Patents by Inventor Yuichi FUNATO
Yuichi FUNATO 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: 11229893Abstract: Provided is a method of producing a silicon compound material, including the steps of: storing a silicon carbide preform in a reaction furnace; supplying a raw material gas containing methyltrichlorosilane to the reaction furnace to infiltrate the preform with silicon carbide; and controlling and reducing a temperature of a gas discharged from the reaction furnace at a predetermined rate to subject the gas to continuous thermal history, to thereby decrease generation of a liquid or solid by-product derived from the gas.Type: GrantFiled: January 4, 2019Date of Patent: January 25, 2022Assignees: IHI Corporation, The University of TokyoInventors: Yasuyuki Fukushima, Kozue Akazaki, Yasutomo Tanaka, Kazuma Akikubo, Takeshi Nakamura, Yukihiro Shimogaki, Takeshi Momose, Noboru Sato, Kohei Shima, Yuichi Funato
-
Publication number: 20190135640Abstract: Provided is a method of producing a silicon compound material, including the steps of: storing a silicon carbide preform in a reaction furnace; supplying a raw material gas containing methyltrichlorosilane to the reaction furnace to infiltrate the preform with silicon carbide; and controlling and reducing a temperature of a gas discharged from the reaction furnace at a predetermined rate to subject the gas to continuous thermal history, to thereby decrease generation of a liquid or solid by-product derived from the gas.Type: ApplicationFiled: January 4, 2019Publication date: May 9, 2019Applicants: IHI Corporation, The University of TokyoInventors: Yasuyuki FUKUSHIMA, Kozue AKAZAKI, Yasutomo TANAKA, Kazuma AKIKUBO, Takeshi NAKAMURA, Yukihiro SHIMOGAKI, Takeshi MOMOSE, Noboru SATO, Kohei SHIMA, Yuichi FUNATO
-
Patent number: 10221104Abstract: A mixed gas containing a precursor gas, an additive gas and a carrier gas is supplied to a preform stored in an electric furnace, and silicon carbide is deposited by chemical vapor deposition or chemical vapor phase impregnation to form a film. The preform includes multiple fiber bundles, and the fiber bundles include multiple fibers. This heat-resistant composite material includes a ceramic fiber preform impregnated with silicon carbide, and producing the composite material involves a step in which silicon carbide is deposited between the fibers to integrate the fibers which configure the fiber bundles, and a step in which silicon carbide is deposited between the fiber bundles to integrate the fiber bundles. Hereby, uniformity of embedding and growth rate of the silicon carbide film are both attained.Type: GrantFiled: May 26, 2016Date of Patent: March 5, 2019Assignees: IHI CORPORATION, THE UNIVERSITY OF TOKYOInventors: Takeshi Nakamura, Masato Ishizaki, Kozue Hotozuka, Yasuyuki Fukushima, Yukihiro Shimogaki, Takeshi Momose, Hidetoshi Sugiura, Kohei Shima, Yuichi Funato
-
Patent number: 10167549Abstract: In the present embodiment, in the production of a heat-resistant composite material resulting from impregnating a ceramic fiber preform with silicon carbide, a mixed gas containing starting material gas, an additive gas, and a carrier gas is supplied to a substrate having a minute structure such as a preform stored in an electric furnace, silicon carbide is deposited to form a film by means of a chemical vapor deposition method or a chemical vapor infiltration method, and the film formation growth speed and embedding uniformity are controlled by means of the amount of additive gas added to the starting material gas, the starting material gas contains tetramethylsilane, and the additive gas contains a molecule containing chlorine such as methyl chloride or hydrogen chloride. The film formation growth speed and embedding uniformity of the silicon carbide are both achieved.Type: GrantFiled: June 28, 2016Date of Patent: January 1, 2019Assignees: IHI CORPORATION, THE UNIVERSITY OF TOKYOInventors: Takeshi Nakamura, Kozue Hotozuka, Yasuyuki Fukushima, Yukihiro Shimogaki, Takeshi Momose, Hidetoshi Sugiura, Kohei Shima, Yuichi Funato
-
Patent number: 9822445Abstract: By using chemical vapor deposition or chemical vapor infiltration, silicon carbide is deposited on a preform 100 accommodated in a reaction furnace 11 for film formation, and the amount of additive gas added to raw material gas and carrier gas to be supplied to the reactive furnace 11 is used to control the growth rate and filling uniformity at film formation of silicon carbide. When the film formation of silicon carbide follows a first-order reaction, the amount of added additive gas is used to control the sticking probability of the film-forming species. When the film formation of silicon carbide follows a Langmuir-Hinshelwood rate formula, the amount of added additive gas is used to make a control so that a zero-order reaction region of the Langmuir-Hinshelwood rate formula is used.Type: GrantFiled: February 12, 2015Date of Patent: November 21, 2017Assignees: IHI Corporation, The University of TokyoInventors: Takeshi Nakamura, Masato Ishizaki, Kenji Fuchigami, Kozue Hotozuka, Yukihiro Shimogaki, Takeshi Momose, Yasuyuki Fukushima, Noboru Sato, Yuichi Funato, Hidetoshi Sugiura
-
Publication number: 20160305015Abstract: In the present embodiment, in the production of a heat-resistant composite material resulting from impregnating a ceramic fiber preform with silicon carbide, a mixed gas containing starting material gas, an additive gas, and a carrier gas is supplied to a substrate having a minute structure such as a preform stored in an electric furnace, silicon carbide is deposited to form a film by means of a chemical vapor deposition method or a chemical vapor infiltration method, and the film formation growth speed and embedding uniformity are controlled by means of the amount of additive gas added to the starting material gas, the starting material gas contains tetramethylsilane, and the additive gas contains a molecule containing chlorine such as methyl chloride or hydrogen chloride. The film formation growth speed and embedding uniformity of the silicon carbide are both achieved.Type: ApplicationFiled: June 28, 2016Publication date: October 20, 2016Applicants: IHI Corporation, The University of TokyoInventors: Takeshi NAKAMURA, Kozue HOTOZUKA, Yasuyuki FUKUSHIMA, Yukihiro SHIMOGAKI, Takeshi MOMOSE, Hidetoshi SUGIURA, Kohei SHIMA, Yuichi FUNATO
-
Publication number: 20160297716Abstract: A mixed gas containing a precursor gas, an additive gas and a carrier gas is supplied to a preform stored in an electric furnace, and silicon carbide is deposited by chemical vapor deposition or chemical vapor phase impregnation to form a film. The preform includes multiple fiber bundles, and the fiber bundles include multiple fibers. This heat-resistant composite material includes a ceramic fiber preform impregnated with silicon carbide, and producing the composite material involves a step in which silicon carbide is deposited between the fibers to integrate the fibers which configure the fiber bundles, and a step in which silicon carbide is deposited between the fiber bundles to integrate the fiber bundles. Hereby, uniformity of embedding and growth rate of the silicon carbide film are both attained.Type: ApplicationFiled: May 26, 2016Publication date: October 13, 2016Applicants: IHI Corporation, The University of TokyoInventors: Takeshi NAKAMURA, Masato ISHIZAKI, Kozue HOTOZUKA, Yasuyuki FUKUSHIMA, Yukihiro SHIMOGAKI, Takeshi MOMOSE, Hidetoshi SUGIURA, Kohei SHIMA, Yuichi FUNATO
-
Publication number: 20150152547Abstract: By using chemical vapor deposition or chemical vapor infiltration, silicon carbide is deposited on a preform 100 accommodated in a reaction furnace 11 for film formation, and the amount of additive gas added to raw material gas and carrier gas to be supplied to the reactive furnace 11 is used to control the growth rate and filling uniformity at film formation of silicon carbide. When the film formation of silicon carbide follows a first-order reaction, the amount of added additive gas is used to control the sticking probability of the film-forming species. When the film formation of silicon carbide follows a Langmuir-Hinshelwood rate formula, the amount of added additive gas is used to make a control so that a zero-order reaction region of the Langmuir-Hinshelwood rate formula is used.Type: ApplicationFiled: February 12, 2015Publication date: June 4, 2015Applicants: IHI Corporation, The University of TokyoInventors: Takeshi NAKAMURA, Masato ISHIZAKI, Kenji FUCHIGAMI, Kozue HOTOZUKA, Yukihiro SHIMOGAKI, Takeshi MOMOSE, Yasuyuki FUKUSHIMA, Noboru SATO, Yuichi FUNATO, Hidetoshi SUGIURA