Patents by Inventor Shizuo Fujita
Shizuo Fujita 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: 11919442Abstract: A vehicle interior lighting device includes a light source which is installed at an end of an instrument panel of a vehicle. Light emitted from the light source propagates from the instrument panel toward a door panel, and is projected on a surface of a door trim of the door panel. A decorative pattern element is installed on a light emitting side of the light source. As light from the light source passes through the decorative pattern element, the light can create a pattern on a surface of the door trim. Because the light source is installed on the instrument panel spaced from the door trim rather than on the door trim itself, light can be projected on a large area of the door trim. Furthermore, an impressive feature of a decorative pattern which changes in accordance with a door opening angle can be achieved.Type: GrantFiled: April 19, 2023Date of Patent: March 5, 2024Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, TOYODA GOSEI CO., LTD.Inventors: Masahiro Fujita, Shunsuke Kurebayashi, Shizuo Sanjo, Masato Takeuchi, Shunya Nishimura, Ayaka Yagi
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Patent number: 11916103Abstract: A new and useful p-type oxide semiconductor with a wide band gap and an enhanced electrical conductivity and the method of manufacturing the p-type oxide semiconductor are provided. A method of manufacturing a p-type oxide semiconductor including: generating atomized droplets by atomizing a raw material solution containing at least a d-block metal in the periodic table and a metal of Group 13 of the periodic table; carrying the atomized droplets onto a surface of a base by using a carrier gas; causing a thermal reaction of the atomized droplets adjacent to the surface of the base under an atmosphere of oxygen to form the p-type oxide semiconductor on the base.Type: GrantFiled: July 18, 2022Date of Patent: February 27, 2024Assignees: FLOSFIA INC., KYOTO UNIVERSITYInventors: Shizuo Fujita, Kentaro Kaneko, Toshimi Hitora, Tomochika Tanikawa
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Patent number: 11555245Abstract: In a metal oxide film formation method of the present invention, the following steps are performed. In a solution vessel, a raw-material solution including aluminum as a metallic element is turned into a mist so that a raw-material solution mist is obtained. In a solution vessel provided independently of the solution vessel, a reaction aiding solution including a reaction aiding agent for formation of aluminum oxide is turned into a mist so that an aiding-agent mist is obtained. Then, the raw-material solution mist and the aiding-agent mist are fed to a nozzle provided in a reactor vessel via paths. Thereafter, the raw-material solution mist and the aiding-agent mist are mixed in the nozzle so that a mixed mist is obtained. Then, the mixed mist is fed onto a back surface of a heated P-type silicon substrate.Type: GrantFiled: June 18, 2015Date of Patent: January 17, 2023Assignees: Toshiba Mitsubishi-Electric Industrial Systems Corporation, Kyoto University, Kochi Prefectural Public University CorporationInventors: Takahiro Hiramatsu, Hiroyuki Orita, Toshiyuki Kawaharamura, Shizuo Fujita, Takayuki Uchida
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Publication number: 20220352303Abstract: A new and useful p-type oxide semiconductor with a wide band gap and an enhanced electrical conductivity and the method of manufacturing the p-type oxide semiconductor are provided. A method of manufacturing a p-type oxide semiconductor including: generating atomized droplets by atomizing a raw material solution containing at least a d-block metal in the periodic table and a metal of Group 13 of the periodic table; carrying the atomized droplets onto a surface of a base by using a carrier gas; causing a thermal reaction of the atomized droplets adjacent to the surface of the base under an atmosphere of oxygen to form the p-type oxide semiconductor on the base.Type: ApplicationFiled: July 18, 2022Publication date: November 3, 2022Inventors: Shizuo FUJITA, Kentaro KANEKO, Toshimi HITORA, Tomochika TANIKAWA
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Patent number: 11424320Abstract: A new and useful p-type oxide semiconductor with a wide band gap and an enhanced electrical conductivity and the method of manufacturing the p-type oxide semiconductor are provided. A method of manufacturing a p-type oxide semiconductor including: generating atomized droplets by atomizing a raw material solution containing at least a d-block metal in the periodic table and a metal of Group 13 of the periodic table; carrying the atomized droplets onto a surface of a base by using a carrier gas; causing a thermal reaction of the atomized droplets adjacent to the surface of the base under an atmosphere of oxygen to form the p-type oxide semiconductor on the base.Type: GrantFiled: June 30, 2017Date of Patent: August 23, 2022Assignees: FLOSFIA INC., KYOTO UNIVERSITYInventors: Shizuo Fujita, Kentaro Kaneko, Toshimi Hitora, Tomochika Tanikawa
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Patent number: 11189846Abstract: An electrically-conductive member having sufficient corrosion resistivity even when the electrically-conductive member is exposed to high potential environment and a method of manufacturing the electrically-conductive member are offered. An electrically-conductive member is obtained by a mist CVD method, by forming a metal oxide film on a base member of a separator, and the electrically-conductive member has an active potential range and a passive potential range in an anode polarization curve that is measured in a sulfuric acid aqueous solution having a sulfuric acid concentration that is 5.0×10?4 mol/dm3 at pH3 and having a temperature of 25° C., an anode current density that is 1×10?7 A/cm2 or less in the passive potential range, and the passive potential range reaching to an electric potential that is 1V.Type: GrantFiled: April 27, 2018Date of Patent: November 30, 2021Assignees: FLOSFIA INC., EYETEC CO., LTD., KYOTO UNIVERSITYInventors: Shizuo Fujita, Masafumi Ono, Takayuki Uchida, Kentaro Kaneko, Takashi Tanaka, Toshimi Hitora, Shingo Yagyu
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Patent number: 11152208Abstract: A semiconductor film containing silicon that is evenly doped in the semiconductor film with an enhanced semiconductor property and a method of the semiconductor film using a dopant material containing a complex compound that contains at least silicon and a halogen. The complex compound further contains a hydrocarbon group that is optionally substituted or heterocyclic group that is optionally substituted. A semiconductor film containing Si doped into the semiconductor film as a dopant to a depth that is at least 0.3 ?m or deeper from a surface of the semiconductor film is obtained by forming the semiconductor film in that the dopant material is doped, the semiconductor film is 100 ?m or less in film thickness with carrier density that is 1×1020/cm3 or less and electron mobility that is 1 cm2/Vs or more.Type: GrantFiled: September 14, 2017Date of Patent: October 19, 2021Assignees: FLOSFIA INC., KYOTO UNIVERSITYInventors: Shizuo Fujita, Takayuki Uchida, Kentaro Kaneko, Masaya Oda, Toshimi Hitora
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Patent number: 11087977Abstract: A new and useful p-type oxide semiconductor with a wide band gap and an enhanced electrical conductivity and the method of manufacturing the p-type oxide semiconductor are provided. A method of manufacturing a p-type oxide semiconductor including: generating atomized droplets by atomizing a raw material solution including iridium and a metal that is different from iridium and optionally contained; carrying the atomized droplets onto a surface of a base by using a carrier gas; causing a thermal reaction of the atomized droplets adjacent to the surface of the base to form a crystal or a mixed crystal of a metal oxide including iridium.Type: GrantFiled: August 29, 2017Date of Patent: August 10, 2021Assignees: FLOSFIA INC, KYOTO UNIVERSITYInventors: Shizuo Fujita, Kentaro Kaneko, Masaya Oda, Toshimi Hitora
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Publication number: 20210013035Abstract: A semiconductor film containing silicon that is evenly doped in the semiconductor film with an enhanced semiconductor property and a method of the semiconductor film using a dopant material containing a complex compound that contains at least silicon and a halogen. The complex compound further contains a hydrocarbon group that is optionally substituted or heterocyclic group that is optionally substituted. A semiconductor film containing Si doped into the semiconductor film as a dopant to a depth that is at least 0.3 ?m or deeper from a surface of the semiconductor film is obtained by forming the semiconductor film in that the dopant material is doped, the semiconductor film is 100 ?m or less in film thickness with carrier density that is 1×1020/cm3 or less and electron mobility that is 1 cm2/Vs or more.Type: ApplicationFiled: September 14, 2017Publication date: January 14, 2021Inventors: Shizuo FUJITA, Takayuki UCHIDA, Kentaro KANEKO, Masaya ODA, Toshimi HITORA
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Publication number: 20200127302Abstract: An electrically-conductive member having sufficient corrosion resistivity even when the electrically-conductive member is exposed to high potential environment and a method of manufacturing the electrically-conductive member are offered. An electrically-conductive member is obtained by a mist CVD method, by forming a metal oxide film on a base member of a separator, and the electrically-conductive member has an active potential range and a passive potential range in an anode polarization curve that is measured in a sulfuric acid aqueous solution having a sulfuric acid concentration that is 5.0×10?4 mol/dm3 at pH3 and having a temperature of 25° C., an anode current density that is 1×10?7 A/cm2 or less in the passive potential range, and the passive potential range reaching to an electric potential that is 1V.Type: ApplicationFiled: April 27, 2018Publication date: April 23, 2020Inventors: Shizuo FUJITA, Masafumi ONO, Takayuki UCHIDA, Kentaro KANEKO, Takashi TANAKA, Toshimi HITORA, Shingo YAGYU
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Patent number: 10580648Abstract: In a first aspect of a present inventive subject matter, a semiconductor device includes a first semiconductor layer that is an electron-supply layer containing as a major component a first semiconductor crystal with a metastable crystal structure; and a second semiconductor layer that is an electron-transit layer containing as a major component a second semiconductor crystal with a hexagonal crystal structure. The first semiconductor crystal contained in the first semiconductor layer is different in composition from the second semiconductor crystal comprised in the second semiconductor layer.Type: GrantFiled: September 4, 2018Date of Patent: March 3, 2020Assignees: FLOSFIA INC., KYOTO UNIVERSITYInventors: Riena Jinno, Shizuo Fujita, Kentaro Kaneko, Tokiyoshi Matsuda, Takashi Shinohe, Toshimi Hitora
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Patent number: 10460934Abstract: According to an aspect of a present inventive subject matter, a crystalline film includes a crystalline metal oxide as a major component, the crystalline film includes a corundum structure, a surface area that is 9 ?m2 or more, and a dislocation density that is less than 5×106 cm?2.Type: GrantFiled: August 21, 2018Date of Patent: October 29, 2019Assignees: FLOSFIA INC., NATIONAL INSTITUTE FOR MATERIALS SCIENCE, KYOTO UNIVERSITY, SAGA UNIVERSITYInventors: Yuichi Oshima, Shizuo Fujita, Kentaro Kaneko, Makoto Kasu, Katsuaki Kawara, Takashi Shinohe, Tokiyoshi Matsuda, Toshimi Hitora
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Publication number: 20190189441Abstract: A new and useful p-type oxide semiconductor with a wide band gap and an enhanced electrical conductivity and the method of manufacturing the p-type oxide semiconductor are provided. A method of manufacturing a p-type oxide semiconductor including: generating atomized droplets by atomizing a raw material solution including iridium and a metal that is different from iridium and optionally contained; carrying the atomized droplets onto a surface of a base by using a carrier gas; causing a thermal reaction of the atomized droplets adjacent to the surface of the base to form a crystal or a mixed crystal of a metal oxide including iridium.Type: ApplicationFiled: August 29, 2017Publication date: June 20, 2019Inventors: Shizuo FUJITA, Kentaro KANEKO, Masaya ODA, Toshimi HITORA
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Publication number: 20190165383Abstract: In a first aspect of a present inventive subject matter, a layered structure includes a base including a first metal as a major component and a second metal that is different from the first metal, and a thermal oxide film of the base arranged on the base and containing an oxide of the first metal and an oxide of the second metal. The first metal contained in the base is more in atomic composition ratio than the second metal contained in the base. The first metal of the oxide contained in the thermal oxide film is less in atomic composition ratio than the first metal contained in the base. The second metal of the oxide contained in the thermal oxide film is equal to or more in atomic ratio than the first metal of the oxide contained in the thermal oxide film.Type: ApplicationFiled: November 21, 2018Publication date: May 30, 2019Inventors: Shizuo FUJITA, Masafumi ONO, Takayuki UCHIDA, Kentaro KANEKO, Takashi TANAKA, Shingo YAGYU, Takashi SHINOHE, Takuto IGAWA
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Publication number: 20190157380Abstract: A new and useful p-type oxide semiconductor with a wide band gap and an enhanced electrical conductivity and the method of manufacturing the p-type oxide semiconductor are provided. A method of manufacturing a p-type oxide semiconductor including: generating atomized droplets by atomizing a raw material solution containing at least a d-block metal in the periodic table and a metal of Group 13 of the periodic table; carrying the atomized droplets onto a surface of a base by using a carrier gas; causing a thermal reaction of the atomized droplets adjacent to the surface of the base under an atmosphere of oxygen to form the p-type oxide semiconductor on the base.Type: ApplicationFiled: June 30, 2017Publication date: May 23, 2019Applicants: FLOSFIA INC., KYOTO UNIVERSITYInventors: Shizuo FUJITA, Kentaro KANEKO, Toshimi HITORA, Tomochika TANIKAWA
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Patent number: 10290762Abstract: Disclosed herein in a method of forming a metal oxide film, which can provide a high-quality metal oxide film while enhancing production efficiency. The method includes the steps of: turning a raw-material solution having a metallic element into a mist, to obtain a raw-material solution mist; turning a reaction aiding solution into a mist, to obtain an aiding-agent mist; feeding the raw-material solution mist and the aiding-agent mist into a mixing vessel, thereby mixing the raw-material solution mist and the aiding-agent mist, to obtain a mixed mist; and feeding the mixed mist onto a back surface of a substrate which is heated, to obtain a metal oxide film.Type: GrantFiled: June 18, 2015Date of Patent: May 14, 2019Assignees: Toshiba Mitsubishi-Electric Industrial Systems Corporation, Kochi Prefectural Public University Corporation, Kyoto UniversityInventors: Takahiro Hiramatsu, Hiroyuki Orita, Toshiyuki Kawaharamura, Shizuo Fujita, Takayuki Uchida
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Publication number: 20190074178Abstract: In a first aspect of a present inventive subject matter, a semiconductor device includes a first semiconductor layer that is an electron-supply layer containing as a major component a first semiconductor crystal with a metastable crystal structure; and a second semiconductor layer that is an electron-transit layer containing as a major component a second semiconductor crystal with a hexagonal crystal structure. The first semiconductor crystal contained in the first semiconductor layer is different in composition from the second semiconductor crystal comprised in the second semiconductor layer.Type: ApplicationFiled: September 4, 2018Publication date: March 7, 2019Inventors: Riena JINNO, Shizuo FUJITA, Kentaro KANEKO, Tokiyoshi MATSUDA, Takashi SHINOHE, Toshimi HITORA
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Publication number: 20190057865Abstract: According to an aspect of a present inventive subject matter, a crystalline film includes a crystalline metal oxide as a major component, the crystalline film includes a corundum structure, a surface area that is 9 ?m2 or more, and a dislocation density that is less than 5×106cm?2.Type: ApplicationFiled: August 21, 2018Publication date: February 21, 2019Inventors: Yuichi OSHIMA, Shizuo FUJITA, Kentaro KANEKO, Makoto KASU, Katsuaki KAWARA, Takashi SHINOHE, Tokiyoshi MATSUDA, Toshimi HITORA
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Publication number: 20190055667Abstract: According to an aspect of a present inventive subject matter, a method for producing a crystalline film includes; gasifying a metal source containing a metal to turn the metal source into a metal-containing raw-material gas; supplying the metal-containing raw-material gas and an oxygen-containing raw-material gas into a reaction chamber onto a substrate including a buffer layer; and supplying a reactive gas into the reaction chamber onto the substrate to form a crystalline film on the substrate under a gas flow of the reactive gas.Type: ApplicationFiled: August 21, 2018Publication date: February 21, 2019Inventors: Yuichi OSHIMA, Shizuo FUJITA, Kentaro KANEKO, Makoto KASU, Katsuaki KAWARA, Takashi SHINOHE, Tokiyoshi MATSUDA, Toshimi HITORA
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Publication number: 20190057866Abstract: According to an aspect of a present inventive subject matter, a crystal includes: a corundum-structured oxide semiconductor as a major component, the corundum-structured oxide semiconductor including gallium and/or indium and doped with a dopant including germanium; a principal plane; a carrier concentration that is 1×1018/cm3 or more; and an electron mobility that is 20 cm2/Vs or more.Type: ApplicationFiled: August 21, 2018Publication date: February 21, 2019Inventors: Yuichi OSHIMA, Shizuo FUJITA, Kentaro KANEKO, Makoto KASU, Katsuaki KAWARA, Takashi SHINOHE, Tokiyoshi MATSUDA, Toshimi HITORA