Patents by Inventor Wataru Tamura
Wataru Tamura 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: 20230357011Abstract: A method for manufacturing Group-III nitride semiconductor nanoparticles includes synthesizing Group-III nitride semiconductor nanoparticles having a particle size of 16 nm or less by reacting materials containing one or more Group-III elements M in a liquid phase, wherein a coordination solvent is used, and trimethyl M is used as at least one Group-III element material among the materials containing one or more Group-III elements M.Type: ApplicationFiled: September 13, 2021Publication date: November 9, 2023Applicant: STANLEY ELECTRIC CO., LTD.Inventors: Takuya KAZAMA, Wataru TAMURA, Yasuyuki MIYAKE, Kenji MORIYAMA, Atsushi MURAMATSU, Kiyoshi KANIE
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Patent number: 11788004Abstract: A quantum dot includes a nano-seed particle having a particular crystal plane exposed, and a first epitaxial layer formed on the particular crystal plane of the nano-seed particle.Type: GrantFiled: March 24, 2021Date of Patent: October 17, 2023Assignee: STANLEY ELECTRIC CO., LTD.Inventors: Takuya Kazama, Wataru Tamura, Yasuyuki Miyake
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Patent number: 11767469Abstract: Provided are group-III nitride nanoparticles that prevent the piezoelectric field caused by strains on the nanoparticles, achieving good luminous efficiency. The group-III nitride nanoparticle represented by AlxGayInzN (0?x, y, z?1) incorporating two crystal structures; a wurtzite structure and a zincblende structure, in a single particle. As another example, the group-III nitride nanoparticle has a core-shell structure with a core and a shell, in which the particle constituting the core contains two crystal structures; the wurtzite structure and the zincblende structure, in the particle. Nanoparticles containing the two crystal structures can be produced by using a phosphorus-containing solvent as a reaction solvent, and the mixture ratio of the two crystal structures, (wurtzite structure)/(zincblende structure), is 20/80 or higher.Type: GrantFiled: September 29, 2021Date of Patent: September 26, 2023Assignee: STANLEY ELECTRIC CO., LTD.Inventors: Takuya Kazama, Wataru Tamura, Yasuyuki Miyake, Takayuki Omori, Atsushi Muramatsu, Kiyoshi Kanie
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Publication number: 20230257281Abstract: A LiMnO2 production method includes generating cubic crystal LiMnO2 nanoparticles by adding an organic solvent, manganese oxide nanoparticles, and lithium amide in a reaction vessel and heating in an inert atmosphere. and a washing and recovering the generated particles. Wurtzite type MnO nanoparticles are preferably used as the manganese oxide. As a result, LiMnO2 nanoparticles that have a substantially similar particle size to wurtzite type MnO nanoparticles can be obtained from an Mn raw material. Nanoparticles having a hollow structure can be obtained by controlling the reaction temperature.Type: ApplicationFiled: August 3, 2021Publication date: August 17, 2023Applicants: STANLEY ELECTRIC CO., LTD., TOHOKU UNIVERSITYInventors: Masafumi NAKAYA, Takuya KAZAMA, Wataru TAMURA, Yasuyuki MIYAKE, Atsushi MURAMATSU, Kiyoshi KANIE
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Publication number: 20220388862Abstract: Single-phase manganese oxide particles having a wurtzite crystal structure. The particles can be obtained by thermally decomposing a compound containing manganese. In this procedure, a reducing agent consisting of at least one of a polyol-based material and an ethylene glycol stearate-based material is added as an additive to the reaction system. It is heated at a first temperature (200° C. or lower) under a reduced pressure atmosphere, then the temperature is raised, and the product is heated at a temperature higher than the first temperature under an inert gas atmosphere.Type: ApplicationFiled: November 9, 2020Publication date: December 8, 2022Applicant: STANLEY ELECTRIC CO., LTD.Inventors: Takuya KAZAMA, Wataru TAMURA, Yasuyuki MIYAKE, Kenji MORIYAMA, Atsushi MURAMATSU, Kiyoshi KANIE
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Publication number: 20220208458Abstract: A capacitor includes a bus bar. The bus bar includes a bus bar body member and a terminal formation member configured to be superposed on and fixed to a terminal formation part of the bus bar body member. In the terminal formation part, a plurality of first connection terminal parts are formed so as to be arranged in one direction, by portions of the terminal formation part being cut and raised. In the terminal formation member, a plurality of second connection terminal parts are formed so as to be arranged in one direction, by portions of the terminal formation member being cut and raised, and second openings are formed in places where the portions have been cut and raised. The first connection terminal parts and the second connection terminal parts are alternately arranged in one direction, by the first connection terminal parts being passed through the second openings.Type: ApplicationFiled: March 15, 2022Publication date: June 30, 2022Inventors: Yoshiki KAMIMURA, Takeshi IMAMURA, Akihiro MORIKAWA, Wataru TAMURA
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Publication number: 20220098480Abstract: Provided are group-III nitride nanoparticles that prevent the piezoelectric field caused by strains on the nanoparticles, achieving good luminous efficiency. The group-III nitride nanoparticle represented by AlxGayInzN (0?x, y, z?1) incorporating two crystal structures; a wurtzite structure and a zincblende structure, in a single particle. As another example, the group-III nitride nanoparticle has a core-shell structure with a core and a shell, in which the particle constituting the core contains two crystal structures; the wurtzite structure and the zincblende structure, in the particle. Nanoparticles containing the two crystal structures can be produced by using a phosphorus-containing solvent as a reaction solvent, and the mixture ratio of the two crystal structures, (wurtzite structure)/(zincblende structure), is 20/80 or higher.Type: ApplicationFiled: September 29, 2021Publication date: March 31, 2022Applicant: STANLEY ELECTRIC CO., LTD.Inventors: Takuya KAZAMA, Wataru TAMURA, Yasuyuki MIYAKE, Takayuki OMORI, Atsushi MURAMATSU, Kiyoshi KANIE
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Publication number: 20210207025Abstract: A quantum dot includes a nano-seed particle having a particular crystal plane exposed, and a first epitaxial layer formed on the particular crystal plane of the nano-seed particle.Type: ApplicationFiled: March 24, 2021Publication date: July 8, 2021Applicant: STANLEY ELECTRIC CO., LTD.Inventors: Takuya KAZAMA, Wataru TAMURA, Yasuyuki MIYAKE
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Patent number: 10988688Abstract: A quantum dot manufacturing method comprises (a) dispersing, in a solvent, nano-seed particles whose crystal planes are exposed, and (b) growing semiconductor layers on the exposed crystal planes of the nano-seed particles in the solvent.Type: GrantFiled: August 1, 2017Date of Patent: April 27, 2021Assignee: STANLEY ELECTRIC CO., LTD.Inventors: Takuya Kazama, Wataru Tamura, Yasuyuki Miyake
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Patent number: 10524354Abstract: An electronic device includes a transmission line and a circuit board. The transmission line includes a signal conductor, a base material, a first external connection conductor, a second external connection conductor, and a ground conductor, and defines a stripline. The circuit board includes a first mounting land conductor, a second mounting land conductor, and a radiation reduction conductor. The first mounting land conductor and the second mounting land conductor are provided in a concave portion on the surface of the circuit board, and are respectively connected to the first external connection conductor and the second external connection conductor. The radiation reduction conductor is provided on the lateral surface of the concave portion in which the transmission line is disposed, and is in contact with or adjacent to the first lateral surface and the second lateral surface of the base material.Type: GrantFiled: August 23, 2018Date of Patent: December 31, 2019Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Shinya Oguri, Wataru Tamura, Kanto Iida, Kuniaki Yosui, Isamu Morita
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Patent number: 10338382Abstract: Implementations of an in-vehicle display system may include: a first display device configured to irradiate a first area of a windshield of a vehicle with a first light constituting a first image and to display the first image as a virtual image of the first image in front of the first area; a second display device configured to display a second image as a real image in a second area of the windshield that is wider than the first area; and a control device configured to control the first display device and the second display device based on a travel state of the vehicle.Type: GrantFiled: April 20, 2018Date of Patent: July 2, 2019Assignee: ALPINE ELECTRONICS, INC.Inventors: Wataru Tamura, Tsuyoshi Kimura, Kenji Shida, Yu Watanabe
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Patent number: 10340572Abstract: An antenna module includes a resin multilayer substrate including a plurality of base materials that are flexible. The resin multilayer substrate includes a rigid portion at which a first number of stacked layers of the base materials is relatively large and a flexible portion at which a second number of stacked layers of the base materials is relatively small. A radiating element including a conductor pattern is provided at the rigid portion. A transmission line including a conductor pattern and electrically connected to the radiating element is provided at the flexible portion. A frame-shaped conductor that surrounds the radiating element when viewed in a direction in which the base materials are stacked is provided at either the rigid portion or the flexible portion, or both the rigid portion and the flexible portion.Type: GrantFiled: September 27, 2018Date of Patent: July 2, 2019Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Shinya Oguri, Wataru Tamura, Fumie Matsuda, Takahiro Baba
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Publication number: 20190027801Abstract: An antenna module includes a resin multilayer substrate including a plurality of base materials that are flexible. The resin multilayer substrate includes a rigid portion at which a first number of stacked layers of the base materials is relatively large and a flexible portion at which a second number of stacked layers of the base materials is relatively small. A radiating element including a conductor pattern is provided at the rigid portion. A transmission line including a conductor pattern and electrically connected to the radiating element is provided at the flexible portion. A frame-shaped conductor that surrounds the radiating element when viewed in a direction in which the base materials are stacked is provided at either the rigid portion or the flexible portion, or both the rigid portion and the flexible portion.Type: ApplicationFiled: September 27, 2018Publication date: January 24, 2019Inventors: Shinya OGURI, Wataru TAMURA, Fumie MATSUDA, Takahiro BABA
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Publication number: 20190025577Abstract: Implementations of an in-vehicle display system may include: a first display device configured to irradiate a first area of a windshield of a vehicle with a first light constituting a first image and to display the first image as a virtual image of the first image in front of the first area; a second display device configured to display a second image as a real image in a second area of the windshield that is wider than the first area; and a control device configured to control the first display device and the second display device based on a travel state of the vehicle.Type: ApplicationFiled: April 20, 2018Publication date: January 24, 2019Applicant: Alpine Electronics, Inc.Inventors: Wataru Tamura, Tsuyoshi Kimura, Kenji Shida, Yu Watanabe
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Patent number: 10164310Abstract: A first signal line is closer to a second ground conductor than a second signal line and, hence, crosstalk between the first and second signal lines is unlikely to be generated. By providing first opening portions in the second ground conductor, capacitive coupling between the first and second signal lines is reduced. Hence, in a transmission line including the first signal line, an increase in the capacitance due to the increased width of the first signal line is cancelled out by a decrease in the capacitance due to the increased distance from the first ground conductor and the first opening portions. Further, the width of the high-frequency transmission line need not be large. Further, since the capacitance is reduced by the first and second opening portions, the distances between the first ground conductor and the first and second signal lines are shortened.Type: GrantFiled: June 26, 2015Date of Patent: December 25, 2018Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Nobuo Ikemoto, Takahiro Baba, Fumie Matsuda, Wataru Tamura
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Publication number: 20180368252Abstract: An electronic device includes a transmission line and a circuit board. The transmission line includes a signal conductor, a base material, a first external connection conductor, a second external connection conductor, and a ground conductor, and defines a stripline. The circuit board includes a first mounting land conductor, a second mounting land conductor, and a radiation reduction conductor. The first mounting land conductor and the second mounting land conductor are provided in a concave portion on the surface of the circuit board, and are respectively connected to the first external connection conductor and the second external connection conductor. The radiation reduction conductor is provided on the lateral surface of the concave portion in which the transmission line is disposed, and is in contact with or adjacent to the first lateral surface and the second lateral surface of the base material.Type: ApplicationFiled: August 23, 2018Publication date: December 20, 2018Inventors: Shinya OGURI, Wataru TAMURA, Kanto IIDA, Kuniaki YOSUI, Isamu MORITA
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Patent number: 10122058Abstract: An antenna module includes a resin multilayer substrate including a plurality of base materials that are flexible. The resin multilayer substrate includes a rigid portion at which a first number of stacked layers of the base materials is relatively large and a flexible portion at which a second number of stacked layers of the base materials is relatively small. A radiating element including a conductor pattern is provided at the rigid portion. A transmission line including a conductor pattern and electrically connected to the radiating element is provided at the flexible portion. A frame-shaped conductor that surrounds the radiating element when viewed in a direction in which the base materials are stacked is provided at either the rigid portion or the flexible portion, or both the rigid portion and the flexible portion.Type: GrantFiled: June 9, 2017Date of Patent: November 6, 2018Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Shinya Oguri, Wataru Tamura, Fumie Matsuda, Takahiro Baba
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Patent number: 10116834Abstract: An image reading apparatus includes an image capturing module for capturing an image of a document, a light source, a movable light reflecting surface having a white color, a driving module for moving the light reflecting surface into a first position at which the light reflecting surface reflects light from the light source and a second position at which the light reflecting surface does not reflect light from the light source, and a control module for controlling the driving module to move the light reflecting surface. The control module determines the second position by moving the light reflecting surface by a predetermined quantity from the first position determined based on an image obtained by the image capturing module.Type: GrantFiled: June 6, 2016Date of Patent: October 30, 2018Assignee: PFU LIMITEDInventors: Shogo Yoshita, Wataru Tamura
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Patent number: 10032955Abstract: A quantum dot having core-shell structure, including a core formed of ZnOzS1-z of wurtzite crystal structure of hexagonal crystal system; a first shell covering the core, and formed of AlxGayIn1-x-yN of wurtzite crystal structure of hexagonal crystal system; and a second shell covering the first shell, and formed of ZnOvS1-v of wurtzite crystal structure of hexagonal crystal system. At least one of v, x, y, and z is not zero and is not one; differences between the lattice constants along a-axis of the core, the first shell and the second shell are not greater than 1%; and the core, the first shell and the second shell form band offset structure of type II.Type: GrantFiled: September 7, 2017Date of Patent: July 24, 2018Assignee: STANLEY ELECTRIC CO., LTD.Inventors: Takuya Kazama, Wataru Tamura, Yasuyuki Miyake
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Patent number: 9992886Abstract: A circuit board is sealed and housed in a casing including a base and a cover, a connector housing including a partition wall is mounted on the circuit board, and an electrical connection between the interior and the exterior of the casing is established. A water-repellent filter is fixed to an inner surface of the partition wall, an outer surface portion of the water-repellent filter is opened to atmosphere via the breath ventilation hole, and an atmospheric opening surface thereof is formed such that the atmospheric opening surface being wetted directly with water is avoided by a poured water blocking wall and water barrier walls. A position where the poured water blocking wall is provided is changed by an insert mold in response to the direction of the mounting surface of the base.Type: GrantFiled: July 7, 2016Date of Patent: June 5, 2018Assignees: Mitsubishi Electric Corporation, YAZAKI CORPORATIONInventors: Mitsunori Nishida, Osamu Nishizawa, Wataru Tamura, Keishi Jinno, Kouichi Ohyama