Patents by Inventor Michiyasu Yamamoto
Michiyasu Yamamoto 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: 11969830Abstract: An aluminum alloy brazing sheet including a core material, a sacrificial material provided on one surface of the core material, a brazing filler material provided on the other surface side of the core material, and an intermediate layer provided between the core material and the brazing filler material. The core material contains Si: 0.30 to 1.00 mass %, Mn: 0.50 to 2.00 mass %, Cu: 0.60 to 1.20 mass %, Mg: 0.05 to 0.80 mass %, and Al. The sacrificial material contains Si: 0.10 to 1.20 mass %, Zn: 2.00 to 7.00 mass %, Mn: 0.40 mass % or less, and Al. The intermediate layer contains Si: 0.05 to 1.20 mass %, Mn: 0.50 to 2.00 mass %, Cu: 0.10 to 1.20 mass %, and Al.Type: GrantFiled: January 29, 2021Date of Patent: April 30, 2024Assignee: Kobe Steel, Ltd.Inventors: Tatsuki Hashimoto, Kenichiro Yoshida, Yuji Shibuya, Akihiro Tsuruno, Yoshikazu Miyano, Hajime Sugito, Michiyasu Yamamoto, Masayuki Makita, Arisu Fujii, Shin Takewaka, Hayaki Teramoto, Koichi Yamamoto, Toshihide Ninagawa
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Publication number: 20230117687Abstract: An aluminum alloy brazing sheet including a core material, a sacrificial material provided on one surface of the core material, a brazing filler material provided on the other surface side of the core material, and an intermediate layer provided between the core material and the brazing filler material. The core material contains Si: 0.30 to 1.00 mass %, Mn: 0.50 to 2.00 mass %, Cu: 0.60 to 1.20 mass %, Mg: 0.05 to 0.80 mass %, and Al. The sacrificial material contains Si: 0.10 to 1.20 mass %, Zn: 2.00 to 7.00 mass %, Mn: 0.40 mass % or less, and Al. The intermediate layer contains Si: 0.05 to 1.20 mass %, Mn: 0.50 to 2.00 mass %, Cu: 0.10 to 1.20 mass %, and Al.Type: ApplicationFiled: January 29, 2021Publication date: April 20, 2023Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Tatsuki HASHIMOTO, Kenichiro YOSHIDA, Yuji SHIBUYA, Akihiro TSURUNO, Yoshikazu MIYANO, Hajime SUGITO, Michiyasu YAMAMOTO, Masayuki MAKITA, Arisu FUJII, Shin TAKEWAKA, Hayaki TERAMOTO, Koichi YAMAMOTO, Toshihide NINAGAWA
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Patent number: 11002498Abstract: An aluminum alloy fin material for a heat exchanger in the present invention comprises an aluminum alloy having a composition containing Mn: 1.2 to 2.0%, Cu: 0.05 to 0.20%, Si: 0.5 to 1.30%, Fe: 0.05 to 0.5%, and Zn: 1.0 to 3.0% by mass and a remainder comprising Al and an unavoidable impurity, further containing one or two or more of Ti: 0.01 to 0.20%, Cr: 0.01 to 0.20% and Mg: 0.01 to 0.20% by mass as desired, and, after heating in brazing, has a tensile strength of 140 MPa or more, a proof stress of 50 MPa or more, an electrical conductivity of 42% IACS or more, an average grain diameter of 150 ?m or more and less than 700 ?m, and a potential of ?800 mV or more and ?720 mV or less.Type: GrantFiled: December 28, 2015Date of Patent: May 11, 2021Assignees: MITSUBISHI ALUMINUM CO., LTD., DENSO CORPORATIONInventors: Shigeki Nakanishi, Shohei Iwao, Masakazu Edo, Hayaki Teramoto, Manabu Hasegawa, Michiyasu Yamamoto, Shoei Teshima
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Patent number: 10401095Abstract: A heat exchanger includes tubes and a header tank. The tubes are arranged in parallel with each other, and fluid flows in the tubes. The header tank is disposed at end portions of the tubes in a longitudinal direction of the tubes and extends in a direction in which the tubes are arranged in parallel with each other to communicate with the tubes. The header tank includes a core plate, a resin tank main body part, and a resiliently-deformable sealing member. The tubes are joined to the core plate. The tank main body part is fixed to the core plate. The core plate includes a receiving part at which the sealing member is disposed. The tank main body part is fixed to the core plate with the sealing member clamped between an end part of the tank main body part on the core plate-side and the receiving part. The receiving part is disposed on a farther side from the tubes in the longitudinal direction of the tubes than the end portions of the tubes in the longitudinal direction of the tubes.Type: GrantFiled: October 2, 2013Date of Patent: September 3, 2019Assignee: DENSO CORPORATIONInventors: Michiyasu Yamamoto, Takahiro Uno, Kazutaka Suzuki
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Patent number: 10286496Abstract: A brazing sheet formed of an aluminum alloy and exhibiting excellent post-brazing strength, corrosion resistance and brazability with a thickness of less than 200 ?m is provided. The brazing sheet includes a core layer, a filler layer of an Al—Si based alloy on one side of the core layer, and a sacrificial layer on the other side of the core layer. The core layer includes more than 1.5 mass % and 2.5 mass % or less of Cu, 0.5 mass % to 2.0 mass % of Mn, Al, and inevitable impurities. The sacrificial layer includes 2.0 mass % to 7.0 mass % of Zn, more than 0.10 mass % and 3.0 mass % or less of Mg, Al, and inevitable impurities. The filler layer and the sacrificial layer each have a thickness of 15 ?m to 50 ?m. A total clad rate of the filler layer and the sacrificial layer is equal to or less than 50%.Type: GrantFiled: February 9, 2015Date of Patent: May 14, 2019Assignees: Kobe Steel, Ltd., DENSO CORPORATIONInventors: Shimpei Kimura, Akihiro Tsuruno, Takahiro Izumi, Yuji Shibuya, Hayaki Teramoto, Shoei Teshima, Manabu Hasegawa, Michiyasu Yamamoto
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Publication number: 20190084094Abstract: An aluminum alloy clad material includes: a core material; and a sacrificial anode material layer clad on one surface or both surfaces of the core material. Each of the core material and the sacrificial anode material layer has a predetermined composition. In the core material, the number density of an Al—Mn-based intermetallic compound having an equivalent circle diameter of 0.1 ?m or more is 1.0×105 particles/mm2 or more, and the number density of Al2Cu having an equivalent circle diameter of 0.1 ?m or more is 1.0×105 particles/mm2 or less. In the sacrificial anode material layer, the number density of a Mg—Si-based crystallized product having an equivalent circle diameter of 0.1 to 5.0 ?m is 100 to 150,000 particles/mm2, and the number density of a Mg—Si-based crystallized product having an equivalent circle diameter of more than 5.0 ?m and 10.0 ?m or less is 5 particles/mm2 or less.Type: ApplicationFiled: March 30, 2017Publication date: March 21, 2019Inventors: Hayaki Teramoto, Manabu Hasegawa, Michiyasu Yamamoto, Yosuke Uchida, Wataru Narita, Yoshihiko Kyou, Atsushi Fukumoto, Yoshiyuki Ooya
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Patent number: 9897395Abstract: A tank includes a tank wall that has an opening, which is configured into a generally rectangular form that extends in a longitudinal direction and a lateral direction while a cross section of the tank wall, which is perpendicular to the longitudinal direction of the opening, is curved, and a tank foot is formed to extend all around the opening of the tank wall. A gate position is placed in a longitudinal center portion of one side surface of the tank foot, which extends in the longitudinal direction of the tank wall.Type: GrantFiled: January 23, 2013Date of Patent: February 20, 2018Assignee: DENSO CORPORATIONInventors: Shingo Oono, Michiyasu Yamamoto, Yoshinori Ishihara, Masaei Mitomi
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Patent number: 9751143Abstract: An aluminum alloy brazing sheet for heat exchangers has a core, a sacrificial material formed on one side of the core, and a brazing filler metal formed on the other side of the core. The core is made of an aluminum alloy containing Si, Cu, Mn, and Al. The sacrificial material is made of an aluminum alloy containing Si, Zn, Mg, and Al. The brazing filler metal is made of an aluminum alloy. The aluminum alloy brazing sheet for heat exchangers has a work hardening exponent n of not less than 0.05. The core has an average crystal grain size of not more than 10 ?m in a cross-section. The aluminum alloy brazing sheet for heat exchangers has excellent strength and corrosion resistance even when it is formed into a thin material and also has excellent high frequency weldability and weld cracking resistance during electric resistance welding.Type: GrantFiled: March 12, 2013Date of Patent: September 5, 2017Assignees: KOBE STEEL, LTD., DENSO CORPORATIONInventors: Shimpei Kimura, Toshiki Ueda, Takahiro Izumi, Haruyuki Konishi, Hayaki Teramoto, Osamu Hakamata, Michiyasu Yamamoto
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Publication number: 20170232561Abstract: Disclosed is an aluminum alloy brazing sheet including a core material, a brazing filler material provided on one surface of the core material and formed of an Al—Si based alloy, and a sacrificial anode material provided on the other surface of the core material, the brazing sheet having a thickness of less than 200 ?m, wherein the core material includes more than 1.5% by mass and 2.5% or less by mass of Cu, and 0.5 to 2.0% by mass of Mn, with the balance being Al and inevitable impurities, wherein the sacrificial anode material includes 2.0 to 10.0% by mass of Zn, an Mg content in the sacrificial anode material being restricted to 0.10% or less by mass, with the balance being Al and inevitable impurities, and wherein each of the brazing filler material and the sacrificial anode material has a thickness thereof in a range of 15 to 50 ?m, and the total of cladding rates of the brazing filler material and sacrificial anode material is 50% or less.Type: ApplicationFiled: September 28, 2015Publication date: August 17, 2017Applicants: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.), DENSO CORPORATIONInventors: Shimpei KIMURA, Akihiro TSURUNO, Takahiro IZUMI, Yuji SHIBUYA, Hayaki TERAMOTO, Michiyasu YAMAMOTO, Manabu HASEGAWA, Shoei TESHIMA
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Publication number: 20170173740Abstract: The present invention provides a brazing sheet formed of an aluminum alloy which exhibits excellent post-brazing strength, corrosion resistance and brazability even though its thickness is less than 200 ?m. Disclosed is a brazing sheet formed of an aluminum alloy including a core layer, a brazing filler layer provided on one side of the core layer and formed of an Al—Si based alloy, and a sacrificial layer provided on the other side of the core layer, the brazing sheet having a thickness of less than 200 ?m, wherein the core layer includes Cu: more than 1.5% by mass and 2.5% or less by mass and Mn: 0.5 to 2.0% by mass, with the balance being Al and inevitable impurities, the sacrificial layer includes Zn: 2.0 to 7.0% by mass and Mg: more than 0.10% by mass and 3.Type: ApplicationFiled: February 9, 2015Publication date: June 22, 2017Applicants: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.), DENSO CORPORATIONInventors: Shimpei KIMURA, Akihiro TSURUNO, Takahiro IZUMI, Yuji SHIBUYA, Hayaki TERAMOTO, Shoei TESHIMA, Manabu HASEGAWA, Michiyasu YAMAMOTO
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Publication number: 20160187079Abstract: An aluminum alloy fin material for a heat exchanger in the present invention comprises an aluminum alloy having a composition containing Mn: 1.2 to 2.0%, Cu: 0.05 to 0.20%, Si: 0.5 to 1.30%, Fe: 0.05 to 0.5%, and Zn: 1.0 to 3.0% by mass and a remainder comprising Al and an unavoidable impurity, further containing one or two or more of Ti: 0.01 to 0.20%, Cr: 0.01 to 0.20% and Mg: 0.01 to 0.20% by mass as desired, and, after heating in brazing, has a tensile strength of 140 MPa or more, a proof stress of 50 MPa or more, an electrical conductivity of 42% IACS or more, an average grain diameter of 150 ?m or more and less than 700 ?m, and a potential of ?800 mV or more and ?720 mV or less.Type: ApplicationFiled: December 28, 2015Publication date: June 30, 2016Applicants: MITSUBISHI ALUMINUM CO., LTD., DENSO CORPORATIONInventors: Shigeki NAKANISHI, Shohei IWAO, Masakazu EDO, Hayaki TERAMOTO, Manabu HASEGAWA, Michiyasu YAMAMOTO, Shoei TESHIMA
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Patent number: 9115934Abstract: A heat exchanger, such as a radiator, may transfer heat from a liquid and employ a first header tank, a second header tank, a plurality of tubes fluidly joining the first and second header tanks, and a baffle within one of the first or second header tanks. The baffle may be located in a header tank positioned substantially parallel or perpendicular to a surface upon which a vehicle employing the hear exchanger rests. The baffle may be a wall defining only one slot, a wall defining only one slot that is open through one side of the wall, a wall that defines a plurality of slots, or a wall that defines a plurality of holes. The heat exchanger may further employ fluidly isolated first and second tube and fin sections each defining a self-contained flow path for cooling different liquids. The baffle may slow coolant flow in a flow path.Type: GrantFiled: March 15, 2010Date of Patent: August 25, 2015Assignees: DENSO International America, Inc., DENSO CORPORATIONInventors: Christopher Kopchick, Michiyasu Yamamoto
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Publication number: 20150233652Abstract: A heat exchanger includes tubes and a header tank. The tubes are arranged in parallel with each other, and fluid flows in the tubes. The header tank is disposed at end portions of the tubes in a longitudinal direction of the tubes and extends in a direction in which the tubes are arranged in parallel with each other to communicate with the tubes. The header tank includes a core plate, a resin tank main body part, and a resiliently-deformable sealing member. The tubes are joined to the core plate. The tank main body part is fixed to the core plate. The core plate includes a receiving part at which the sealing member is disposed. The tank main body part is fixed to the core plate with the sealing member clamped between an end part of the tank main body part on the core plate-side and the receiving part. The receiving part is disposed on a farther side from the tubes in the longitudinal direction of the tubes than the end portions of the tubes in the longitudinal direction of the tubes.Type: ApplicationFiled: October 2, 2013Publication date: August 20, 2015Inventors: Michiyasu Yamamoto, Takahiro Uno, Kazutaka Suzuki
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Publication number: 20150014324Abstract: A tank includes a tank wall that has an opening, which is configured into a generally rectangular form that extends in a longitudinal direction and a lateral direction while a cross section of the tank wall, which is perpendicular to the longitudinal direction of the opening, is curved, and a tank foot is formed to extend all around the opening of the tank wall. A gate position is placed in a longitudinal center portion of one side surface of the tank foot, which extends in the longitudinal direction of the tank wall.Type: ApplicationFiled: January 23, 2013Publication date: January 15, 2015Inventors: Shingo Oono, Michiyasu Yamamoto, Yoshinori Ishihara, Masaei Mitomi
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Publication number: 20130260175Abstract: An aluminum alloy brazing sheet for heat exchangers has a core, a sacrificial material formed on one side of the core, and a brazing filler metal formed on the other side of the core. The core is made of an aluminum alloy containing Si, Cu, Mn, and Al. The sacrificial material is made of an aluminum alloy containing Si, Zn, Mg, and Al. The brazing filler metal is made of an aluminum alloy. The aluminum alloy brazing sheet for heat exchangers has a work hardening exponent n of not less than 0.05. The core has an average crystal grain size of not more than 10 ?m in a cross-section. The aluminum alloy brazing sheet for heat exchangers has excellent strength and corrosion resistance even when it is formed into a thin material and also has excellent high frequency weldability and weld cracking resistance during electric resistance welding.Type: ApplicationFiled: March 12, 2013Publication date: October 3, 2013Applicants: DENSO CORPORATION, KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)Inventors: Shimpei KIMURA, Toshiki Ueda, Takahiro Izumi, Haruyuki Konishi, Hayaki Teramoto, Osamu Hakamata, Michiyasu Yamamoto
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Publication number: 20110220318Abstract: A heat exchanger, such as a radiator, may transfer heat from a liquid and employ a first header tank, a second header tank, a plurality of tubes fluidly joining the first and second header tanks, and a baffle within one of the first or second header tanks. The baffle may be located in a header tank positioned substantially parallel or perpendicular to a surface upon which a vehicle employing the hear exchanger rests. The baffle may be a wall defining only one slot, a wall defining only one slot that is open through one side of the wall, a wall that defines a plurality of slots, or a wall that defines a plurality of holes. The heat exchanger may further employ fluidly isolated first and second tube and fin sections each defining a self-contained flow path for cooling different liquids. The baffle may slow coolant flow in a flow path.Type: ApplicationFiled: March 15, 2010Publication date: September 15, 2011Applicants: DENSO International America, Inc., DENSO CorporationInventors: Christopher Kopchick, Michiyasu Yamamoto
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Publication number: 20110000642Abstract: A heat exchanger comprising: a core portion including a plurality of tubes; a pair of header tanks communicating with the tubes; and a pair of inserts arranged substantially parallel to the length of the tubes, and in such a manner as to contact the core portion at the ends of the core portion to transfer the heat from the core portion, and having the ends thereof supported on the header tanks; wherein a stress absorber to absorb the stress generated along the length of each insert is formed in the insert; wherein the stress absorber is formed over each insert from the upstream side to the downstream side in the air flow; and wherein the stress absorber is arranged in such a manner that the most upstream end and the most downstream end thereof in the air flow are not superposed, one on the other, along the direction of air flow.Type: ApplicationFiled: September 7, 2010Publication date: January 6, 2011Applicant: DENSO CORPORATIONInventors: Hirokazu Hirose, Hiroyuki Osakabe, Hajime Sugito, Michiyasu Yamamoto, Takahiro Uno
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Publication number: 20080047689Abstract: A heat exchanger comprising: a core portion including a plurality of tubes; a pair of header tanks communicating with the tubes; and a pair of inserts arranged substantially parallel to the length of the tubes, and in such a manner as to contact the core portion at the ends of the core portion to transfer the heat from the core portion, and having the ends thereof supported on the header tanks; wherein a stress absorber to absorb the stress generated along the length of each insert is formed in the insert; wherein the stress absorber is formed over each insert from the upstream side to the downstream side in the air flow; and wherein the stress absorber is arranged in such a manner that the most upstream end and the most downstream end thereof in the air flow are not superposed, one on the other, along the direction of air flow.Type: ApplicationFiled: October 16, 2007Publication date: February 28, 2008Applicant: DENSO CorporationInventors: Hirokazu Hirose, Yoshihiko Kamiya, Toshihide Ninagawa, Hiroyuki Osakabe, Hajime Sugito, Michiyasu Yamamoto, Takahiro Uno
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Patent number: 7140424Abstract: A tube inside passage height (Tr) is set within a range of 0.35–0.8 mm. Thereby, sum of radiation performance reduction due to pressure loss inside tube and radiation performance reduction due to air flow resistance is reduced, thereby attaining high radiation performance. Especially, when the tube inside passage height (Tr) is set within a range of 0.5–0.7 mm, the radiation performance is further improved.Type: GrantFiled: March 14, 2005Date of Patent: November 28, 2006Assignee: Denso CorporationInventors: Ryouichi Sanada, Michiyasu Yamamoto, Yoshifumi Aki
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Patent number: 7036568Abstract: A heat-exchanging plate member has a pair of heat-exchanging plates, each of which has projection ribs and fluid passage forming portions arranged alternately. The pair of plates are connected to each other in a manner that the projection ribs formed in the plates, respectively, face outwardly with each other, and the projection ribs formed in one of the plates are connected to the fluid passage forming portions formed in the other of the plates, respectively, at a temperature where the strength of material is not lowered in a connecting process.Type: GrantFiled: April 15, 2003Date of Patent: May 2, 2006Assignee: DENSO CorporationInventors: Yoshiyuki Yamauchi, Michiyasu Yamamoto, Shoei Teshima, Masaki Shimizu, Hiroshi Ogawa