Patents by Inventor Takeshi Nakao
Takeshi Nakao 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: 11947360Abstract: A server device 2 stores a distribution map DB 21 including autonomous driving regulatory information Ir for regulating autonomous driving of a vehicle in a predetermined section, and sends map data D1 including the autonomous driving regulatory information Ir to a driving assistance device 1. Then, the driving assistance device 1 receives the map data D1 including the autonomous driving regulatory information Ir and controls the autonomous driving of the vehicle based on the received autonomous driving regulatory information Ir.Type: GrantFiled: December 10, 2021Date of Patent: April 2, 2024Assignees: PIONEER CORPORATION, GEOTECHNOLOGIES, INC.Inventors: Takeshi Koda, Kenji Mito, Kazuhiro Nakao, Makoto Hatano
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Publication number: 20240056050Abstract: An acoustic wave device includes a piezoelectric board including a piezoelectric layer with a first principal surface and a second principal surface opposed to each other, an intermediate layer on the first principal surface or the second principal surface of the piezoelectric layer, and a functional electrode on the intermediate layer. A material of the intermediate layer is a same type as a material of the piezoelectric layer, and an electromechanical coupling coefficient of the intermediate layer is smaller than an electromechanical coupling coefficient of the piezoelectric layer.Type: ApplicationFiled: October 26, 2023Publication date: February 15, 2024Inventors: Tetsuya KIMURA, Yutaka KISHIMOTO, Takeshi NAKAO
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Publication number: 20240030890Abstract: An acoustic wave device includes a piezoelectric substrate including a support and a piezoelectric layer on the support and including first and second main surfaces, one or more functional electrodes on the first or second main surfaces, and including at least one pair of electrodes, a first support surrounding the functional electrodes, one or more second supports on the piezoelectric substrate and on a portion surrounded by the first support, and a cover on the first and second supports. A direction in which adjacent electrodes face each other is an electrode facing direction, a region in which the adjacent electrodes overlap each other when viewed from the electrode facing direction is an intersecting region, a direction in which at least one pair of electrodes extend is an electrode extending direction, and the second support at least partially overlaps the intersecting region when viewed from the electrode extending direction.Type: ApplicationFiled: September 28, 2023Publication date: January 25, 2024Inventors: Takeshi NAKAO, Seiji KAI, Hisashi YAMAZAKI
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Publication number: 20240030893Abstract: An acoustic wave device includes a piezoelectric substrate including a support and a piezoelectric layer provided on the support and including first and second main surfaces, one or more functional electrodes provided on the first or second main surface, and including at least one pair of electrodes, a first support provided on the piezoelectric substrate so as to surround the functional electrodes, one or more second supports provided on the piezoelectric substrate and on a portion surrounded by the first support, and a cover on the first support and the second supports. A direction in which adjacent electrodes face each other is an electrode facing direction, a region in which the adjacent electrodes overlap each other when viewed from the electrode facing direction is an intersecting region, and the second support at least partially overlaps the intersecting region when viewed from the electrode facing direction.Type: ApplicationFiled: September 28, 2023Publication date: January 25, 2024Inventors: Takeshi NAKAO, Seiji KAI, Hisashi YAMAZAKI
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Publication number: 20240014799Abstract: An acoustic wave device includes a piezoelectric substrate including a support including a support substrate and a piezoelectric layer on the support and including first and second main surfaces, a functional electrode on the first or second main surface and including a pair of electrodes, a first support on the piezoelectric substrate and surrounding the functional electrode, at least one second support on the piezoelectric substrate in a portion surrounded by the first support, and a lid on the first and second supports. The second support does not overlap an intersecting region when viewed from an electrode extending direction and from an electrode facing direction.Type: ApplicationFiled: September 19, 2023Publication date: January 11, 2024Inventors: Takeshi NAKAO, Seiji KAI, Hisashi YAMAZAKI
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Publication number: 20240007076Abstract: An acoustic wave device includes a piezoelectric substrate including a support including a support substrate and a piezoelectric layer on the support, a functional electrode on the piezoelectric layer, at least one support, and a lid. One of the at least one support surrounds the functional electrode on the piezoelectric substrate and the lid is provided on the support. A first cavity is provided in the support. The first cavity overlaps at least a portion of the functional electrode in plan view. A second cavity is surrounded by the piezoelectric substrate, a support provided between the piezoelectric substrate and the lid, and the lid. A height of the first cavity is greater than a height of the second cavity.Type: ApplicationFiled: September 19, 2023Publication date: January 4, 2024Inventors: Seiji KAI, Hisashi YAMAZAKI, Takeshi NAKAO, Takuya KOYANAGI
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Publication number: 20230155565Abstract: An acoustic wave device includes a support substrate, a piezoelectric layer on the support substrate, a functional electrode on the piezoelectric layer, first and second electrode films on the piezoelectric layer, facing each other, and having different electric potentials from each other, and a dielectric film between at least one of at least a portion of the first electrode film and the piezoelectric layer and at least a portion of the second electrode film and the piezoelectric layer.Type: ApplicationFiled: January 13, 2023Publication date: May 18, 2023Inventors: Minefumi OUCHI, Takeshi NAKAO
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Publication number: 20220321097Abstract: An acoustic wave device includes a support including a support substrate, a piezoelectric layer on the support, a functional electrode at the piezoelectric layer, a frame-shaped support frame on the piezoelectric layer and surrounding the functional electrode in a plan view in a stacking direction of the support and the piezoelectric layer, and a lid covering an opening of the support frame, wherein the support includes a first cavity at a position overlapping at least a portion of the functional electrode in the plan view, a second cavity defined by the piezoelectric layer, the support frame, and the lid between the piezoelectric layer and the lid, the piezoelectric layer includes a through hole communicating with the first and second cavities, and the first and second cavities are under vacuum.Type: ApplicationFiled: March 29, 2022Publication date: October 6, 2022Inventors: Hisashi YAMAZAKI, Seiji KAI, Takeshi NAKAO
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Publication number: 20220321091Abstract: An acoustic wave device includes a support, a piezoelectric layer on the support, a functional electrode at the piezoelectric layer, a frame-shaped support frame on the piezoelectric layer and surrounding the functional electrode in plan view in a stacking direction of the support and the piezoelectric layer, and a lid covering an opening of the support frame, wherein the support includes a first cavity overlapping at least a portion of the functional electrode in the plan view, a second cavity defined by the piezoelectric layer, the support frame, and the lid between the piezoelectric layer and the lid, the piezoelectric layer includes a through hole communicating with the first and second cavities, and a gas is provided in the first and second cavities.Type: ApplicationFiled: March 29, 2022Publication date: October 6, 2022Inventors: Hisashi YAMAZAKI, Seiji KAI, Takeshi NAKAO
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Patent number: 11441449Abstract: A securing tool for a heat retention block covering a turbine casing main body includes: a securing rod, one end of which has an engaging portion with a protrusion; and a socket. The socket includes a guide groove, into which the protrusion of the securing rod is inserted, and a recessed groove. The guide groove includes a first guide groove, which extends in the socket axis direction from a starting end to a terminal end, and a second guide groove, the starting end of which is connected to the terminal end, and which extends from the starting end to a terminal end in a circumferential direction relative to the socket axis. The second guide groove is connected to the recessed groove.Type: GrantFiled: May 11, 2018Date of Patent: September 13, 2022Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Hyota Abe, Yuji Kurokawa, Takuya Izumi, Takeshi Nakao, Keisuke Ide, Osamu Koga
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Publication number: 20220029599Abstract: An acoustic wave device includes a support substrate including silicon, a piezoelectric layer in which a rotated Y-cut X-propagation lithium tantalate is included, and an IDT electrode. A film thickness of the piezoelectric layer is less than or equal to about 1?. When ?111 is an angle between a directional vector k111, and a direction of silicon and n is an arbitrary integer, the angle ?111 is in a range of about 0°+120°×n??111?45°+120°×n or in a range of about 75°+120°×n??111?120°+120°×n when the IDT electrode is on a positive surface of the piezoelectric layer and the angle ?111 is in a range of about 15°+120°×n??111?105°+120°×n when the IDT electrode is on the negative surface of the piezoelectric layer.Type: ApplicationFiled: October 4, 2021Publication date: January 27, 2022Inventors: Hideki IWAMOTO, Akira MICHIGAMI, Tsutomu TAKAI, Takeshi NAKAO
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Publication number: 20210408994Abstract: An acoustic wave device includes a support substrate, a piezoelectric film, a functional electrode, and a support. The support substrate includes a cavity. The piezoelectric film is provided on the support substrate to cover the cavity. The functional electrode is provided on the piezoelectric film to overlap the cavity when viewed in a plan view. The support is in the cavity of the support substrate to support the piezoelectric film. The functional electrode includes electrodes arranged in a direction crossing the thickness direction of the piezoelectric film. The electrodes include a first electrode and a second electrode. The first electrode and the second electrode oppose each other in a direction crossing the thickness direction of the piezoelectric film and are connected to different potentials. Adjacent ones of the electrodes overlap each other in a direction orthogonal to a longitudinal direction of the first electrode.Type: ApplicationFiled: September 10, 2021Publication date: December 30, 2021Inventors: Shou NAGATOMO, Hideki IWAMOTO, Takeshi NAKAO
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Publication number: 20210277798Abstract: A securing tool for a heat retention block covering a turbine casing main body includes: a securing rod, one end of which has an engaging portion with a protrusion; and a socket. The socket includes a guide groove, into which the protrusion of the securing rod is inserted, and a recessed groove. The guide groove includes a first guide groove, which extends in the socket axis direction from a starting end to a terminal end, and a second guide groove, the starting end of which is connected to the terminal end, and which extends from the starting end to a terminal end in a circumferential direction relative to the socket axis. The second guide groove is connected to the recessed groove.Type: ApplicationFiled: May 11, 2018Publication date: September 9, 2021Inventors: Hyota ABE, Yuji KUROKAWA, Takuya IZUMI, Takeshi NAKAO, Keisuke IDE, Osamu KOGA
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Patent number: 9210388Abstract: In a laser source module aligning laser beams from laser sources for three colors, red, green, and blue on a single combined beam optical axis, decreasing relative displacements of beam spots of three colors, occurring due to thermal deformation by temperature rise, is achieved by a laser source module including plural laser sources, each incorporating a laser having a laser chip installed on a heat sink and a lens converting a light radiated from the laser into a laser beam, and a beam combining unit aligning the laser beams from the laser sources on a single combined beam optical axis, wherein the lasers in at least two or more ones of the laser sources are arranged so that their laser beams will be decentered toward a same direction on the combined beam optical axis upon displacement of an emission point of the laser chip away from the heat sink.Type: GrantFiled: March 26, 2012Date of Patent: December 8, 2015Assignee: HITACHI-LG DATA STORAGE, INC.Inventors: Atsushi Kazama, Takeshi Nakao, Yasuo Amano
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Patent number: 9196818Abstract: A boundary acoustic wave device includes an LiTaO3 piezoelectric substrate, a first dielectric medium layer disposed on the piezoelectric substrate, a second dielectric medium layer disposed on the first medium layer and having a sound velocity different from the first medium layer, and an interdigital electrode disposed at the boundary between the piezoelectric substrate and the first medium layer. The sound velocity of the first medium layer is less than the sound velocity of LiTaO3. The sound velocity of the second medium layer is greater than the sound velocity of LiTaO3. The inequality (h/?)×a?0.05 is satisfied, where H is the thickness of the first medium layer, h is the thickness of the interdigital electrode, ? is the period of electrode fingers of the interdigital electrode, and a is the ratio of the density of a metal of the interdigital electrode to the density of Au.Type: GrantFiled: March 18, 2013Date of Patent: November 24, 2015Assignee: Murata Manufacturing Co., Ltd.Inventors: Takashi Yamane, Takeshi Nakao
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Patent number: 9036233Abstract: A laser light source module includes a housing and a heat sink that is thermally connected to the housing. The housing includes a laser element that emits laser light, a laser holder that is made of metal to hold the laser element, a laser light receiving element that receives laser beam from the laser element, a mirror element that reflects the laser light to scan a screen, an optical element that is disposed on the optical axis of the laser light. The laser holder is thermally connected to the housing with a thermally conductive member. A protrusion is formed on the thermally conductive member. The protrusion and the springiness of the thermally conductive member are used to press the laser holder against the housing in the same direction as the direction of laser light emission.Type: GrantFiled: February 28, 2013Date of Patent: May 19, 2015Assignee: HITACHI-LG DATA STORAGE, INC.Inventors: Wataru Sato, Takeshi Nakao
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Patent number: 8810104Abstract: A surface acoustic wave device includes a piezoelectric substrate, at least one interdigital transducer (IDT) electrode provided on the piezoelectric substrate, and an insulator layer to improve a temperature characteristic arranged so as to cover the IDT electrode. When a surface of the insulator layer is classified into a first surface region under which the IDT electrode is positioned and a second surface region under which no IDT electrode is positioned, the surface of the insulator layer in at least one portion of the second surface region is higher than the surface of the insulator layer from the piezoelectric substrate in at least one portion of the first surface region by at least about 0.001?, where the wavelength of an acoustic wave is ?.Type: GrantFiled: May 17, 2010Date of Patent: August 19, 2014Assignee: Murata Manufacturing Co., Ltd.Inventors: Shunsuke Kido, Takeshi Nakao, Yasuharu Nakai, Kenji Nishiyama, Michio Kadota
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Patent number: 8693075Abstract: Optical beams emitted by optical sources are incident on a mirror surface of a scan mirror in a substantially vertical direction and reflected in a substantially vertical direction by the scan mirror. The mirror surface of the scan mirror is driven to repeatedly rotate two-dimensionally by a predetermined scan angle by a scan mirror drive circuit. A polarized beam splitter causes the optical beam emitted by the optical source to be incident on the scan mirror through a quarter wave plate, and outputs the optical beam that has been reflected by the scan mirror and passed through the quarter wave plate toward the screen. A scan angle expander is arranged on the output side of the polarized beam splitter, whereby the scan angle of the optical beam is increased by N times.Type: GrantFiled: April 19, 2012Date of Patent: April 8, 2014Assignee: Hitachi Media Electronics Co., Ltd.Inventors: Takeshi Nakao, Kunikazu Ohnishi, Hiromi Kita, Norio Hosaka
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Patent number: 8677582Abstract: A method for fabricating an acoustic wave device includes the steps of forming an insulating material layer on a piezoelectric substrate, forming a patterned photoresist on the insulating material layer, patterning the insulating material layer, and forming a piezoelectric-substrate exposed depression corresponding to a region where an interdigital transducer electrode is to be formed on a first insulator layer composed of the insulating material layer, depositing a metallic material on the piezoelectric substrate to form the interdigital transducer electrode in the piezoelectric-substrate exposed depression such that the overall interdigital transducer electrode is thinner than the first insulator layer and coating the photoresist with a metallic material, removing the photoresist and the metallic material on the photoresist, and depositing a second insulator layer so as to cover the interdigital transducer electrode and the first insulator layer.Type: GrantFiled: February 16, 2010Date of Patent: March 25, 2014Assignee: Murata Manufacturing Co., Ltd.Inventors: Shunsuke Kido, Takeshi Nakao, Yasuharu Nakai, Kenji Nishiyama, Michio Kadota
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Patent number: 8436510Abstract: A boundary acoustic wave device includes a piezoelectric substrate made of single-crystalline LiTaO3, a first medium layer disposed on the piezoelectric substrate and made of a dielectric, a second medium layer disposed on the first medium layer and made of a dielectric having a sound velocity different from that of the first medium layer, and at least one interdigital electrode disposed at the boundary between the piezoelectric substrate and the first medium layer. The sound velocity of the first medium layer is less than the sound velocity of LiTaO3. The sound velocity of the second medium layer is greater than the sound velocity of LiTaO3. The inequality (h/?)×a?0.05 is satisfied, where H is the thickness of the first medium layer, h is the thickness of the interdigital electrode, ? is the period of electrode fingers of the interdigital electrode, and a is the ratio of the density of a metal of the interdigital electrode to the density of Au.Type: GrantFiled: October 28, 2010Date of Patent: May 7, 2013Assignee: Murata Manufacturing Co., Ltd.Inventors: Takashi Yamane, Takeshi Nakao