Patents by Inventor Ryuichi Saito

Ryuichi Saito 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).

  • Publication number: 20190259606
    Abstract: A pattern-forming method includes forming a first film above a material to be processed, processing the first film into a pattern to be formed in the material to be processed, providing a second film on the first film and the material to be processed, supplying a precursor containing at least one of a metal material or a semiconductor material to the second film, removing the first film, and processing the material to be processed using the second film impregnated with at least one of the metal material and the semiconductor material, as a mask.
    Type: Application
    Filed: August 30, 2018
    Publication date: August 22, 2019
    Inventors: Ryosuke YAMAMOTO, Ryuichi SAITO, Seiji MORITA, Ryoichi SUZUKI, Takeharu MOTOKAWA, Shinichi ITO, Soichi INOUE
  • Publication number: 20190182993
    Abstract: Technology leading to a size reduction in a power conversion apparatus comprising a cooling function and technology relating to enhancing productivity and enhancing reliability necessary for commercial production are provided. Series circuits comprising an upper arm and lower arm of an inverter circuit are built in a single semiconductor module 500. The semiconductor module has cooling metal on two sides. An upper arm semiconductor chip and lower arm semiconductor chip are wedged between the cooling metals. The semiconductor module is inserted inside a channel case main unit 214. A DC positive electrode terminal 532, a DC negative electrode terminal 572, and an alternating current terminal 582 of a semiconductor chip are disposed in the semiconductor module. The DC terminals 532 and 572 are electrically connected with a terminal of a capacitor module. The alternating current terminal 582 is electrically connected with a motor generator via an AC connector.
    Type: Application
    Filed: February 4, 2019
    Publication date: June 13, 2019
    Inventors: Takeshi TOKUYAMA, Kinya NAKATSU, Ryuichi SAITO
  • Patent number: 10238015
    Abstract: Technology leading to a size reduction in a power conversion apparatus comprising a cooling function and technology relating to enhancing productivity and enhancing reliability necessary for commercial production are provided. Series circuits comprising an upper arm and lower arm of an inverter circuit are built in a single semiconductor module 500. The semiconductor module has cooling metal on two sides. An upper arm semiconductor chip and lower arm semiconductor chip are wedged between the cooling metals. The semiconductor module is inserted inside a channel case main unit 214. A DC positive electrode terminal 532, a DC negative electrode terminal 572, and an alternating current terminal 582 of a semiconductor chip are disposed in the semiconductor module. The DC terminals 532 and 572 are electrically connected with a terminal of a capacitor module. The alternating current terminal 582 is electrically connected with a motor generator via an AC connector.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: March 19, 2019
    Assignee: HITACHI, LTD.
    Inventors: Takeshi Tokuyama, Kinya Nakatsu, Ryuichi Saito
  • Publication number: 20190080887
    Abstract: In one embodiment, a method of manufacturing a semiconductor device includes forming a first film on a substrate. The method further includes housing the substrate provided with the first film in a chamber, and introducing a first gas into the chamber. The method further includes generating plasma discharge of the first gas in the chamber or applying radiation to the first gas in the chamber. The method further includes introducing a second gas containing a metal component into the chamber to cause the metal component to infiltrate into the first film after the generation of the plasma discharge or the application of the radiation is started.
    Type: Application
    Filed: February 8, 2018
    Publication date: March 14, 2019
    Applicant: Toshiba Memory Corporation
    Inventors: Ryuichi Saito, Seiji Morita, Ryosuke Yamamoto
  • Publication number: 20170215304
    Abstract: An electric power conversion apparatus includes a channel case in which a cooling water channel is formed; a double side cooling semiconductor module that has an upper and lower arms series circuit of an inverter circuit; a capacitor module; a direct current connector; and an alternate current connector. The semiconductor module includes first and second heat dissipation metals whose outer surfaces are heat dissipation surfaces, the upper and lower arms series circuit is disposed tightly between the first heat dissipation metal and the second heat dissipation metal, and the semiconductor module further includes a direct current positive terminal, a direct current negative terminal, and an alternate current terminal which protrude to outside. The channel case is provided with the cooling water channel which extends from a cooling water inlet to a cooling water outlet, and a first opening which opens into the cooling water channel.
    Type: Application
    Filed: April 10, 2017
    Publication date: July 27, 2017
    Inventors: Takeshi TOKUYAMA, Kinya NAKATSU, Ryuichi SAITO, Keisuke HORIUCHI, Toshiya SATOH, Hideki MIYAZAKI
  • Patent number: 9648791
    Abstract: An electric power conversion apparatus includes a channel case in which a cooling water channel is formed; a double side cooling semiconductor module that has an upper and lower arms series circuit of an inverter circuit; a capacitor module; a direct current connector; and an alternate current connector. The semiconductor module includes first and second heat dissipation metals whose outer surfaces are heat dissipation surfaces, the upper and lower arms series circuit is disposed tightly between the first heat dissipation metal and the second heat dissipation metal, and the semiconductor module further includes a direct current positive terminal, a direct current negative terminal, and an alternate current terminal which protrude to outside. The channel case is provided with the cooling water channel which extends from a cooling water inlet to a cooling water outlet, and a first opening which opens into the cooling water channel.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: May 9, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Takeshi Tokuyama, Kinya Nakatsu, Ryuichi Saito, Keisuke Horiuchi, Toshiya Satoh, Hideki Miyazaki
  • Publication number: 20170105321
    Abstract: Technology leading to a size reduction in a power conversion apparatus comprising a cooling function and technology relating to enhancing productivity and enhancing reliability necessary for commercial production are provided. Series circuits comprising an upper arm and lower arm of an inverter circuit are built in a single semiconductor module 500. The semiconductor module has cooling metal on two sides. An upper arm semiconductor chip and lower arm semiconductor chip are wedged between the cooling metals. The semiconductor module is inserted inside a channel case main unit 214. A DC positive electrode terminal 532, a DC negative electrode terminal 572, and an alternating current terminal 582 of a semiconductor chip are disposed in the semiconductor module. The DC terminals 532 and 572 are electrically connected with a terminal of a capacitor module. The alternating current terminal 582 is electrically connected with a motor generator via an AC connector.
    Type: Application
    Filed: December 22, 2016
    Publication date: April 13, 2017
    Inventors: Takeshi TOKUYAMA, Kinya NAKATSU, Ryuichi SAITO
  • Patent number: 9609789
    Abstract: Technology leading to a size reduction in a power conversion apparatus comprising a cooling function and technology relating to enhancing productivity and enhancing reliability necessary for commercial production are provided. Series circuits comprising an upper arm and lower arm of an inverter circuit are built in a single semiconductor module 500. The semiconductor module has cooling metal on two sides. An upper arm semiconductor chip and lower arm semiconductor chip are wedged between the cooling metals. The semiconductor module is inserted inside a channel case main unit 214. A DC positive electrode terminal 532, a DC negative electrode terminal 572, and an alternating current terminal 582 of a semiconductor chip are disposed in the semiconductor module. The DC terminals 532 and 572 are electrically connected with a terminal of a capacitor module. The alternating current terminal 582 is electrically connected with a motor generator via an AC connector.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: March 28, 2017
    Assignee: HITACHI, LTD.
    Inventors: Takeshi Tokuyama, Kinya Nakatsu, Ryuichi Saito
  • Patent number: 9565791
    Abstract: Technology leading to a size reduction in a power conversion apparatus comprising a cooling function and technology relating to enhancing productivity and enhancing reliability necessary for commercial production are provided. Series circuits comprising an upper arm and lower arm of an inverter circuit are built in a single semiconductor module 500. The semiconductor module has cooling metal on two sides. An upper arm semiconductor chip and lower arm semiconductor chip are wedged between the cooling metals. The semiconductor module is inserted inside a channel case main unit 214. A DC positive electrode terminal 532, a DC negative electrode terminal 572, and an alternating current terminal 582 of a semiconductor chip are disposed in the semiconductor module. The DC terminals 532 and 572 are electrically connected with a terminal of a capacitor module. The alternating current terminal 582 is electrically connected with a motor generator via an AC connector.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: February 7, 2017
    Assignee: HITACHI, LTD.
    Inventors: Takeshi Tokuyama, Kinya Nakatsu, Ryuichi Saito
  • Patent number: 9433134
    Abstract: A power semiconductor module includes a first package having an upper arm circuit section, a second package having a lower arm circuit section, a metal case having a storage space to store the first package and the second package and an opening connecting with the storage space, and an intermediate connecting conductor to couple the upper arm circuit section with the lower arm circuit section; the case includes a first radiating section and a second radiating section facing the first radiating section through the storage space; the first package is arranged so that the arrangement direction of the first and second packages may be parallel to the respective surfaces facing the first and second radiating sections; and the intermediate connecting conductor couples an emitter side terminal extending from the first package with a collector side terminal extending from the second package in the storage space.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: August 30, 2016
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Takeshi Tokuyama, Kinya Nakatsu, Ryuichi Saito, Toshiya Satoh, Tokihito Suwa
  • Publication number: 20160187777
    Abstract: A composition includes a metal compound and a solvent. The metal compound includes: a plurality of metal atoms of titanium, tantalum, zirconium, tungsten or a combination thereof; oxygen atoms each crosslinking the metal atoms; and polydentate ligands each coordinating to the metal atom. An absolute molecular weight of the metal compound as determined by static light scattering is no less than 8,000 and no greater than 50,000. A pattern-forming method includes applying the composition on an upper face side of a substrate to form an inorganic film. A resist pattern is formed on an upper face side of the inorganic film. The inorganic film and the substrate are dry-etched, by each separate etching operation, using the resist pattern as a mask such that the substrate has a pattern.
    Type: Application
    Filed: March 9, 2016
    Publication date: June 30, 2016
    Applicant: JSR CORPORATION
    Inventors: Hisashi NAKAGAWA, Ryuichi SAITO, Kenji FUJITA, Shunsuke KURITA, Tatsuya SAKAI
  • Patent number: 9210834
    Abstract: The object is to provide a power converter which is capable of minimizing an extent to which the power converter components other than the semiconductor module are thermally affected by the heat originating from the semiconductor module. The semiconductor modules constituting a main circuit for power conversion; a capacitor electrically connected to the main circuit; drive circuits that provide the main circuit with a drive signal used in power conversion operation; a control circuit that provides the drive circuit with a control signal used to prompt the drive circuit to provide the drive signal. Within a casing, a cooling chamber including a coolant passage is formed, and a chamber wall of the cooling chamber is formed with a thermally conductive material. At least the semiconductor modules are housed inside the cooling chamber, and at least the capacitor and the control circuit are disposed outside the cooling chamber.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 8, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Kinya Nakatsu, Takayoshi Nakamura, Ryuichi Saito, Takashi Suga, Hiroki Funato
  • Publication number: 20150349656
    Abstract: An electric power conversion apparatus includes a channel case in which a cooling water channel is formed; a double side cooling semiconductor module that has an upper and lower arms series circuit of an inverter circuit; a capacitor module; a direct current connector; and an alternate current connector. The semiconductor module includes first and second heat dissipation metals whose outer surfaces are heat dissipation surfaces, the upper and lower arms series circuit is disposed tightly between the first heat dissipation metal and the second heat dissipation metal, and the semiconductor module further includes a direct current positive terminal, a direct current negative terminal, and an alternate current terminal which protrude to outside. The channel case is provided with the cooling water channel which extends from a cooling water inlet to a cooling water outlet, and a first opening which opens into the cooling water channel.
    Type: Application
    Filed: August 10, 2015
    Publication date: December 3, 2015
    Inventors: Takeshi TOKUYAMA, Kinya NAKATSU, Ryuichi SAITO, Keisuke HORIUCHI, Toshiya SATOH, Hideki MIYAZAKI
  • Publication number: 20150334019
    Abstract: In a network in which a plurality of communication terminals and at least one server are connected through at least one router, when a network controller, configured to control the network and having a control function of routing of the at least one router in the network and routing information of the at least one router the network, receives an event which changes a destination address of the at least one server, the network controller primarily controls routing information which does not affect a communication being connected and after the processing of changing the destination address has been completed, controls routing information which affects a communication during connecting.
    Type: Application
    Filed: May 6, 2015
    Publication date: November 19, 2015
    Inventors: Ryuichi SAITO, Kazuhiro KUSAMA, Mitsuru NAKAMURA
  • Publication number: 20150313040
    Abstract: The object is to provide a power converter which is capable of minimizing an extent to which the power converter components other than the semiconductor module are thermally affected by the heat originating from the semiconductor module. A casing houses: semiconductor modules constituting a main circuit for power conversion; a capacitor electrically connected to the main circuit; drive circuits that provide the main circuit with a drive signal used in power conversion operation; a control circuit that provides the drive circuit with a control signal used to prompt the drive circuit to provide the drive signal. Within the casing, a cooling chamber including a coolant passage is formed, and a chamber wall of the cooling chamber is formed with a thermally conductive material. At least the semiconductor modules are housed inside the cooling chamber, and at least the capacitor and the control circuit are disposed outside the cooling chamber.
    Type: Application
    Filed: July 6, 2015
    Publication date: October 29, 2015
    Inventors: Kinya NAKATSU, Takayoshi NAKAMURA, Ryuichi SAITO, Takashi SUGA, Hiroki FUNATO
  • Patent number: 9137932
    Abstract: An electric power conversion apparatus includes a channel case in which a cooling water channel is formed; a double side cooling semiconductor module that has an upper and lower arms series circuit of an inverter circuit; a capacitor module; a direct current connector; and an alternate current connector. The semiconductor module includes first and second heat dissipation metals whose outer surfaces are heat dissipation surfaces, the upper and lower arms series circuit is disposed tightly between the first heat dissipation metal and the second heat dissipation metal, and the semiconductor module further includes a direct current positive terminal, a direct current negative terminal, and an alternate current terminal which protrude to outside. The channel case is provided with the cooling water channel which extends from a cooling water inlet to a cooling water outlet, and a first opening which opens into the cooling water channel.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: September 15, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Takeshi Tokuyama, Kinya Nakatsu, Ryuichi Saito, Keisuke Horiuchi, Toshiya Satoh, Hideki Miyazaki
  • Publication number: 20150222196
    Abstract: An electric power conversion apparatus includes a channel case in which a cooling water channel is formed; a double side cooling semiconductor module that has an upper and lower arms series circuit of an inverter circuit; a capacitor module; a direct current connector; and an alternate current connector. The semiconductor module includes first and second heat dissipation metals whose outer surfaces are heat dissipation surfaces, the upper and lower arms series circuit is disposed tightly between the first heat dissipation metal and the second heat dissipation metal, and the semiconductor module further includes a direct current positive terminal, a direct current negative terminal, and an alternate current terminal which protrude to outside. The channel case is provided with the cooling water channel which extends from a cooling water inlet to a cooling water outlet, and a first opening which opens into the cooling water channel.
    Type: Application
    Filed: April 14, 2015
    Publication date: August 6, 2015
    Inventors: Takeshi TOKUYAMA, Kinya NAKATSU, Ryuichi SAITO, Keisuke HORIUCHI, Toshiya SATOH, Hideki MIYAZAKI
  • Patent number: 9042101
    Abstract: An electric power conversion apparatus includes a channel case in which a cooling water channel is formed; a double side cooling semiconductor module that has an upper and lower arms series circuit of an inverter circuit; a capacitor module; a direct current connector; and an alternate current connector. The semiconductor module includes first and second heat dissipation metals whose outer surfaces are heat dissipation surfaces, the upper and lower arms series circuit is disposed tightly between the first heat dissipation metal and the second heat dissipation metal, and the semiconductor module further includes a direct current positive terminal, a direct current negative terminal, and an alternate current terminal which protrude to outside. The channel case is provided with the cooling water channel which extends from a cooling water inlet to a cooling water outlet, and a first opening which opens into the cooling water channel.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: May 26, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Takeshi Tokuyama, Kinya Nakatsu, Ryuichi Saito, Keisuke Horiuchi, Toshiya Satoh, Hideki Miyazaki
  • Patent number: 8999442
    Abstract: Disclosed is a ruthenium film-forming material having a lower melting point and a higher vapor pressure that facilitates supply of the material onto a base and moreover enables a high-quality ruthenium film to be obtained. A ruthenium film-forming material includes a compound represented by general formula (1) below (wherein R1 is independently at each occurrence a hydrogen atom, a halogen atom, a hydrocarbon group having 1 to 4 carbon atoms or a halogenated hydrocarbon group having 1 to 4 carbon atoms; R2 is independently at each occurrence a halogenated hydrocarbon group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms or a halogenated alkoxy group having 1 to 4 carbon atoms, with the proviso that R1 and R2 are mutually differing groups; R3 is independently at each occurrence a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms; and L is an unsaturated hydrocarbon compound having 4 to 10 carbon atoms and having at least two double bonds).
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: April 7, 2015
    Assignee: JSR Corporation
    Inventors: Ryuichi Saito, Kang-go Chung, Hideki Nishimura, Tatsuya Sakai
  • Publication number: 20150070955
    Abstract: An electric power conversion apparatus includes a channel case in which a cooling water channel is formed; a double side cooling semiconductor module that has an upper and lower arms series circuit of an inverter circuit; a capacitor module; a direct current connector; and an alternate current connector. The semiconductor module includes first and second heat dissipation metals whose outer surfaces are heat dissipation surfaces, the upper and lower arms series circuit is disposed tightly between the first heat dissipation metal and the second heat dissipation metal, and the semiconductor module further includes a direct current positive terminal, a direct current negative terminal, and an alternate current terminal which protrude to outside. The channel case is provided with the cooling water channel which extends from a cooling water inlet to a cooling water outlet, and a first opening which opens into the cooling water channel.
    Type: Application
    Filed: November 18, 2014
    Publication date: March 12, 2015
    Applicant: HITACHI, LTD.
    Inventors: Takeshi TOKUYAMA, Kinya NAKATSU, Ryuichi SAITO, Keisuke HORIUCHI, Toshiya SATOH, Hideki MIYAZAKI