDInventors: Seiji Hibino, Masami Tsutsumi, Kensuke Yoshida, Hiroaki Yoshida, Yoichi Takasu, Nawalage Cooray, Fumio Takei
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Publication number: 20060216574Abstract: A fuel battery 20 includes a fuel supplier 32, and a battery cell structure 31A and a battery cell structure 31B which are arranged to face each other respectively and to sandwich the fuel supplier 32, and in the battery cell structure 31A and the battery cell structure 31B, fuel battery cells CA1 through CA6, and CB1 through CB6 are arranged. Due to separators 40a and 40b, in the battery cell structure 31A, from the fuel electrode of the fuel battery cell CA1 to the air electrode of the fuel battery cell CA6, and in the battery cell structure 31B, from the fuel electrode of the fuel battery cell CB6 to the air electrode of the fuel battery cell CB1, are electrically connected in series. With the cell connector 35, the air electrodes of the fuel battery cells on the diagonal lines of the battery cell structure 31A and the battery cell structure 31B are connected electrically in parallel.Type: ApplicationFiled: May 31, 2006Publication date: September 28, 2006Applicant: FUJITSU LIMITEDInventors: Kensuke Yoshida, Fumio Takei, Masami Tsutsumi, Hiroaki Yoshida, Youichi Takasu, Nawalage Cooray, Seiji Hibino
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Publication number: 20060135357Abstract: A method for producing a catalyst for a fuel cell is provided which is capable of improving output characteristics of the fuel cell. Metal fine particles making up the catalyst for the fuel cell to be used as a fuel electrode and air electrode are formed by reducing platinum salt with molybdenum carbonyl. The catalyst for the fuel cell is formed by supporting platinum-molybdenum fine particles on carbon particles. By employing this reducing method, platinum-molybdenum fine particles being small in size and high in dispersibility can be obtained, making the catalyst for the fuel cell highly active. By constructing the fuel and air electrodes using the catalyst for the fuel cell, high outputs from the fuel cell are made possible.Type: ApplicationFiled: April 14, 2005Publication date: June 22, 2006Applicant: FUJITSU LIMITEDInventors: Masami Tsutsumi, Seiji Hibino, Hiroaki Yoshida, Fumio Takei, Youichi Takasu, Kensuke Yoshida