Patents by Inventor Koji Hagihara
Koji Hagihara 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: 11371787Abstract: A gas cooler effectively prevents or suppresses an outflow of drain water to the outside. The gas cooler includes a casing, a cooling unit, a seal plate, a lead-in port, a lead-out port, and a drain scattering prevention member. The cooling unit is accommodated within the casing and cools gas. The seal plate is provided in the cooling unit and partitions an inside of the casing into an upper space thorough which the gas before passing through the cooling unit flows and a bottom space through which the gas after passing through the cooling unit flows. The gas is led from the lead-in port into the upper space, and the gas is led out of the bottom space via the lead-out port. The drain scattering prevention member is disposed in the bottom space, and collects the drain water, while allowing the gas to pass therethrough.Type: GrantFiled: November 21, 2016Date of Patent: June 28, 2022Assignee: KOBELCO COMPRESSORS CORPORATIONInventors: Kazuya Hirata, Koji Hagihara
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Patent number: 11162162Abstract: A steel with high hardness and excellent toughness contains, in mass %, 0.40-1.00% C, 0.10-2.00% Si, 0.10-1.00% Mn, 0.030% or less P, 0.030% or less S, 1.10-3.20% Cr, 0.010-0.10% Al, and 0.15-0.50% V, and further contains at least one or two of 2.50% or less Ni and 1.00% or less Mo, with an amount of (C+V) being 0.60% or more in mass %, with the balance consisting of Fe and unavoidable impurities. The steel has a microstructure which is a martensitic structure with finely dispersed Fe-based ? carbides, with its prior austenite grain size being 20 ?m or less.Type: GrantFiled: August 8, 2018Date of Patent: November 2, 2021Assignees: OSAKA UNIVERSITY, KOMATSU LTD.Inventors: Yoritoshi Minamino, Koji Hagihara, Koji Yamamoto, Shohei Ikurumi, Yusuke Hiratsuka, Takeshi Fujimatsu, Toshiyuki Sugimoto
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Patent number: 11067081Abstract: A screw compressor includes: a screw compressor main body; a motor for driving the screw compressor main body; a gearbox interposed between the screw compressor main body and the motor to transmit a driving force of the motor to the screw compressor main body; and a gas cooler positioned below either the screw compressor main body or the motor and attached as a separate body to a side surface of the gearbox.Type: GrantFiled: November 29, 2016Date of Patent: July 20, 2021Assignee: Kobe Steel, Ltd.Inventors: Kazuya Hirata, Koji Hagihara
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Patent number: 10895346Abstract: A pressure vessel, comprising: a vessel body having a rectangular parallelepiped shape for containing high pressure gas; a dividing wall in the form of a plate and disposed in the vessel body; and a plurality of ribs disposed on an outer surface of the vessel body. The vessel body includes: a top wall having a rectangular shape; a bottom wall having a rectangular shape and facing the top wall; and a surrounding wall joining a peripheral edge of the top wall and a peripheral edge of the bottom wall. The dividing wall is disposed in the vessel body to define a first chamber having a rectangular parallelepiped shape and a second chamber having a rectangular parallelepiped shape in cooperation with the vessel body. Each of the plurality of ribs extends over an entire circumference of the vessel body and along a plane perpendicularly intersecting the dividing wall.Type: GrantFiled: February 26, 2015Date of Patent: January 19, 2021Assignee: Kobe Steel, Ltd.Inventors: Yasuto Kataoka, Kazuya Hirata, Koji Hagihara
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Publication number: 20200080180Abstract: A steel with high hardness and excellent toughness contains, in mass %, 0.40-1.00% C, 0.10-2.00% Si, 0.10-1.00% Mn, 0.030% or less P, 0.030% or less S, 1.10-3.20% Cr, 0.010-0.10% Al, and 0.15-0.50% V, and further contains at least one or two of 2.50% or less Ni and 1.00% or less Mo, with an amount of (C+V) being 0.60% or more in mass %, with the balance consisting of Fe and unavoidable impurities. The steel has a microstructure which is a martensitic structure with finely dispersed Fe-based ? carbides, with its prior austenite grain size being 20 ?m or less.Type: ApplicationFiled: August 8, 2018Publication date: March 12, 2020Applicants: OSAKA UNIVERSITY, KOMATSU LTD.Inventors: Yoritoshi MINAMINO, Koji HAGIHARA, Koji YAMAMOTO, Shohei IKURUMI, Yusuke HIRATSUKA, Takeshi FUJIMATSU, Toshiyuki SUGIMOTO
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Patent number: 10415889Abstract: A gas cooler includes a pair of seal plates and a pair of first support ribs. The individual seal plate has a stepped surface which extends in a direction that a cooling portion is inserted into a casing. The individual first support rib supports the stepped surface. With the configuration where the stepped surface is supported by the first support rib, the inside of the casing is partitioned into an upstream-side space communicated with an introducing port and a downstream-side space communicated with a discharging port.Type: GrantFiled: March 12, 2015Date of Patent: September 17, 2019Assignee: Kobe Steel, Ltd.Inventors: Yusuke Tomioka, Kazuya Hirata, Koji Hagihara, Yasuto Kataoka
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Publication number: 20180363992Abstract: A gas cooler effectively prevents or suppresses an outflow of drain water to the outside. The gas cooler includes a casing, a cooling unit, a seal plate, a lead-in port, a lead-out port, and a drain scattering prevention member. The cooling unit is accommodated within the casing and cools gas. The seal plate is provided in the cooling unit and partitions an inside of the casing into an upper space thorough which the gas before passing through the cooling unit flows and a bottom space through which the gas after passing through the cooling unit flows. The gas is led from the lead-in port into the upper space, and the gas is led out of the bottom space via the lead-out port. The drain scattering prevention member is disposed in the bottom space, and collects the drain water, while allowing the gas to pass therethrough.Type: ApplicationFiled: November 21, 2016Publication date: December 20, 2018Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Kazuya HIRATA, Koji HAGIHARA
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Publication number: 20180347569Abstract: A screw compressor includes: a screw compressor main body; a motor for driving the screw compressor main body; a gearbox interposed between the screw compressor main body and the motor to transmit a driving force of the motor to the screw compressor main body; and a gas cooler positioned below either the screw compressor main body or the motor and attached as a separate body to a side surface of the gearbox.Type: ApplicationFiled: November 29, 2016Publication date: December 6, 2018Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Kazuya HIRATA, Koji HAGIHARA
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Publication number: 20170167797Abstract: A gas cooler includes a pair of seal plates and a pair of first support ribs. The individual seal plate has a stepped surface which extends in a direction that a cooling portion is inserted into a casing. The individual first support rib supports the stepped surface. With the configuration where the stepped surface is supported by the first support rib, the inside of the casing is partitioned into an upstream-side space communicated with an introducing port and a downstream-side space communicated with a discharging port.Type: ApplicationFiled: March 12, 2015Publication date: June 15, 2017Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Yusuke TOMIOKA, Kazuya HIRATA, Koji HAGIHARA, Yasuto KATAOKA
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Publication number: 20160377229Abstract: A pressure vessel, comprising: a vessel body having a rectangular parallelepiped shape for containing high pressure gas; a dividing wall in the form of a plate and disposed in the vessel body; and a plurality of ribs disposed on an outer surface of the vessel body. The vessel body includes: a top wall having a rectangular shape; a bottom wall having a rectangular shape and facing the top wall; and a surrounding wall joining a peripheral edge of the top wall and a peripheral edge of the bottom wall. The dividing wall is disposed in the vessel body to define a first chamber having a rectangular parallelepiped shape and a second chamber having a rectangular parallelepiped shape in cooperation with the vessel body. Each of the plurality of ribs extends over an entire circumference of the vessel body and along a plane perpendicularly intersecting the dividing wall.Type: ApplicationFiled: February 26, 2015Publication date: December 29, 2016Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Yasuto KATAOKA, Kazuya HIRATA, Koji HAGIHARA
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Patent number: 8117936Abstract: A gear support mechanism for supporting two gears and an intermediate gear which meshes with the two gears to transfer rotation of one of the two gears to the other, includes a gear-shaft support member(s) which supports a gear shaft of the intermediate gear; and a spring member installed between the gear-shaft support member and the intermediate gear. The spring member includes a gear contacting portion which is in contact with the intermediate gear, and resilient support legs extend radially from the gear contacting portion and are in contact with the gear-shaft support member, the spring member biasing the intermediate gear in a direction of an axis of the gear shaft. Each of the two gears is positioned in an inter-leg space between adjacent resilient support legs as viewed in a direction along the axis of the gear shaft.Type: GrantFiled: November 5, 2008Date of Patent: February 21, 2012Assignee: Hoya CorporationInventors: Hiroshi Nomura, Koji Hagihara
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Patent number: 7956060Abstract: The present invention provides an antitumor agent and the like, which comprises as an active ingredient, a pyrimidine derivative represented by Formula (I): [wherein —X—Y—Z— represents —O—CR3?N— (wherein R3 represents a hydrogen atom, a substituted or unsubstituted aromatic heterocyclic group and the like) and the like, R1 represents —NR10R11 (wherein R10 and R11 may be the same or different, and each represents a hydrogen atom, substituted or unsubstituted lower alkyl and the like) and the like, R2 represents —NR13R14 (wherein R13 and R14 may be the same or different, and each represents a hydrogen atom, substituted or unsubstituted lower alkyl and the like)] or a pharmaceutically acceptable salt thereof.Type: GrantFiled: March 30, 2005Date of Patent: June 7, 2011Assignee: Kyowa Hakko Kirin Co., Ltd.Inventors: Hitoshi Arai, Tsutomu Matsumura, Syoichi Isami, Hiroshi Ishida, Koji Hagihara, Hiroshi Umehara, Yoshinori Yamashita, Nana Oiwa, Yukimasa Shiotsu, Tomoki Naoe, Hitoshi Kiyoi
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Patent number: 7759491Abstract: The present invention provides a method for producing an indazol-3-ylmethyl phosphonium salt represented by Formula (IV): [wherein X represents halogen, OSO2Ra (wherein Ra represents substituted or unsubstituted lower alkyl, substituted or unsubstituted aryl or the like), or OC(?O)Rb (wherein Rb has the same meaning as the above Ra), or the like, and R1, R2 and R3 may be the same or different and each represents substituted or unsubstituted aryl or the like] or a salt thereof, which comprises reacting a compound represented by Formula (I): a compound represented by Formula (II): H—X??(II) (wherein X has the same meaning as defined above), and a compound represented by Formula (III): (wherein R1, R2 and R3 have the same meanings as defined above, respectively), and the like.Type: GrantFiled: April 28, 2006Date of Patent: July 20, 2010Assignee: Kyowa Hakko Kirin Co., Ltd.Inventors: Koji Hagihara, Tsutomu Matsumura, Masahiro Hoshikawa, Iwao Chujo
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Publication number: 20090120223Abstract: A gear support mechanism for supporting two gears and an intermediate gear which meshes with the two gears to transfer rotation of one of the two gears to the other, includes a gear-shaft support member(s) which supports a gear shaft of the intermediate gear; and a spring member installed between the gear-shaft support member and the intermediate gear. The spring member includes a gear contacting portion which is in contact with the intermediate gear, and resilient support legs extend radially from the gear contacting portion and are in contact with the gear-shaft support member, the spring member biasing the intermediate gear in a direction of an axis of the gear shaft. Each of the two gears is positioned in an inter-leg space between adjacent resilient support legs as viewed in a direction along the axis of the gear shaft.Type: ApplicationFiled: November 5, 2008Publication date: May 14, 2009Applicant: HOYA CORPORATIONInventors: Hiroshi NOMURA, Koji HAGIHARA
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Publication number: 20090069568Abstract: The present invention provides a method for producing an indazol-3-ylmethyl phosphonium salt represented by Formula (IV): [wherein X represents halogen, OSO2Ra (wherein Ra represents substituted or unsubstituted lower alkyl, substituted or unsubstituted aryl or the like), or OC(?O)Rb (wherein Rb has the same meaning as the above Ra), or the like, and R1, R2 and R3 may be the same or different and each represents substituted or unsubstituted aryl or the like] or a salt thereof, which comprises reacting a compound represented by Formula (I): a compound represented by Formula (II): H—X??(II) (wherein X has the same meaning as defined above), and a compound represented by Formula (III): (wherein R1, R2 and R3 have the same meanings as defined above, respectively), and the like.Type: ApplicationFiled: April 28, 2006Publication date: March 12, 2009Applicant: KYOWA HAKKO KOGYO CO., LTD.Inventors: Koji Hagihara, Tsutomu Matsumura, Masahiro Hoshikawa, Iwao Chujo
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Publication number: 20090012060Abstract: The present invention provides an antitumor agent and the like, which comprises as an active ingredient, a pyrimidine derivative represented by Formula (I): [wherein —X—Y-Z- represents —O—CR3?N— (wherein R3 represents a hydrogen atom, a substituted or unsubstituted aromatic heterocyclic group and the like) and the like, R1 represents —NR10R11 (wherein R10 and R11 may be the same or different, and each represents a hydrogen atom, substituted or unsubstituted lower alkyl and the like) and the like, R2 represents —NR13R14 (wherein R13 and R14 may be the same or different, and each represents a hydrogen atom, substituted or unsubstituted lower alkyl and the like)] or a pharmaceutically acceptable salt thereof.Type: ApplicationFiled: March 30, 2005Publication date: January 8, 2009Applicant: Kyowa Hakko Kogyo Co., Ltd.Inventors: Hitoshi Arai, Tsutomu Matsumura, Syoichi Tsami, Hiroshi Ishida, Koji Hagihara, Hiroshi Umehara, Yoshinori Yamashita, Nana Oiwa, Yukimasa Shiotsu, Tomoki Naoe, Hitoshi Kiyoi