Patents by Inventor Yoshihisa Inoue
Yoshihisa Inoue 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: 20240243540Abstract: Dependence of EDFA gain shape on input power and input spectrum shape is modelled using a simple neural network-based architecture for amplifiers with different gains and output powers. The model can predict the gain within ±0.1 dB. While the model has good success predicting the performance of an EDFA it is trained with, it is not as successful when predicting a different EDFA, or the same EDFA with different pump power. Retraining the model with a small amount of supplementary data from a separate EDFA makes the model able to predict the performance of the second EDFA with little loss in performance. Experiments show that machine learning model of an EDFA is capable of modelling spectralhole burning effects accurately. As a result, it significantly outperforms black-box models that neglect inhomogenous effects. Model achieves an average RMSE error of 0.016 dB between the model and measurements.Type: ApplicationFiled: January 16, 2024Publication date: July 18, 2024Applicant: NEC Laboratories America, Inc.Inventors: Fatih YAMAN, Hussam BATSHON, Eduardo Fabian MATEO RODRIGUEZ, Yoshihisa INADA, Shinsuke FUJISAWA, Takanori INOUE
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Patent number: 12021501Abstract: A resonator includes a base, at least one vibration arm, a frame, and a holding arm. The vibration arm includes a piezoelectric film, an upper electrode, and a lower electrode. The inequality Fs/Fm<1.9 or the inequality 2.1<Fs/Fm holds, where Fm is a frequency of a main or primary mode in the vibration arm, and Fs is a frequency of a spurious mode in the holding arm.Type: GrantFiled: March 2, 2021Date of Patent: June 25, 2024Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Ryota Kawai, Yuichi Goto, Yoshihisa Inoue
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Patent number: 11990890Abstract: A resonator includes a base; and at least three vibrating arms having first ends connected to a front end of the base and second ends that are open ends spaced away from the front end. Each vibrating arm includes an arm portion having a part that extends from the fixed end in a direction toward the open end with a constant width and a mass-adding portion that is connected to a tip of the arm portion and has a larger width than the arm portion. An interval between the mass-adding portions is larger than an interval between the arm portions for any two vibrating arms that are adjacent to each other.Type: GrantFiled: February 22, 2021Date of Patent: May 21, 2024Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Yoshihisa Inoue, Ryota Kawai, Yuichi Goto
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Patent number: 11912858Abstract: A molded bale of a rubber-like block copolymer, the rubber-like block copolymer containing 5% by mass or more and 95% by mass or less of a polymer block (a) having a content of a vinyl aromatic monomer unit of 22% by mass or less; and 5% by mass or more and 95% by mass or less of a polymer block (b) having a content of a vinyl aromatic monomer unit of 23% by mass or more and less than 50% by mass, in which the rubber-like block copolymer has an iodine value of 10 to 250, an ethylene structure content of 3% by mass or more, and a vinyl aromatic monomer block content of less than 10% by mass.Type: GrantFiled: July 2, 2021Date of Patent: February 27, 2024Assignee: Asahi Kasei Kabushiki KaishaInventors: Yoshifumi Araki, Atsushi Yasumoto, Daigo Matsuoka, Yoshihisa Inoue, Tomohiro Kondo
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Patent number: 11909375Abstract: A resonance device is provided for reducing the influence on the resonant frequency of the resonance device of the electric charge borne by an insulating film of a frame. The resonance device includes a resonator including a vibration portion and a frame disposed in at least a part of a vicinity of the vibration portion. The frame includes a holding body and an insulating film, with the holding body holding the vibration portion to vibrate and the insulating film being formed above the holding body. A lower cover is provided having a recess forming at least a part of a space in which the vibration portion vibrates. An inner side surface of the insulating film is disposed at a first distance from an inner surface of a side wall defining the recess.Type: GrantFiled: March 9, 2021Date of Patent: February 20, 2024Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Keiichi Umeda, Naoto Yatani, Ryota Kawai, Yoshihisa Inoue
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Patent number: 11909379Abstract: A MEMS device that includes a substrate including an element and a connection wiring electrically connected to the element, and a connection portion electrically connected to the connection wiring. The connection portion is formed of a eutectic alloy of a first metal and a second metal. A line width of the connection wiring is smaller than a width of the connection portion when a main surface of the substrate is viewed in a plan view.Type: GrantFiled: December 1, 2020Date of Patent: February 20, 2024Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Yoshihisa Inoue, Masakazu Fukumitsu, Yuichi Goto
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Publication number: 20230365789Abstract: The present invention provides a rubber composition, containing 10 parts by mass or more and 90 parts by mass or less of a rubber-like polymer having an iodine value of 10 to 200 (g/100 g), a content of an ethylene structure of 3% by mass or more, a content of an aromatic vinyl monomer block of less than 10% by mass, and a content of a conjugated diene monomer unit of 2% by mass or more; 10 parts by mass or more and 90 parts by mass or less of a natural rubber; and 20 parts by mass or more and 80 parts by mass or less of a silica-based inorganic filler and a carbon black, with respect to 100 parts by mass of a total amount of a rubber component.Type: ApplicationFiled: October 22, 2021Publication date: November 16, 2023Applicant: Asahi Kasei Kabushiki KaishaInventor: Yoshihisa Inoue
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Patent number: 11804820Abstract: A resonator is provided that includes a vibration member including three or more vibration arms that each have a fixed end with at least two vibration arms performing out-of-plane bending at different phases. The resonator also includes a base having a front end connected to the fixed end of each of the vibration arms and a rear end opposing the front end. A frame holds the vibration member and two support arms are provided with first ends connected to the frame. The second ends of the two support arms are connected to a location in the rear end of the base.Type: GrantFiled: September 15, 2022Date of Patent: October 31, 2023Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Ryota Kawai, Yoshihisa Inoue, Yoshiyuki Higuchi
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Patent number: 11629046Abstract: A MEMS device is provided that includes a piezoelectric film, a first electrode and a second electrode sandwiching the piezoelectric film, a protective film that covers at least part of the second electrode and having a cavity that opens part of the second electrode, a third electrode that contacts the second electrode at least in the cavity and is provided so as to cover at least part of the protective film, and a first wiring layer having a first contact portion in contact with the third electrode.Type: GrantFiled: May 28, 2020Date of Patent: April 18, 2023Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Keiichi Umeda, Tadayuki Okawa, Taku Kamoto, Yuichi Goto, Yoshihisa Inoue, Takehiko Kishi
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Publication number: 20230018209Abstract: A vibration member is provided that includes a base with front and rear ends opposite to each other, and vibration arms fixed to the front end, extending away therefrom, and including at least one first vibration arm and a pair of second vibration arms positioned on both sides of a first vibration arm group including the at least one first vibration arm in a direction intersecting a longitudinal direction. A holding arm is provided that has one end connected to the base and the other end connected to a frame. A plurality of vibration portions include a piezoelectric film, and a lower electrode and an upper electrode that sandwich the piezoelectric film. A connection wiring line that connects the respective upper electrodes of the pair of second vibration arms to each other is provided in a region of at least either of the base or the holding arm.Type: ApplicationFiled: September 14, 2022Publication date: January 19, 2023Inventors: Yoshiyuki HIGUCHI, Ryota KAWAI, Yoshihisa INOUE, Masakazu FUKUMITSU
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Publication number: 20230015447Abstract: A resonator is provided that includes a vibration member including three or more vibration arms that each have a fixed end with at least two vibration arms performing out-of-plane bending at different phases. The resonator also includes a base having a front end connected to the fixed end of each of the vibration arms and a rear end opposing the front end. A frame holds the vibration member and two support arms are provided with first ends connected to the frame. The second ends of the two support arms are connected to a location in the rear end of the base.Type: ApplicationFiled: September 15, 2022Publication date: January 19, 2023Inventors: Ryota KAWAI, Yoshihisa INOUE, Yoshiyuki HIGUCHI
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Patent number: 11405016Abstract: A resonator includes a vibration portion with a vibration arm extending from a base and having an open end that performs bending vibration. The vibration portion includes upper and lower electrodes with a piezoelectric film disposed therebetween that causes bending vibration of the vibration arm when a voltage is applied between the upper and lower electrodes. A protective film faces the piezoelectric film with the upper electrode interposed therebetween and a conductive film faces the piezoelectric film with the protective film interposed therebetween. Moreover, the conductive film is exposed in a region at the open end and a via electrode is formed in the protective film to electrically connect the conductive film to one of the upper and lower electrodes. The via electrode is positioned closer to a first region than the open end in the second region of the vibration arm in a plan view of the piezoelectric film.Type: GrantFiled: March 10, 2020Date of Patent: August 2, 2022Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Yoshihisa Inoue, Ryota Kawai
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Patent number: 11368141Abstract: A resonator is provided that includes a base, and three or more vibrating arms each including a first and second electrodes and a piezoelectric film disposed therebetween and having a top surface facing the first electrode. The piezoelectric film vibrates in a predetermined vibration mode when a voltage is applied between the first and second electrodes. Moreover, the three or more vibrating arms include two first arms each located on an outermost side in a direction in which the three or more vibrating arms are arranged and that vibrate in a same phase, and one or more second arms disposed between the two first arms. Each first arm is greater in mass than each second arm.Type: GrantFiled: December 31, 2019Date of Patent: June 21, 2022Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Yoshihisa Inoue, Ryota Kawai
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Publication number: 20220029598Abstract: A resonance device is provided that includes a resonator having a base, a vibrating arm extending from one end of the base along a first direction, a frame disposed around at least a part of the vibrating arm and holding the vibrating arm such that the vibrating arm is configured to vibrate, and a support arm connecting the base to the frame. Moreover, a first substrate is provided that includes a first recess forming at least a part of a vibration space for the resonator and a first limiting portion provided away from the support arm by a first distance in a thickness direction, in which the first distance is smaller than a distance between a bottom surface of the first recess and the vibrating arm in the thickness direction of the first substrate.Type: ApplicationFiled: October 4, 2021Publication date: January 27, 2022Inventors: Yoshihisa Inoue, Ville Kaajakari, Ryota Kawai
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Publication number: 20220002535Abstract: A molded bale of a rubber-like block copolymer, the rubber-like block copolymer containing 5% by mass or more and 95% by mass or less of a polymer block (a) having a content of a vinyl aromatic monomer unit of 22% by mass or less; and 5% by mass or more and 95% by mass or less of a polymer block (b) having a content of a vinyl aromatic monomer unit of 23% by mass or more and less than 50% by mass, in which the rubber-like block copolymer has an iodine value of 10 to 250, an ethylene structure content of 3% by mass or more, and a vinyl aromatic monomer block content of less than 10% by mass.Type: ApplicationFiled: July 2, 2021Publication date: January 6, 2022Applicant: Asahi Kasei Kabushiki KaishaInventors: Yoshifumi Araki, Atsushi Yasumoto, Daigo Matsuoka, Yoshihisa Inoue, Tomohiro Kondo
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Patent number: 11196407Abstract: A resonator is provided that includes a vibrating portion including a three or more vibrating arms each having a fixed end and a free end, with at least two of the vibrating arms configured to bend out of plane in different phases, and a base having a front end connected to the fixed end of each vibrating arm and a rear end opposite from the front end. Moreover, a frame is disposed at least partially around the vibrating portion, a holding arm is provided between the vibrating portion and the holding portion and includes a first end connected to the base and a second end connected to the frame, and a plurality of holes disposed in the vibrating portion. Moreover, the plurality of holes are each formed in a region between any one pair of adjacent two of the plurality of vibrating arms in the base portion.Type: GrantFiled: November 21, 2019Date of Patent: December 7, 2021Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Ryota Kawai, Yoshihisa Inoue, Ville Kaajakari
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Publication number: 20210203304Abstract: A resonator includes a base; and at least three vibrating arms having first ends connected to a front end of the base and second ends that are open ends spaced away from the front end. Each vibrating arm includes an arm portion having a part that extends from the fixed end in a direction toward the open end with a constant width and a mass-adding portion that is connected to a tip of the arm portion and has a larger width than the arm portion. An interval between the mass-adding portions is larger than an interval between the arm portions for any two vibrating arms that are adjacent to each other.Type: ApplicationFiled: February 22, 2021Publication date: July 1, 2021Inventors: Yoshihisa Inoue, Ryota Kawai, Yuichi Goto
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Publication number: 20210194454Abstract: A resonance device is provided for reducing the influence on the resonant frequency of the resonance device of the electric charge borne by an insulating film of a frame. The resonance device includes a resonator including a vibration portion and a frame disposed in at least a part of a vicinity of the vibration portion. The frame includes a holding body and an insulating film, with the holding body holding the vibration portion to vibrate and the insulating film being formed above the holding body. A lower cover is provided having a recess forming at least a part of a space in which the vibration portion vibrates. An inner side surface of the insulating film is disposed at a first distance from an inner surface of a side wall defining the recess.Type: ApplicationFiled: March 9, 2021Publication date: June 24, 2021Inventors: Keiichi Umeda, Naoto Yatani, Ryota Kawai, Yoshihisa Inoue
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Publication number: 20210184651Abstract: A resonator includes a base, at least one vibration arm, a frame, and a holding arm. The vibration arm includes a piezoelectric film, an upper electrode, and a lower electrode. The inequality Fs/Fm<1.9 or the inequality 2.1<Fs/Fm holds, where Fm is a frequency of a main or primary mode in the vibration arm, and Fs is a frequency of a spurious mode in the holding arm.Type: ApplicationFiled: March 2, 2021Publication date: June 17, 2021Inventors: Ryota Kawai, Yuichi Goto, Yoshihisa Inoue
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Publication number: 20210167754Abstract: A resonator is provided that includes a base; at least three vibrating arms that include a piezoelectric film, an upper electrode, and a lower electrode; a frame; and a holding arm. Each vibrating arm includes an arm portion and a tip portion. The holding arm includes a holding side arm that extends parallel to the outer vibrating arm. A release width between the tip portion of the outer vibrating arm and the frame is larger than a release width between the holding side arm and the frame or a release width between the arm portion of the outer vibrating arm and the holding side arm.Type: ApplicationFiled: February 8, 2021Publication date: June 3, 2021Inventors: Yoshihisa Inoue, Ryota Kawai, Yuichi Goto