Patents by Inventor Motoyoshi Sakai
Motoyoshi Sakai 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: 11283425Abstract: A piezoelectric resonator unit includes a piezoelectric substrate, first and second excitation electrodes, first and second connecting electrodes, and first and second exterior members. The first excitation electrode and first connecting electrode are disposed on a first main surface of the piezoelectric substrate and are electrically connected to each other. Similarly, the second excitation electrode and the second connecting electrode are disposed on a second main surface of the piezoelectric substrate and are electrically connected to each other. First and second exterior members bonded to the substrate with sealing members interposed. The first exterior member includes a first terminal portion formed in a shape that externally exposes at least part of the first connecting electrode. A first outer electrode covers the first terminal portion and the exposed portion of the first connecting electrode protruding from the first exterior member.Type: GrantFiled: February 25, 2020Date of Patent: March 22, 2022Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Motoyoshi Sakai, Kazuyuki Noto, Jun Konishi, Isao Ikeda
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Patent number: 11251774Abstract: A quartz crystal resonator unit includes a quartz crystal substrate, first and second excitation electrodes, first and second conductive sealing members, and first and second exterior members. The first excitation electrode is disposed on a first main surface of the substrate with the first conductive sealing member surrounding the first excitation electrode. Similarly, the second excitation electrode is disposed on a second main surface of the substrate with the second conductive sealing surrounding the second excitation electrode. The first and second exterior members are bonded to the quartz crystal substrate with the first and second conductive sealing member respectively interposed therebetween and to cover the first and excitation electrodes, respectively. In a plan view of the first main surface of the substrate, at least part of the first conductive sealing member is located outward of the second conductive sealing member.Type: GrantFiled: February 24, 2020Date of Patent: February 15, 2022Assignee: MURATA MANUFACTURING CO., LTD..Inventors: Motoyoshi Sakai, Hiroaki Kaida
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Patent number: 10985727Abstract: A piezoelectric vibrator includes a piezoelectric vibrating element, and a base member having a mounting surface to which the piezoelectric vibrating element is mounted, and a mount surface positioned on the opposite side to the mounting surface. The base member includes an electrode pattern formed at the mount surface that includes a ground electrode and a signal electrode that is electrically connected to the piezoelectric vibrating element. Moreover, the mount surface is a rectangular shape, the signal and ground electrodes are arranged in a region of the mount surface closer to any one side thereof, with the one side defining part of outer edges of the mount surface, and a distance from an outer edge of the signal electrode to the one side of the mount surface is longer than a distance from an outer edge of the ground electrode to the one side of the mount surface.Type: GrantFiled: April 9, 2018Date of Patent: April 20, 2021Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Mitsunori Ishimasa, Motoyoshi Sakai, Kazuyuki Noto
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Publication number: 20200195226Abstract: A piezoelectric resonator unit includes a piezoelectric substrate, first and second excitation electrodes, first and second connecting electrodes, and first and second exterior members. The first excitation electrode and first connecting electrode are disposed on a first main surface of the piezoelectric substrate and are electrically connected to each other. Similarly, the second excitation electrode and the second connecting electrode are disposed on a second main surface of the piezoelectric substrate and are electrically connected to each other. First and second exterior members bonded to the substrate with sealing members interposed. The first exterior member includes a first terminal portion formed in a shape that externally exposes at least part of the first connecting electrode. A first outer electrode covers the first terminal portion and the exposed portion of the first connecting electrode protruding from the first exterior member.Type: ApplicationFiled: February 25, 2020Publication date: June 18, 2020Inventors: Motoyoshi Sakai, Kazuyuki Noto, Jun Konishi, Isao Ikeda
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Publication number: 20200195225Abstract: A quartz crystal resonator unit includes a quartz crystal substrate, first and second excitation electrodes, first and second conductive sealing members, and first and second exterior members. The first excitation electrode is disposed on a first main surface of the substrate with the first conductive sealing member surrounding the first excitation electrode. Similarly, the second excitation electrode is disposed on a second main surface of the substrate with the second conductive sealing surrounding the second excitation electrode. The first and second exterior members are bonded to the quartz crystal substrate with the first and second conductive sealing member respectively interposed therebetween and to cover the first and excitation electrodes, respectively. In a plan view of the first main surface of the substrate, at least part of the first conductive sealing member is located outward of the second conductive sealing member.Type: ApplicationFiled: February 24, 2020Publication date: June 18, 2020Inventors: Motoyoshi Sakai, Hiroaki Kaida
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Patent number: 10097157Abstract: A crystal vibrating device that includes a crystal resonator mounted on a substrate by a first conductive adhesive layer and a second conductive adhesive layer, and, when the first conductive adhesive layer and the second conductive adhesive layer are viewed in a plan view, the first conductive adhesive layer and the second conductive adhesive layer each have a) a planar shape in which two circles or ellipses are partly superimposed upon each other, b) two conductive adhesive layer portions that are separated from each other, or c) a length direction and an aspect ratio, which is a ratio between a maximum size in the length direction and a maximum size in a width direction that is orthogonal to the maximum size in the length direction, is in a range of 1.5 to 3.0.Type: GrantFiled: October 22, 2015Date of Patent: October 9, 2018Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Bunta Okamoto, Motoyoshi Sakai
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Publication number: 20180234077Abstract: A piezoelectric vibrator includes a piezoelectric vibrating element, and a base member having a mounting surface to which the piezoelectric vibrating element is mounted, and a mount surface positioned on the opposite side to the mounting surface. The base member includes an electrode pattern formed at the mount surface that includes a ground electrode and a signal electrode that is electrically connected to the piezoelectric vibrating element. Moreover, the mount surface is a rectangular shape, the signal and ground electrodes are arranged in a region of the mount surface closer to any one side thereof, with the one side defining part of outer edges of the mount surface, and a distance from an outer edge of the signal electrode to the one side of the mount surface is longer than a distance from an outer edge of the ground electrode to the one side of the mount surface.Type: ApplicationFiled: April 9, 2018Publication date: August 16, 2018Inventors: MITSUNORI ISHIMASA, Motoyoshi Sakai, Kazuyuki Noto
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Publication number: 20160043702Abstract: A crystal vibrating device that includes a crystal resonator mounted on a substrate by a first conductive adhesive layer and a second conductive adhesive layer, and, when the first conductive adhesive layer and the second conductive adhesive layer are viewed in a plan view, the first conductive adhesive layer and the second conductive adhesive layer each have a) a planar shape in which two circles or ellipses are partly superimposed upon each other, b) two conductive adhesive layer portions that are separated from each other, or c) a length direction and an aspect ratio, which is a ratio between a maximum size in the length direction and a maximum size in a width direction that is orthogonal to the maximum size in the length direction, is in a range of 1.5 to 3.0.Type: ApplicationFiled: October 22, 2015Publication date: February 11, 2016Inventors: BUNTA OKAMOTO, Motoyoshi Sakai
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Patent number: 7965020Abstract: A piezoelectric ceramic which has a large value of coercive electric field and, in addition, which can be fired at low temperatures of 950° C. or lower, is provided. It has a composition represented by Pbx-a-dBiaM3d{M1b(M21/3Nb2/3)yZr1-b-y-zTiz}O3 where M1 and M2 represent, independently, at least one of Ni and Zn, and M3 represents at least one of Ba and Sr, 0.05?a?0.15, 0<b?0.075, 0?(a?2b), 0?d?0.1, 0.97?x?1.00, 0.020?y?0.250, and 0.398?z?0.512. It is preferable that M1 represents Ni, and M2 represents at least one of Ni and Zn. Moreover, it is preferable that Ni is in the state of being segregated.Type: GrantFiled: April 20, 2009Date of Patent: June 21, 2011Assignee: Murata Manufacturing Co., Ltd.Inventors: Chiharu Sakaki, Emi Shimomura, Motoyoshi Sakai, Motonori Nakamura
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Publication number: 20090200898Abstract: A piezoelectric ceramic which has a large value of coercive electric field and, in addition, which can be fired at low temperatures of 950° C. or lower, is provided. It has a composition represented by Pbx-a-dBiaM3d{M1b(M21/3Nb2/3)yZr1-b-y-zTiz}O3 where M1 and M2 represent, independently, at least one of Ni and Zn, and M3 represents at least one of Ba and Sr, 0.05?a?0.15, 0<b?0.075, 0?(a?2b), 0?d?0.1, 0.97?x?1.00, 0.020?y?0.250, and 0.398?z?0.512. It is preferable that M1 represents Ni, and M2 represents at least one of Ni and Zn. Moreover, it is preferable that Ni is in the state of being segregated.Type: ApplicationFiled: April 20, 2009Publication date: August 13, 2009Inventors: Chiharu Sakaki, Emi Shimomura, Motoyoshi Sakai, Motonori Nakamura