Patents by Inventor Yasushi Niwa
Yasushi Niwa 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: 8720421Abstract: The disclosure provides a turbo-charging apparatus for a vehicle engine, which includes a first and second turbocharger, an inter-turbine passage connecting a discharging port of a first turbocharger turbine with an introducing port of a second turbocharger turbine, a bypass passage connecting an introducing passage of the first turbocharger turbine with the inter-turbine passage, and a control valve for opening and closing the bypass passage. The inter-turbine passage extends substantially straight from the discharging port of the first turbocharger turbine toward the second turbocharger when viewed from a direction parallel to turbine shafts of the first and second turbochargers, which are arranged substantially parallel to each other, so that the inter-turbine passage connects with an outer circumferential part of the second turbocharger turbine so as to extend in a direction tangent to an outer circumference direction of the second turbocharger turbine.Type: GrantFiled: June 14, 2011Date of Patent: May 13, 2014Assignee: Mazda Motor CorporationInventors: Yasushi Niwa, Einosuke Suekuni, Atsuhiro Hatabu, Satoshi Nishizaka
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Patent number: 8615998Abstract: A first turbocharger comprises a first center housing and a first return passage. A second turbocharger comprises a second center housing and a second return passage. The first return passage joins the second return passage at a junction. The length of the second return passage from the second center housing to the junction is longer than that of the first return passage from the first center housing to the junction. A bellows-shaped vibration absorption portion is provided at the second return passage. The first return passage comprises a first upstream return passage and a first downstream return passage, and the first upstream and downstream return passages are connected to each other via the flexible hose.Type: GrantFiled: June 22, 2011Date of Patent: December 31, 2013Assignee: Mazda Motor CorporationInventors: Yasushi Niwa, Kazuaki Nishimura, Satoshi Nishizaka, Hiroaki Deguchi
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Patent number: 8590306Abstract: There are provided first and second water supply passages to supply cooling water from an engine to first and second center housings of first and second turbochargers, and first and second return passages to return the cooling water from the first and second turbochargers to the engine. A cooling-water connection portion of the first water supply is located above the level of a cooling-water connection portion of the second water supply passage. A vapor releasing passage is provided between the second turbocharger and an upper tank provided on the outside of an engine body at a position located above the connection portion of the second return passage of the second turbocharger. Accordingly, the function of vapor releasing from the first and second turbochargers can be improved, thereby increasing the layout flexibility around the engine.Type: GrantFiled: June 24, 2011Date of Patent: November 26, 2013Assignee: Mazda Motor CorporationInventors: Yasushi Niwa, Kazuaki Nishimura, Satoshi Nishizaka, Hiroaki Deguchi
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Patent number: 8397503Abstract: Two turbochargers are arranged vertically near a one side of a crank-shaft direction at a one-side face of an engine body so that the large-size turbocharger is located above the small-sized turbocharger, and an exhaust-gas purification device is arranged an open space made on the other side of the crank-shaft direction so that its exhaust inlet is located above and its outlet is located below. Accordingly, the turbochargers and the exhaust-gas purification device can be arranged compactly and the layout of some devices around the engine can be facilitated.Type: GrantFiled: May 5, 2010Date of Patent: March 19, 2013Assignee: Mazda Motor CorporationInventors: Yasushi Niwa, Atsuhiro Hatabu, Takashi Sasada, Eiji Nakai
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Publication number: 20120070409Abstract: The present invention relates to a tetracyclic fused heterocyclic compound represented by the following formula [I] wherein each symbol is as defined in the specification, or a pharmaceutically acceptable a salt thereof, and a hepatitis C virus (HCV) polymerase inhibitor and a therapeutic agent for hepatitis C containing this compound. The compound of the present invention shows an anti-HCV activity based on the HCV polymerase inhibitory activity, and useful as an agent for the prophylaxis or treatment of hepatitis C.Type: ApplicationFiled: February 3, 2011Publication date: March 22, 2012Applicant: Japan Tobacco Inc.Inventors: Takahiro Oka, Kazutaka Ikegashira, Shintaro Hirashima, Hiroshi Yamanaka, Satoru Noji, Yasushi Niwa, Yoko Matsumoto, Toshihiro Sato, Izuru Ando, Yukihiro Nomura
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Publication number: 20120020920Abstract: The present invention relates to a fused ring compound represented by the following formula [I] wherein each symbol is as defined in the specification, or a pharmaceutically acceptable a salt thereof, and a hepatitis C virus (HCV) polymerase inhibitor and a therapeutic agent for hepatitis C containing this compound. The compound of the present invention shows an anti-HCV activity based on the HCV polymerase inhibitory activity, and useful as an agent for the prophylaxis or treatment of hepatitis C.Type: ApplicationFiled: February 24, 2011Publication date: January 26, 2012Applicant: Japan Tobacco Inc.Inventors: Ryo Mizojiri, Shintaro Hirashima, Takahiro Oka, Kenta Aoki, Satoru Noji, Izuru Ando, Toshihiro Sato, Yasushi Niwa
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Publication number: 20120003082Abstract: There are provided first and second water supply passages to supply cooling water from an engine to first and second center housings of first and second turbochargers, and first and second return passages to return the cooling water from the first and second turbochargers to the engine. A cooling-water connection portion of the first water supply is located above the level of a cooling-water connection portion of the second water supply passage. A vapor releasing passage is provided between the second turbocharger and an upper tank provided on the outside of an engine body at a position located above the connection portion of the second return passage of the second turbocharger. Accordingly, the function of vapor releasing from the first and second turbochargers can be improved, thereby increasing the layout flexibility around the engine.Type: ApplicationFiled: June 24, 2011Publication date: January 5, 2012Applicant: MAZDA MOTOR CORPORATIONInventors: Yasushi NIWA, Kazuaki NISHIMURA, Satoshi NISHIZAKA, Hiroaki DEGUCHI
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Publication number: 20120000196Abstract: The disclosure provides a turbo-charging apparatus for a vehicle engine, which includes a first and second turbocharger, an inter-turbine passage connecting a discharging port of a first turbocharger turbine with an introducing port of a second turbocharger turbine, a bypass passage connecting an introducing passage of the first turbocharger turbine with the inter-turbine passage, and a control valve for opening and closing the bypass passage. The inter-turbine passage extends substantially straight from the discharging port of the first turbocharger turbine toward the second turbocharger when viewed from a direction parallel to turbine shafts of the first and second turbochargers, which are arranged substantially parallel to each other, so that the inter-turbine passage connects with an outer circumferential part of the second turbocharger turbine so as to extend in a direction tangent to an outer circumference direction of the second turbocharger turbine.Type: ApplicationFiled: June 14, 2011Publication date: January 5, 2012Applicant: MAZDA MOTOR CORPORATIONInventors: Yasushi Niwa, Einosuke Suekuni, Atsuhiro Hatabu, Satoshi Nishizaka
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Publication number: 20120003075Abstract: A first turbocharger comprises a first center housing and a first return passage. A second turbocharger comprises a second center housing and a second return passage. The first return passage joins the second return passage at a junction. The length of the second return passage from the second center housing to the junction is longer than that of the first return passage from the first center housing to the junction. A bellows-shaped vibration absorption portion is provided at the second return passage. The first return passage comprises a first upstream return passage and a first downstream return passage, and the first upstream and downstream return passages are connected to each other via the flexible hose.Type: ApplicationFiled: June 22, 2011Publication date: January 5, 2012Applicant: MAZDA MOTOR CORPORATIONInventors: Yasushi NIWA, Kazuaki NISHIMURA, Satoshi NISHIZAKA, Hiroaki DEGUCHI
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Patent number: 7977331Abstract: The present invention relates to a tetracyclic fused heterocyclic compound represented by the following formula [I] wherein each symbol is as defined in the specification, or a pharmaceutically acceptable a salt thereof, and a hepatitis C virus (HCV) polymerase inhibitor and a therapeutic agent for hepatitis C containing this compound. The compound of the present invention shows an anti-HCV activity based on the HCV polymerase inhibitory activity, and useful as an agent for the prophylaxis or treatment of hepatitis C.Type: GrantFiled: December 21, 2007Date of Patent: July 12, 2011Assignee: Japan Tobacco Inc.Inventors: Takahiro Oka, Kazutaka Ikegashira, Shintaro Hirashima, Hiroshi Yamanaka, Satoru Noji, Yasushi Niwa, Yoko Matsumoto, Toshihiro Sato, Izuru Ando, Yukihiro Nomura
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Publication number: 20100313561Abstract: Two turbochargers are arranged vertically near a one side of a crank-shaft direction at a one-side face of an engine body so that the large-size turbocharger is located above the small-sized turbocharger, and an exhaust-gas purification device is arranged an open space made on the other side of the crank-shaft direction so that its exhaust inlet is located above and its outlet is located below. Accordingly, the turbochargers and the exhaust-gas purification device can be arranged compactly and the layout of some devices around the engine can be facilitated.Type: ApplicationFiled: May 5, 2010Publication date: December 16, 2010Applicant: MAZDA MOTOR CORPORATIONInventors: Yasushi NIWA, Atsuhiro HATABU, Takashi SASADA, Eiji NAKAI
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Patent number: 7659263Abstract: The present invention relates to a thienopyrrole compound represented by the following formula [I] wherein each symbol is as defined in the specification, or a pharmaceutically acceptable a salt thereof, and a hepatitis C virus (HCV) polymerase inhibitor and a therapeutic agent for hepatitis C containing this compound as an active ingredient. The compound of the present invention shows an anti-HCV activity based on the HCV polymerase inhibitory activity, and useful as an agent for the prophylaxis or treatment of hepatitis C.Type: GrantFiled: November 10, 2005Date of Patent: February 9, 2010Assignee: Japan Tobacco Inc.Inventors: Ryo Mizojiri, Takahiro Oka, Kenta Aoki, Satoru Noji, Yoko Matsumoto, Toshihiro Sato, Izuru Ando, Yasushi Niwa
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Publication number: 20090036444Abstract: The present invention relates to a fused ring compound represented by the following formula [I] wherein each symbol is as defined in the specification, or a pharmaceutically acceptable a salt thereof, and a hepatitis C virus (HCV) polymerase inhibitor and a therapeutic agent for hepatitis C containing this compound. The compound of the present invention shows an anti-HCV activity based on the HCV polymerase inhibitory activity, and useful as an agent for the prophylaxis or treatment of hepatitis C.Type: ApplicationFiled: May 18, 2006Publication date: February 5, 2009Applicant: Japan Tobacco Inc.Inventors: Ryo Mizojiri, Shintaro Hirashima, Takahiro Oka, Kenta Aoki, Satoru Noji, Izuru Ando, Toshihiro Sato, Yasushi Niwa
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Publication number: 20070049593Abstract: The present invention relates to a tetracyclic fused heterocyclic compound represented by the following formula [I] wherein each symbol is as defined in the specification, or a pharmaceutically acceptable a salt thereof, and a hepatitis C virus (HCV) polymerase inhibitor and a therapeutic agent for hepatitis C containing this compound. The compound of the present invention shows an anti-HCV activity based on the HCV polymerase inhibitory activity, and useful as an agent for the prophylaxis or treatment of hepatitis C.Type: ApplicationFiled: February 23, 2005Publication date: March 1, 2007Applicant: Japan Tobacco Inc.Inventors: Takahiro Oka, Kazutaka Ikegashira, Shintaro Hirashima, Hiroshi Yamanaka, Satoru Noji, Yasushi Niwa, Yoko Matsumoto, Toshihiro Sato, Izuru Ando, Yukihiro Nomura
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Patent number: 7132769Abstract: A terminal arrangement of a motor has a terminal base formed with a plurality of terminal pins, the terminal base being fixed detachably on a stator iron core of a motor, terminal pins formed on bobbins, connected electrically with windings wound around the bobbins, a printed circuit board arranged on the stator iron core so as to connect electrically the terminal pins formed on the bobbins with the terminal pins formed on the terminal base, and an end bracket arranged so as to cover the printed circuit board. A hole is formed in the stator iron core, and an earth electrode is projected from the terminal base, and inserted into the hole so as to be connected electrically with the stator iron core, the earth electrode being connected electrically to one of the terminal pins formed on the terminal base. A capacitor motor has a motor having a stator iron core, and a phase advancing capacitor fixed detachably on the stator iron core.Type: GrantFiled: September 29, 2005Date of Patent: November 7, 2006Assignee: Japan Servo Co., Ltd.Inventors: Keiji Uchida, Hiroyuki Tanaka, Hitoshi Ishii, Yasushi Niwa, Toshio Kobayashi
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Publication number: 20060167246Abstract: The present invention relates to a thienopyrrole compound represented by the following formula [I] wherein each symbol is as defined in the specification, or a pharmaceutically acceptable a salt thereof, and a hepatitis C virus (HCV) polymerase inhibitor and a therapeutic agent for hepatitis C containing this compound as an active ingredient. The compound of the present invention shows an anti-HCV activity based on the HCV polymerase inhibitory activity, and useful as an agent for the prophylaxis or treatment of hepatitis C.Type: ApplicationFiled: November 10, 2005Publication date: July 27, 2006Applicant: Japan Tobacco Inc.Inventors: Ryo Mizojiri, Takahiro Oka, Kenta Aoki, Satoru Noji, Yoko Matsumoto, Toshihiro Sato, Izuru Ando, Yasushi Niwa
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Publication number: 20060028076Abstract: A terminal arrangement of a motor has a terminal base formed with a plurality of terminal pins, the terminal base being fixed detachably on a stator iron core of a motor, terminal pins formed on bobbins, connected electrically with windings wound around the bobbins, a printed circuit board arranged on the stator iron core so as to connect electrically the terminal pins formed on the bobbins with the terminal pins formed on the terminal base, and an end bracket arranged so as to cover the printed circuit board. A hole is formed in the stator iron core, and an earth electrode is projected from the terminal base, and inserted into the hole so as to be connected electrically with the stator iron core, the earth electrode being connected electrically to one of the terminal pins formed on the terminal base. A capacitor motor has a motor having a stator iron core, and a phase advancing capacitor fixed detachably on the stator iron core.Type: ApplicationFiled: September 29, 2005Publication date: February 9, 2006Inventors: Keiji Uchida, Hiroyuki Tanaka, Hitoshi Ishii, Yasushi Niwa, Toshio Kobayashi
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Patent number: 6975052Abstract: A terminal arrangement of a motor has a terminal base formed with a plurality of terminal pins, the terminal base being fixed detachably on a stator iron core of a motor, terminal pins formed on bobbins, connected electrically with windings wound around the bobbins, a printed circuit board arranged on the stator iron core so as to connect electrically the terminal pins formed on the bobbins with the terminal pins formed on the terminal base, and an end bracket arranged so as to cover the printed circuit board. A hole is formed in the stator iron core, and an earth electrode is projected from the terminal base, and inserted into the hole so as to be connected electrically with the stator iron core, the earth electrode being connected electrically to one of the terminal pins formed on the terminal base. A capacitor motor has a motor having a stator iron core, and a phase advancing capacitor fixed detachably on the stator iron core.Type: GrantFiled: August 19, 2004Date of Patent: December 13, 2005Assignee: Japan Servo Co., Ltd.Inventors: Keiji Uchida, Hiroyuki Tanaka, Hitoshi Ishii, Yasushi Niwa, Toshio Kobayashi
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Publication number: 20050046289Abstract: A terminal arrangement of a motor has a terminal base formed with a plurality of terminal pins, the terminal base being fixed detachably on a stator iron core of a motor, terminal pins formed on bobbins, connected electrically with windings wound around the bobbins, a printed circuit board arranged on the stator iron core so as to connect electrically the terminal pins formed on the bobbins with the terminal pins formed on the terminal base, and an end bracket arranged so as to cover the printed circuit board. A hole is formed in the stator iron core, and an earth electrode is projected from the terminal base, and inserted into the hole so as to be connected electrically with the stator iron core, the earth electrode being connected electrically to one of the terminal pins formed on the terminal base. A capacitor motor has a motor having a stator iron core, and a phase advancing capacitor fixed detachably on the stator iron core.Type: ApplicationFiled: August 19, 2004Publication date: March 3, 2005Inventors: Keiji Uchida, Hiroyuki Tanaka, Hitoshi Ishii, Yasushi Niwa, Toshio Kobayashi
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Patent number: 6427456Abstract: An automatic ice maker for use in freezing compartments of the refrigerators. A planar stop arm is used as an ice cube detecting device for detecting a sufficient ice cubes stored in a bin arranged below a tray for making ice cubes. The stop arm can be swung between the bin for storing therein the ice cubes and the tray in order prevent the ice cubes stored in the bin from being molten by a head radiation from a heater provided on the tray.Type: GrantFiled: March 28, 2001Date of Patent: August 6, 2002Assignee: Japan Servo Co. Ltd.Inventors: Yasushi Niwa, Kentaro Yamane, Eiji Kuroda, Kazufumi Yamashita, Hitoshi Ando, Atsuo Nakayama, Naoko Toida