Patents by Inventor TOMOYA MIYATA
TOMOYA MIYATA 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: 11906374Abstract: Provided is a measurement method including measuring, by using a piezoelectric sheet sensor in contact with a measurement object, vibration transmitted from the measurement object to the piezoelectric sheet sensor and measuring pressing force between the measurement object and the piezoelectric sheet sensor.Type: GrantFiled: February 6, 2019Date of Patent: February 20, 2024Assignee: YAMAHA CorporationInventor: Tomoya Miyata
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Patent number: 11595752Abstract: An electroacoustic transducer includes a housing, one or more partition walls, a diaphragm, and a tube. The one or more partition walls divide an inner space of the housing into a plurality of spaces, such that a volume of a first of the plurality of spaces is different from a volume of a second of the plurality of spaces except the first of the plurality of spaces. The diaphragm is disposed in the housing, such that one surface thereof faces the plurality of spaces. The tube establishes communication between a sound wave emission opening that is open to an outer space of the housing and each of the plurality of spaces.Type: GrantFiled: May 28, 2021Date of Patent: February 28, 2023Assignee: Yamaha CorporationInventors: Yu Tsuchihashi, Tomoya Miyata
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Patent number: 11399230Abstract: A electroacoustic transducer includes a housing, a piezoelectric element, a partition wall, a first tube, and a second tube. The piezoelectric element is disposed in the housing and includes a porous film and a pair of electrodes that sandwich the porous film therebetween. The partition wall divides an inner space of the housing into a first space closer to one of the pair of electrodes, and a second space closer to another of the pair of electrodes. The first tube establishes communication between a sound wave emission opening that is open to an outer space of the housing and the first space. The second tube establishes communication between the sound wave emission opening and the second space.Type: GrantFiled: May 28, 2021Date of Patent: July 26, 2022Assignee: Yamaha CorporationInventors: Yu Tsuchihashi, Tomoya Miyata
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Patent number: 11346709Abstract: A sensor unit capable of protecting a piezoelectric element and detecting vibration and sound is provided. The sensor unit comprises a sheet-like piezoelectric element having a porous layer, and a sound propagation sheet covering at least one face of the piezoelectric element and permitting transmission of sound from a first face toward a second face of the sound propagation sheet. A difference in acoustic pressure level between the sound incident on the sound propagation sheet and the transmitted sound is preferably no greater than 10 dB. A surface density of the sound propagation sheet is preferably from 0.03 g/m2 to 100 g/m2. The sound propagation sheet is preferably flexible and preferably has voids. The sensor unit preferably further comprises a sound insulation sheet covering another face of the piezoelectric element and substantially preventing transmission of sound from a second face toward a first face of the sound insulation sheet.Type: GrantFiled: May 29, 2020Date of Patent: May 31, 2022Assignees: YAMAHA CORPORATION, YUPO CORPORATIONInventors: Tomoya Miyata, Kunio Hiyama, Seiichiro Iida, Hiroshi Koike, Hidekazu Kodama
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Publication number: 20220127442Abstract: A composition for an acoustic member includes a non-diene butyl rubber, and a liquid polymer having a molecular weight of 1,000 to 120,000. A difference in an SP value between the liquid polymer and the butyl rubber is within ±0.5.Type: ApplicationFiled: January 5, 2022Publication date: April 28, 2022Inventor: Tomoya MIYATA
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Patent number: 11284200Abstract: A transducer includes a hollow housing, and a piezoelectric sheet which is disposed on a first portion of an inner wall of the housing, and a block which is disposed on a second portion of the inner wall of the housing.Type: GrantFiled: April 17, 2020Date of Patent: March 22, 2022Assignee: YAMAHA CORPORATIONInventors: Yu Tsuchihashi, Tomoya Miyata
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Publication number: 20210289288Abstract: An electroacoustic transducer includes a housing, one or more partition walls, a diaphragm, and a tube. The one or more partition walls divide an inner space of the housing into a plurality of spaces, such that a volume of a first of the plurality of spaces is different from a volume of a second of the plurality of spaces except the first of the plurality of spaces. The diaphragm is disposed in the housing, such that one surface thereof faces the plurality of spaces. The tube establishes communication between a sound wave emission opening that is open to an outer space of the housing and each of the plurality of spaces.Type: ApplicationFiled: May 28, 2021Publication date: September 16, 2021Inventors: Yu TSUCHIHASHI, Tomoya MIYATA
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Publication number: 20210289287Abstract: A electroacoustic transducer includes a housing, a piezoelectric element, a partition wall, a first tube, and a second tube. The piezoelectric element is disposed in the housing and includes a porous film and a pair of electrodes that sandwich the porous film therebetween. The partition wall divides an inner space of the housing into a first space closer to one of the pair of electrodes, and a second space closer to another of the pair of electrodes. The first tube establishes communication between a sound wave emission opening that is open to an outer space of the housing and the first space. The second tube establishes communication between the sound wave emission opening and the second space.Type: ApplicationFiled: May 28, 2021Publication date: September 16, 2021Inventors: Yu TSUCHIHASHI, Tomoya MIYATA
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Publication number: 20210199517Abstract: Provided is a measurement method including measuring, by using a piezoelectric sheet sensor in contact with a measurement object, vibration transmitted from the measurement object to the piezoelectric sheet sensor and measuring pressing force between the measurement object and the piezoelectric sheet sensor.Type: ApplicationFiled: February 6, 2019Publication date: July 1, 2021Inventor: Tomoya MIYATA
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Publication number: 20200309592Abstract: A sensor unit capable of protecting a piezoelectric element and detecting vibration and sound is provided. The sensor unit comprises a sheet-like piezoelectric element having a porous layer, and a sound propagation sheet covering at least one face of the piezoelectric element and permitting transmission of sound from a first face toward a second face of the sound propagation sheet. A difference in acoustic pressure level between the sound incident on the sound propagation sheet and the transmitted sound is preferably no greater than 10 dB. A surface density of the sound propagation sheet is preferably from 0.03 g/m2 to 100 g/m2. The sound propagation sheet is preferably flexible and preferably has voids. The sensor unit preferably further comprises a sound insulation sheet covering another face of the piezoelectric element and substantially preventing transmission of sound from a second face toward a first face of the sound insulation sheet.Type: ApplicationFiled: May 29, 2020Publication date: October 1, 2020Inventors: Tomoya MIYATA, Kunio HIYAMA, Seiichiro IIDA, Hiroshi KOIKE, Hidekazu KODAMA
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Publication number: 20200245074Abstract: A transducer includes a hollow housing, and a piezoelectric sheet which is disposed on a first portion of an inner wall of the housing, and a block which is disposed on a second portion of the inner wall of the housing.Type: ApplicationFiled: April 17, 2020Publication date: July 30, 2020Inventors: Yu TSUCHIHASHI, Tomoya MIYATA
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Patent number: 10670453Abstract: A sensor unit capable of protecting a piezoelectric element and detecting vibration and sound is provided. The sensor unit comprises a sheet-like piezoelectric element having a porous layer, and a sound propagation sheet covering at least one face of the piezoelectric element and permitting transmission of sound from a first face toward a second face of the sound propagation sheet. A difference in acoustic pressure level between the sound incident on the sound propagation sheet and the transmitted sound is preferably no greater than 10 dB. A surface density of the sound propagation sheet is preferably from 0.03 g/m2 to 100 g/m2. The sound propagation sheet is preferably flexible and preferably has voids. The sensor unit preferably further comprises a sound insulation sheet covering another face of the piezoelectric element and substantially preventing transmission of sound from a second face toward a first face of the sound insulation sheet.Type: GrantFiled: February 28, 2018Date of Patent: June 2, 2020Assignees: YAMAHA CORPORATION, YUPO CORPORATIONInventors: Tomoya Miyata, Kunio Hiyama, Seiichiro Iida, Hiroshi Koike, Hidekazu Kodama
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Publication number: 20200154213Abstract: A transducer includes a housing, and a piezoelectric element that is disposed inside the housing and that has a porous film. The piezoelectric element is bent or curved.Type: ApplicationFiled: January 10, 2020Publication date: May 14, 2020Inventors: Tomoya MIYATA, Akira MIKI, Yu TSUCHIHASHI
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Patent number: 10629170Abstract: The board for a musical instrument according to the present disclosure includes: a first base layer; and a pair of first reinforcement layers laminated on both face sides of the first base layer, in which the first reinforcement layers includes a fiber and a binder, and the fiber is a polyparaphenylenebenzobisoxazole fiber, a liquid crystal polyester fiber, an aramid fiber, a polyarylate fiber, an ultra high-molecular weight polyethylene fiber, a polyethylene naphthalate fiber or a glass fiber.Type: GrantFiled: April 25, 2019Date of Patent: April 21, 2020Assignee: Yamaha CorporationInventors: Asumi Matsuda, Tomoya Miyata, Kazuyuki Kobayashi
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Publication number: 20190251932Abstract: The board for a musical instrument according to the present disclosure includes: a first base layer; and a pair of first reinforcement layers laminated on both face sides of the first base layer, in which the first reinforcement layers includes a fiber and a binder, and the fiber is a polyparaphenylenebenzobisoxazole fiber, a liquid crystal polyester fiber, an aramid fiber, a polyarylate fiber, an ultra high-molecular weight polyethylene fiber, a polyethylene naphthalate fiber or a glass fiber.Type: ApplicationFiled: April 25, 2019Publication date: August 15, 2019Inventors: Asumi MATSUDA, Tomoya MIYATA, Kazuyuki KOBAYASHI
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Publication number: 20180209838Abstract: A sensor unit capable of protecting a piezoelectric element and detecting vibration and sound is provided. The sensor unit comprises a sheet-like piezoelectric element having a porous layer, and a sound propagation sheet covering at least one face of the piezoelectric element and permitting transmission of sound from a first face toward a second face of the sound propagation sheet. A difference in acoustic pressure level between the sound incident on the sound propagation sheet and the transmitted sound is preferably no greater than 10 dB. A surface density of the sound propagation sheet is preferably from 0.03 g/m2 to 100 g/m2. The sound propagation sheet is preferably flexible and preferably has voids. The sensor unit preferably further comprises a sound insulation sheet covering another face of the piezoelectric element and substantially preventing transmission of sound from a second face toward a first face of the sound insulation sheet.Type: ApplicationFiled: February 28, 2018Publication date: July 26, 2018Inventors: Tomoya MIYATA, Kunio HIYAMA, Seiichiro IIDA, Hiroshi KOIKE, Hidekazu KODAMA
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Patent number: 9909234Abstract: A cellulose fiber can reduce environmental burden while providing an enhanced modulus of elasticity easily and reliably. A composite material contains the cellulose fiber. A method of producing the cellulose fiber includes preparing a solution where needle-shaped phases each comprising a cellulose I crystal structure are dispersed in a matrix phase comprising a cellulose II crystal structure. The cellulose fiber includes the matrix phase and the needle-shaped phases contained in the matrix phase and the needle-shaped phases are oriented along an axial direction.Type: GrantFiled: February 6, 2017Date of Patent: March 6, 2018Assignee: YAMAHA CORPORATIONInventors: Takayuki Nose, Tomoya Miyata
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Publication number: 20170145595Abstract: A cellulose fiber can reduce environmental burden while providing an enhanced modulus of elasticity easily and reliably. A composite material contains the cellulose fiber. A method of producing the cellulose fiber includes preparing a solution where needle-shaped phases each comprising a cellulose I crystal structure are dispersed in a matrix phase comprising a cellulose II crystal structure. The cellulose fiber includes the matrix phase and the needle-shaped phases contained in the matrix phase and the needle-shaped phases are oriented along an axial direction.Type: ApplicationFiled: February 6, 2017Publication date: May 25, 2017Inventors: Takayuki NOSE, Tomoya MIYATA
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Publication number: 20170076703Abstract: Provided is a cymbal washer with which the quality of cymbal sounds can be adjusted greatly without making a player perform a troublesome operation. The cymbal washer of the present invention is a washer for use in mounting a cymbal to a stand rod and is characterized by having a support portion that includes an elastic body which changes a contact area thereof with the cymbal according to the contact pressure on the cymbal. The support portion may have a protruding shape that protrudes toward the side of the surface facing the cymbal. The support portion may include notches at the periphery thereof. The support portion may have an anti-slip unit formed in a protruding shape on the surface facing the cymbal. The anti-slip unit may have a shape extending radially from the center of the support portion.Type: ApplicationFiled: May 29, 2015Publication date: March 16, 2017Inventor: Tomoya MIYATA
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Patent number: 9373311Abstract: An electronic percussion pad includes: a pad main body that is formed of a foaming elastomer; and a composite layer that includes an expandable fiber sheet laminated on a front surface of the pad main body. In the composite layer, fiber of the fiber sheet and a foaming elastomer of the pad main body are present, and the composite layer contains bubbles.Type: GrantFiled: August 14, 2014Date of Patent: June 21, 2016Assignee: Yamaha CorporationInventor: Tomoya Miyata