Patents by Inventor Tsuyoshi Maeda

Tsuyoshi Maeda 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).

  • Patent number: 11002495
    Abstract: A distributor includes a first member having a plurality of first through holes spaced apart from each other in the first direction, a second member having a first groove facing each of the plurality of first through holes, and a third member having at least one second groove facing at least one of the plurality of first through holes. The first groove extends in the first direction. The first space inside a groove is connected to a second space inside at least one second groove through a third space inside each of the plurality of first through holes. The third space is higher in flow path resistance than the first space and the second space.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: May 11, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Ryota Akaiwa, Shinya Higashiiue, Yuta Komiya, Tsuyoshi Maeda
  • Publication number: 20210108864
    Abstract: An object is to provide a heat exchanger, a heat exchanger unit, and a refrigeration cycle apparatus in which frost melt water is inhibited from reaching an upper surface of a header and the heat exchange performance and the reliability are improved. The invention includes: a plurality of heat transfer tubes arranged in parallel with each other; a fin connected to at least one of the plurality of heat transfer tubes; and a header having a header end surface being a surface along a direction in which the plurality of heat transfer tubes are arranged in parallel with each other, the header being connected to one end portions of the plurality of heat transfer tubes.
    Type: Application
    Filed: July 11, 2018
    Publication date: April 15, 2021
    Inventors: Akira YATSUYANAGI, Akira ISHIBASHI, Tsuyoshi MAEDA, Shin NAKAMURA, Ryuichi NAGATA
  • Patent number: 10975475
    Abstract: The present invention provides an electroless gold plating bath having excellent plating bath stability without containing a cyanide compound under long term plating bath heating time. An electroless gold plating bath of the present invention solving above problems includes: a water-soluble gold salt; a reducing agent; and a phosphine compound represented by a following formula (1) wherein R1, R2, and R3 represent identically or differently either a phenyl group, or an alkyl group having 1 to 5 carbons, and at least one of the phenyl group or the alkyl group is substituted by a sulfonate group or its salt, a cyano group, or a carboxy group or its salt.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: April 13, 2021
    Assignee: C. UYEMURA & CO., LTD.
    Inventors: Yohei Kaneko, Naoshi Nishimura, Tsuyoshi Maeda, Katsuhisa Tanabe
  • Patent number: 10941985
    Abstract: A heat exchanger includes a plurality of flat tubes provided to extend in a first direction, and a plurality of plate-shaped fins having respective surfaces extending in a second direction. The surface has a windward edge and a leeward edge. The plurality of flat tubes include a first flat tube disposed most windward in the second direction, and a second flat tube spaced apart from the first flat tube and disposed most leeward in the second direction. In the second direction, a distance between the leeward edge and a center of a flat shape of the second flat tube is at least one-third of a width between the windward edge and the leeward edge.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: March 9, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Daisuke Ito, Shin Nakamura, Yuki Ugajin, Tsuyoshi Maeda
  • Patent number: 10921796
    Abstract: A system display control unit causes a display unit to display a simulated system screen. A symbol selection unit receives a selection of a symbol from a user. A model display control unit causes the display unit to display a plant model in which a component model corresponding to the component represented by the selected symbol is emphasized. A model selection unit receives a selection of a component model from the user. A component information display control unit causes the display unit to display information about the component represented by the selected model.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: February 16, 2021
    Assignee: MITSUBISHI POWER, LTD.
    Inventors: Kenshi Sakamoto, Kazuhito Ohashi, Hiroyuki Matsuoka, Fumiyuki Tora, Tsuyoshi Maeda, Maho Fujiyama
  • Patent number: 10914499
    Abstract: An outdoor heat exchanger of an outdoor unit includes a main heat exchanger portion and an auxiliary heat exchanger portion. In the main heat exchanger portion, refrigerant path groups are formed. In the auxiliary heat exchanger portion, refrigerant paths are formed. The refrigerant path in the auxiliary heat exchanger portion, which is located closest to the main heat exchanger portion, is connected to the refrigerant path group in the main heat exchanger portion, which is disposed in a region where a wind velocity of the outdoor air passing through the main heat exchanger portion is relatively high. In addition, the refrigerant path is connected to the refrigerant path group. The refrigerant path is connected to the refrigerant path group. The refrigerant path is connected to the refrigerant path group.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: February 9, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shin Nakamura, Tsuyoshi Maeda, Akira Ishibashi
  • Publication number: 20210018232
    Abstract: An outdoor heat exchanger includes: a main heat exchange area; a sub heat exchange area; and a connecting pipe and a connecting pipe interconnecting the main heat exchange area and the sub heat exchange area. The main heat exchange area has a main heat exchange channel and a main heat exchange channel. The sub heat exchange area has a sub heat exchange channel, a sub heat exchange channel, and a sub heat exchange channel. The connecting pipe connects the sub heat exchange channel and the sub heat exchange channel to the main heat exchange channel while the sub heat exchange channels are joined together. The connecting pipe interconnects the sub heat exchange channel and the main heat exchange channel.
    Type: Application
    Filed: January 18, 2018
    Publication date: January 21, 2021
    Inventors: Ryuichi NAGATA, Tsuyoshi MAEDA, Shin NAKAMURA, Akira ISHIBASHI
  • Publication number: 20210018233
    Abstract: A heat exchanger includes: a plurality of flat tubes arranged in a height direction of the heat exchanger; a connection portion in which a plurality of connection spaces are provided as spaces with which ends of the plurality of flat tubes are connected; and a refrigerant distributor connected to each of the plurality of connection spaces. The flat tubes each have a first side end portion located on a windward side, a second side end portion located on a leeward side, and a plurality of refrigerant passages arranged between the first and second side end portions. Each flat tube is inclined such that in the height direction, the position of the first side end portion is lower than the position of the second side end portion.
    Type: Application
    Filed: May 1, 2018
    Publication date: January 21, 2021
    Inventors: Shinya HIGASHIIUE, Ryota AKAIWA, Tsuyoshi MAEDA, Atsushi MOCHIZUKI
  • Publication number: 20210003325
    Abstract: A refrigeration cycle apparatus includes a refrigerant circuit including a compressor, a condenser, a pressure reducing device, and an evaporator connected by a refrigerant pipe. A refrigerant including a refrigerant having flammability is used as refrigerant circulating in the refrigerant circuit. The evaporator and the pressure reducing device are accommodated in a unit. The evaporator is disposed in the unit in such a manner that a linear distance between a refrigerant inlet of the evaporator and a refrigerant outlet of the pressure reducing device is shorter than a linear distance between a refrigerant outlet of the evaporator and the refrigerant outlet of the pressure reducing device.
    Type: Application
    Filed: May 17, 2018
    Publication date: January 7, 2021
    Inventors: Tsuyoshi MAEDA, Akira ISHIBASHI, Daisuke ITO
  • Publication number: 20200340120
    Abstract: The purpose of the present invention is to provide a gold plating method and a plating film for preventing a decrease of wire bonding characteristic by a thermal hysteresis by implementation and else. In addition, the purpose of the present invention is to provide a gold plating method and a plating film for preventing a decrease of wire bonding characteristic by a thermal hysteresis by implementation and else, even when a film thickness of a gold plating film is thin. A gold plating method for wire bonding connection by plating using a silver catalyst on a copper or copper alloy film, comprising: a silver catalyst forming step for forming a silver film as the silver catalyst for forming a palladium film; a palladium film forming step for forming the palladium film on the silver catalyst; a gold plating film forming step for forming a gold plating film on the palladium film, wherein a film thickness of the silver film is 0.05 ?m to 0.5 ?m.
    Type: Application
    Filed: April 9, 2020
    Publication date: October 29, 2020
    Inventors: Tsuyoshi Maeda, Katsuhisa Tanabe, Naoshi Nishimura, Yohei Kaneko
  • Publication number: 20200326111
    Abstract: A heat exchanger includes a fin having a first through hole into which a first heat transfer tube is inserted and a second through hole into which a second heat transfer tube is inserted and including a first end portion and a second end portion, in which a virtual straight line passing through end portions on the first end portion side of the first heat transfer tube and the second heat transfer tube is a first virtual straight line, a virtual straight line passing through end portions on the second end portion side of the first heat transfer tube and the second heat transfer tube is a second virtual straight line, a region between the first end portion and the first virtual straight line is a first drainage region, a region between the second end portion and the second virtual straight line is a second drainage region, and a region enclosed by the first heat transfer tube, the second heat transfer tube, the first virtual straight line and the second virtual straight line is a water introducing region, a fir
    Type: Application
    Filed: May 11, 2017
    Publication date: October 15, 2020
    Inventors: Tsuyoshi MAEDA, Shin NAKAMURA, Akira YATSUYANAGI
  • Publication number: 20200318239
    Abstract: An object of the present invention is to provide an electroless Pd plating solution which enables formation of a Pd plating film forming a plating film having excellent wire bondability even after a high-temperature thermal history. An electroless Pd plating solution of the present invention includes: a Palladium compound, a reducing agent, a complexing agent, and at least one selected from a group consisting of Ge and rare earth element.
    Type: Application
    Filed: October 3, 2018
    Publication date: October 8, 2020
    Applicant: C. Uyemura & Co., Ltd.
    Inventors: Tsuyoshi MAEDA, Katsuhisa TANABE, Tomohiro KAWAHARA
  • Publication number: 20200283906
    Abstract: The present invention provides an electroless gold plating bath having excellent plating bath stability without containing a cyanide compound under long term plating bath heating time. An electroless gold plating bath of the present invention solving above problems includes: a water-soluble gold salt; a reducing agent; and a phosphine compound represented by a following formula (1) wherein R1, R2, and R3 represent identically or differently either a phenyl group, or an alkyl group having 1 to 5 carbons, and at least one of the phenyl group or the alkyl group is substituted by a sulfonate group or its salt, a cyano group, or a carboxy group or its salt.
    Type: Application
    Filed: March 2, 2020
    Publication date: September 10, 2020
    Applicant: C. Uyemura & Co., Ltd.
    Inventors: Yohei KANEKO, Naoshi NISHIMURA, Tsuyoshi MAEDA, Katsuhisa TANABE
  • Publication number: 20200256626
    Abstract: A heat exchanger includes: a plate-like fin having one end and an other end in a first direction; and a first heat transfer tube and a second heat transfer tube that each extends through the fin and that are adjacent to each other in a second direction. A portion to which the fin and the first heat transfer tube are connected and a clearance portion that separates between the fin and the first heat transfer tube are disposed between the fin and the first heat transfer tube. The clearance portion is disposed at one end side in the first direction relative to an imaginary center line that passes through a center of the first heat transfer tube in a long side direction and that extends along a short side direction.
    Type: Application
    Filed: October 16, 2017
    Publication date: August 13, 2020
    Inventors: Shin NAKAMURA, Tsuyoshi MAEDA, Akira ISHIBASHI, Tomoyuki HAYASHI
  • Publication number: 20200248312
    Abstract: An object of the present invention is to provide an electroless Pd plating solution which enables formation of a Pd plating film forming a plating film having excellent wire bondability even after a high-temperature thermal history. An electroless Pd plating solution of the present invention solved above problems, the solution includes a Palladium compound, at least one selected from a group consisting of a hypophosphorous acid compound and a phosphorous acid compound, at least one selected from the group consisting of an amine borane compound and a hydroboron compound, and a complexing agent.
    Type: Application
    Filed: October 3, 2018
    Publication date: August 6, 2020
    Applicant: C. Uyemura & Co., Ltd.
    Inventors: Tsuyoshi MAEDA, Katsuhisa TANABE, Shinsuke WADA
  • Publication number: 20200225651
    Abstract: A system display control unit causes a display unit to display a simulated system screen. A symbol selection unit receives a selection of a symbol from a user. A model display control unit causes the display unit to display a plant model in which a component model corresponding to the component represented by the selected symbol is emphasized. A model selection unit receives a selection of a component model from the user. A component information display control unit causes the display unit to display information about the component represented by the selected model.
    Type: Application
    Filed: February 13, 2017
    Publication date: July 16, 2020
    Inventors: Kenshi SAKAMOTO, Kazuhito OHASHI, Hiroyuki MATSUOKA, Fumiyuki TORA, Tsuyoshi MAEDA, Maho FUJIYAMA
  • Patent number: 10712104
    Abstract: A heat exchanger according to an embodiment of the invention includes a fin extending in the gravity direction and heat transfer pipes installed so as to intersect the fin. The heat transfer pipes are arranged in the gravity direction. The fin has a water guiding area disposed above and below each of the heat transfer pipes, and a water drainage area disposed adjacent to a side of each of the heat transfer pipes. The water guiding area has water guiding structures for guiding water to the water drainage area. The water drainage area has water drainage structures for guiding water in the gravity direction.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: July 14, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tsuyoshi Maeda, Akira Yatsuyanagi, Shin Nakamura
  • Publication number: 20200217588
    Abstract: Provided is a heat exchanger, including a plurality of heat exchange members arranged in a first direction so as to be spaced apart from each other. Each of the plurality of heat exchange members includes: a heat transfer pipe extending in a second direction intersecting with the first direction; and a heat transfer plate provided to the heat transfer pipe along the second direction. The heat transfer plate includes extending portions extending away from the heat transfer pipe in a third direction intersecting with each of the first direction and the second direction. The heat transfer plate is formed separately from the heat transfer pipe.
    Type: Application
    Filed: August 3, 2017
    Publication date: July 9, 2020
    Inventors: Yuta KOMIYA, Shinya HIGASHIIUE, Tsuyoshi MAEDA, Ryota AKAIWA, Shigeyoshi MATSUI, Akira ISHIBASHI, Eiji HIHARA, Chaobin DANG, Jiyang LI
  • Publication number: 20200217590
    Abstract: In a heat exchanger, each of a plurality of heat exchange members includes: a main body portion including a heat transfer pipe; and extending portions provided to the main body. The extending portions extend from ends of the main body portion in a third direction. When a dimension of the main body portion in the third direction is represented by La, a dimension of the extending portions in the third direction is represented by Lf, a dimension of a wall thickness of each of the heat transfer pipes is represented by tp, and a thickness dimension of each of the extending portions is represented by Tf, relationships: Lf/La?1 and Tf?tp are satisfied.
    Type: Application
    Filed: August 3, 2017
    Publication date: July 9, 2020
    Inventors: Tsuyoshi MAEDA, Shinya HIGASHIIUE, Akira ISHIBASHI, Ryuichi NAGATA, Eiji HIHARA, Chaobin DANG, Jiyang LI
  • Publication number: 20200166253
    Abstract: Provided is a heat exchanger, including: a refrigerant distributor including: a gas-liquid separating portion having a function of separating a gas-liquid refrigerant mixture into a liquid refrigerant and a gas refrigerant; and a distributing portion provided to the gas-liquid separating portion. A plurality of heat transfer pipes connected to the distributing portion. The plurality of heat transfer pipes are arranged side by side in a first direction, and extend along a second direction intersecting with the first direction. When the refrigerant distributor is viewed along a direction orthogonal to each of the first direction and the second direction, a first space forming portion overlaps a region of the plurality of heat transfer pipes. When the refrigerant distributor and the heat transfer pipes are viewed along the first direction, a clearance is present between the gas-liquid separating portion and the heat transfer pipes.
    Type: Application
    Filed: August 3, 2017
    Publication date: May 28, 2020
    Inventors: Shinya HIGASHIIUE, Tsuyoshi MAEDA, Akira ISHIBASHI, Ryuichi NAGATA, Eiji HIHARA, Chaobin DANG, Jiyang LI