Patents by Inventor Yoshinori Oba
Yoshinori Oba 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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Publication number: 20240087883Abstract: A method for forming a silicon-containing film in a recess formed on a surface of a substrate, the method includes: (a) forming a flowable film in the recess by exposing the substrate, which is adjusted to a first temperature, to plasma generated from a processing gas including a halogen-containing silane: and (b) curing the flowable film by thermally processing the substrate at a second temperature higher than the first temperature.Type: ApplicationFiled: January 11, 2022Publication date: March 14, 2024Inventors: Nobuo MATSUKI, Yoshinori MORISADA, Daisuke OBA
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Patent number: 9528468Abstract: A noise reduction system includes: a microjet ring (16) provided at an exhaust side peripheral edge of a main nozzle of a jet engine, and has a plurality of injection pipes (26) formed in a circumferential direction thereof at regular intervals; and a supply path configured to take part of compressed air in from a flow path in an upstream side of a combustor in the jet engine, and to guide the part of compressed air to the plurality of injection pipes (26), wherein the plurality of injection pipes (26) is configured to inject the part of compressed air to a jet flow.Type: GrantFiled: October 26, 2010Date of Patent: December 27, 2016Assignee: IHI CORPORATIONInventors: Nozomi Tanaka, Shinya Kusuda, Tsutomu Oishi, Yoshinori Oba
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Patent number: 9140210Abstract: The present invention relates to a jet engine including protrusions (1) for preventing the increase of the velocity gradient of a fluid in a mixed layer of a jet flow and an external air flow by bending the mixed layer, when viewed from the side of a jet flow injected.Type: GrantFiled: October 20, 2010Date of Patent: September 22, 2015Assignee: IHI CORPORATIONInventors: Yoshinori Oba, Tsutomu Oishi, Nozomi Tanaka, Shinya Kusuda
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Patent number: 8904795Abstract: A noise reducing device in a jet engine that has a cylindrical casing, a cylindrical partition wall that is inserted in the casing while protruding partially from a trailing edge of the casing, and a compressor that compresses air that is taken into the cylindrical partition wall, with the inside of the cylindrical partition wall serving as a duct in which a core stream of high-speed air flows, and the space between the cylindrical partition wall and the casing serving as a duct in which a bypass stream of low-speed air flows, and being connected with a wing of an airplane by a pylon that has a projection portion that extends beyond the casing to the downstream of the core stream and the bypass stream, the noise reducing device includes a nozzle, disposed at the pylon on the downstream of the core stream, that injects a fluid toward a noise generation source that is produced from the mutual approach of an ambient air stream that is produced outside of the bypass stream and the core stream.Type: GrantFiled: February 25, 2009Date of Patent: December 9, 2014Assignee: IHI CorporationInventors: Tsutomu Oishi, Yoshinori Oba
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Patent number: 8813907Abstract: A noise reduction system with a chamber includes a chamber (17) which is provided at a portion of a supply path connecting a flow path in an upstream side of a combustor in a jet engine to a plurality of microjet nozzles which is provided at an exhaust side peripheral edge of a main nozzle of the jet engine, wherein the supply path is configured to supply part of compressed air from the flow path into the chamber (17), and the chamber (17) is configured to inject the compressed air through the plurality of the microjet nozzles (63) to a jet flow.Type: GrantFiled: October 27, 2010Date of Patent: August 26, 2014Assignee: IHI CorporationInventors: Nozomi Tanaka, Shinya Kusuda, Tsutomu Oishi, Yoshinori Oba
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Patent number: 8418437Abstract: A jet flow discharge nozzle includes a tubular partition wall, a tubular casing which covers an outer periphery of the tubular partition wall, and a bifurcation which extends in an axial direction of the tubular partition wall and the casing so as to support downstream ends of the tubular partition wall and the casing from outside. Inside of the tubular partition wall is defined as a flow path for a high-speed core flow. A space between the tubular partition wall and the casing is defined as a flow path for a low-speed bypass flow. A pair of first projections is provided at a downstream edge of the tubular partition wall near the bifurcation at positions symmetric about the bifurcation. One of ridges of each of the first projections faces an upstream side. The invention reduces noise by avoiding adverse effects of the presence of the bifurcation on an increase in noise.Type: GrantFiled: December 18, 2007Date of Patent: April 16, 2013Assignee: IHI CorporationInventors: Yoshinori Oba, Tsutomu Oishi
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Publication number: 20130086907Abstract: The present invention relates to a jet engine including protrusions (1) for preventing the increase of the velocity gradient of a fluid in a mixed layer of a jet flow and an external air flow by bending the mixed layer, when viewed from the side of a jet flow injected.Type: ApplicationFiled: October 20, 2010Publication date: April 11, 2013Inventors: Yoshinori Oba, Tsutomu Oishi, Nozomi Tanaka, Shinya Kusuda
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Publication number: 20120240587Abstract: A noise reduction system includes: a microjet ring (16) provided at an exhaust side peripheral edge of a main nozzle of a jet engine, and has a plurality of injection pipes (26) formed in a circumferential direction thereof at regular intervals; and a supply path configured to take part of compressed air in from a flow path in an upstream side of a combustor in the jet engine, and to guide the part of compressed air to the plurality of injection pipes (26), wherein the plurality of injection pipes (26) is configured to inject the part of compressed air to a jet flow.Type: ApplicationFiled: October 26, 2010Publication date: September 27, 2012Inventors: Nozomi Tanaka, Shinya Kusuda, Tsutomu Oishi, Yoshinori Oba
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Publication number: 20120228054Abstract: A noise reduction system with a chamber includes a chamber (17) which is provided at a portion of a supply path connecting a flow path in an upstream side of a combustor in a jet engine to a plurality of microjet nozzles which is provided at an exhaust side peripheral edge of a main nozzle of the jet engine, wherein the supply path is configured to supply part of compressed air from the flow path into the chamber (17), and the chamber (17) is configured to inject the compressed air through the plurality of the microjet nozzles (63) to a jet flow.Type: ApplicationFiled: October 27, 2010Publication date: September 13, 2012Inventors: Nozomi Tanaka, Shinya Kusuda, Tsutomu Oishi, Yoshinori Oba
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Publication number: 20110000181Abstract: A noise reducing device in a jet engine that has a cylindrical casing, a cylindrical partition wall that is inserted in the casing while protruding partially from a trailing edge of the casing, and a compressor that compresses air that is taken into the cylindrical partition wall, with the inside of the cylindrical partition wall serving as a duct in which a core stream of high-speed air flows, and the space between the cylindrical partition wall and the casing serving as a duct in which a bypass stream of low-speed air flows, and being connected with a wing of an airplane by a pylon that has a projection portion that extends beyond the casing to the downstream of the core stream and the bypass stream, the noise reducing device includes a nozzle, disposed at the pylon on the downstream of the core stream, that injects a fluid toward a noise generation source that is produced from the mutual approach of an ambient air stream that is produced outside of the bypass stream and the core stream.Type: ApplicationFiled: February 25, 2009Publication date: January 6, 2011Inventors: Tsutomu Oishi, Yoshinori Oba
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Publication number: 20100031628Abstract: A jet flow discharge nozzle includes a tubular partition wall, a tubular casing which covers an outer periphery of the tubular partition wall, and a bifurcation which extends in an axial direction of the tubular partition wall and the casing so as to support downstream ends of the tubular partition wall and the casing from outside. Inside of the tubular partition wall is defined as a flow path for a high-speed core flow. A space between the tubular partition wall and the casing is defined as a flow path for a low-speed bypass flow. A pair of first projections is provided at a downstream edge of the tubular partition wall near the bifurcation at positions symmetric about the bifurcation. One of ridges of each of the first projections faces an upstream side. The invention reduces noise by avoiding adverse effects of the presence of the bifurcation on an increase in noise.Type: ApplicationFiled: December 18, 2007Publication date: February 11, 2010Inventors: Yoshinori Oba, Tsutomu Oishi