Patents by Inventor Tsutomu Oishi
Tsutomu Oishi 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: 11939217Abstract: According to one embodiment, a magnesium-recycling hydrogen generation system includes: a by-product acquisition unit that separates a by-product from a post-reaction solution, which is a solution after reacting with a hydrogen generation material containing a hydrogen-containing magnesium compound that generates hydrogen via a reaction with the solution, to acquire the by-product including more than one type of oxygen-containing magnesium compound that contains oxygen produced by the reaction, a raw material production unit that reacts the by-product with a halogen-containing substance containing halogen and other atoms than the halogen to produce a raw material containing magnesium halide, a hydrogen generation material production unit that reduces the raw material with plasma containing hydrogen to produce the hydrogen generation material, and a hydrogen generator that reacts the hydrogen generation material with the solution to generate hydrogen.Type: GrantFiled: January 15, 2021Date of Patent: March 26, 2024Assignee: SE CORPORATIONInventors: Tsutomu Takizawa, Toshihiro Oishi, Yoshiharu Sawaki, Mineo Morimoto, Yuichi Sakamoto
-
Patent number: 11498306Abstract: A sound-absorbing panel to be used affixed to a jet engine of an aircraft, provided with: a resin core layer having a first surface, a second surface disposed on the side opposite from the first surface, and multiple partitions extending between the first surface and second surface so as to partition multiple cells; a resin first skin layer laminated on the first surface of the core layer; and a resin second skin layer laminated on the second surface of the core layer. The first skin layer is disposed so as to face the external space while in use, and has multiple through-holes for providing communication between internal spaces of the multiple cells and external space faced by the first skin layer. The core layer has openings for providing communication between the internal spaces of the multiple cells and external space of the core layer.Type: GrantFiled: June 5, 2018Date of Patent: November 15, 2022Assignees: IHI CORPORATION, JAPAN AEROSPACE EXPLORATION AGENCY, GIFU PLASTIC INDUSTRY CO., LTD.Inventors: Tsutomu Oishi, Masahiro Hojo, Shingo Shibagaki
-
Publication number: 20200101690Abstract: A sound-absorbing panel to be used affixed to a jet engine of an aircraft, provided with: a resin core layer having a first surface, a second surface disposed on the side opposite from the first surface, and multiple partitions extending between the first surface and second surface so as to partition multiple cells; a resin first skin layer laminated on the first surface of the core layer; and a resin second skin layer laminated on the second surface of the core layer. The first skin layer is disposed so as to face the external space while in use, and has multiple through-holes for providing communication between internal spaces of the multiple cells and external space faced by the first skin layer. The core layer has openings for providing communication between the internal spaces of the multiple cells and external space of the core layer.Type: ApplicationFiled: June 5, 2018Publication date: April 2, 2020Inventors: Tsutomu OISHI, Masahiro HOJO, Shingo SHIBAGAKI
-
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
-
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
-
Patent number: 8911825Abstract: A production process which comprises a preform formation step of forming a fiber preform made of silicon carbide short fibers having heat resistance of 1000° C. or greater; a sol-gel preparation step of preparing a sol-gel solution containing a heat resistant compound having heat resistance of 1000° C. or greater; an impregnation-drying-calcination step of impregnating the fiber preform with the sol-gel solution, followed by drying and calcining; and a crystallization step of crystallizing the fiber preform after impregnation, drying and calcination.Type: GrantFiled: September 29, 2010Date of Patent: December 16, 2014Assignees: IHI Corporation, Ube Industries, Ltd.Inventors: Tsutomu Oishi, Yoshizumi Tanaka, Norifumi Miyamoto, Michiyuki Suzuki, Mitsuhiko Sato
-
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
-
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
-
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
-
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
-
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
-
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
-
Publication number: 20110012047Abstract: A production process which comprises a preform formation step of forming a fiber preform made of silicon carbide short fibers having heat resistance of 1000° C. or greater; a sol-gel preparation step of preparing a sol-gel solution containing a heat resistant compound having heat resistance of 1000° C. or greater; an impregnation-drying-calcination step of impregnating the fiber preform with the sol-gel solution, followed by drying and calcining; and a crystallization step of crystallizing the fiber preform after impregnation, drying and calcination.Type: ApplicationFiled: September 29, 2010Publication date: January 20, 2011Applicants: ISHIKAWAJIMA-HARIMA HEAVY INDUSTRIES CO., LTD., UBE INDUSTRIES, LTD.Inventors: Tsutomu OISHI, Yoshizumi TANAKA, Norifumi MIYAMOTO, Michiyuki SUZUKI, Mitsuhiko SATO
-
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
-
Patent number: 7829479Abstract: A production process which comprises a preform formation step of forming a fiber preform made of silicon carbide short fibers having heat resistance of 1000° C. or greater; a sol-gel preparation step of preparing a sol-gel solution containing a heat resistant compound having heat resistance of 1000° C. or greater; an impregnation-drying-calcination step of impregnating the fiber preform with the sol-gel solution, followed by drying and calcining; and a crystallization step of crystallizing the fiber preform after impregnation, drying and calcination.Type: GrantFiled: February 17, 2005Date of Patent: November 9, 2010Assignees: Ishikawajima-Harima Heavy Industries Co., Ltd., Ube Industries, Ltd.Inventors: Tsutomu Oishi, Yoshizumi Tanaka, Norifumi Miyamoto, Michiyuki Suzuki, Mitsuhiko Sato
-
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
-
Publication number: 20080226885Abstract: A production process which comprises a preform formation step of forming a fiber preform made of silicon carbide short fibers having heat resistance of 1000° C. or greater; a sol-gel preparation step of preparing a sol-gel solution containing a heat resistant compound having heat resistance of 1000° C. or greater; an impregnation-drying-calcination step of impregnating the fiber preform with the sol-gel solution, followed by drying and calcining; and a crystallization step of crystallizing the fiber preform after impregnation, drying and calcination.Type: ApplicationFiled: February 17, 2005Publication date: September 18, 2008Applicants: ISHIKAWAJIMA-HARIMA HEAVY INDUSTRIES CO., LTD., UBE INDUSTRIES, LTD.Inventors: Tsutomu Oishi, Yoshizumi Tanaka, Norifumi Miyamoto, Michiyuki Suzuki, Mitsuhiko Sato
-
Patent number: 7017332Abstract: There is disclosed a lobe mixer comprising: a cylindrical partition wall 22 which partitions a high-speed inner flow from a low-speed outer flow; a lobe portion 24 which is disposed on a downstream side of the partition wall and whose transverse sectional shape is a waveform shape and is enlarged on the downstream side; and a connecting reinforcement member 26 which is disposed between lobe side walls 24a extending in a radial direction of the lobe portion to connect the adjacent lobe side walls to each other. The connecting reinforcement member 26 is a thin member disposed along a flow line of a fluid which flows between the lobe side walls.Type: GrantFiled: February 5, 2003Date of Patent: March 28, 2006Assignee: Ishikawajima-Harima Heavy Industries Co., LtdInventor: Tsutomu Oishi
-
Patent number: 6911158Abstract: The porous sound-absorbing material manufactured is light and has excellent heat resistance to be applicable to the exhaust nozzle etc. of a jet engine, can effectively absorb noise as that from a jet engine, over a wide range of frequencies, is free from variations in porosity, and provides stable performance characteristics. An essential feature thereof is the formation of a skeleton of the material, with aggregates containing voids. Thus, a porous sound-absorbing material having a skeleton of aggregates with first voids is described, wherein diameters of first voids of the aggregates are 50 ?m to 100 ?m, approximately, and diameters of second voids between the aggregates are 100 ?m to 600 ?m.Type: GrantFiled: November 28, 2001Date of Patent: June 28, 2005Assignees: Ishikawajima-Harima Heavy Industries Co., Ltd, Ube Industries, Ltd.Inventors: Tsutomu Oishi, Yoshiya Nakamura, Yoshizumi Tanaka, Mitsuhiko Sato
-
Patent number: 6881342Abstract: An optically active poly(N-?-methylbenzylmaleimide) represented by the following formula (1): wherein n is a number within a range of from 2 to 10,000, and symbol * represents optically active carbon, and having a specific rotation ([?]43525) of at least +30°.Type: GrantFiled: August 6, 2003Date of Patent: April 19, 2005Assignee: Tosoh CorporationInventor: Tsutomu Oishi