Patents by Inventor Yasuhito Hagiwara
Yasuhito Hagiwara 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: 11754528Abstract: A gas detection device according to an embodiment of the present invention includes a casing and a plurality of sensor elements. The casing includes a gas introducing port, a first chamber that communicates with the introducing port, a second chamber that communicates with the first chamber, a flow limiter that limits a flow of gas from the first chamber to the second chamber, and a gas exhausting portion that communicates with the second chamber. The plurality of sensor elements are disposed within the second chamber and have different detection sensitivities depending on a gas type.Type: GrantFiled: August 22, 2022Date of Patent: September 12, 2023Assignee: TAIYO YUDEN CO., LTD.Inventor: Yasuhito Hagiwara
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Publication number: 20220397555Abstract: A gas detection device according to an embodiment of the present invention includes a casing and a plurality of sensor elements. The casing includes a gas introducing port, a first chamber that communicates with the introducing port, a second chamber that communicates with the first chamber, a flow limiter that limits a flow of gas from the first chamber to the second chamber, and a gas exhausting portion that communicates with the second chamber. The plurality of sensor elements are disposed within the second chamber and have different detection sensitivities depending on a gas type.Type: ApplicationFiled: August 22, 2022Publication date: December 15, 2022Applicant: TAIYO YUDEN CO., LTD.Inventor: Yasuhito HAGIWARA
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Publication number: 20200105723Abstract: A module includes: a resin insulating layer; a first electronic component mounted on a lower surface of the resin insulating layer and including first and second terminals on an upper surface of the first electronic component; a resin bonding layer bonding the lower surface of the resin insulating layer to the upper surface of the first electronic component; first and second wiring lines located on inner surfaces of at least one first through hole and at least one second through hole penetrating through the resin insulating layer and the resin bonding layer, respectively, located on an upper surface of the resin insulating layer, and connecting to the first and second terminals, respectively, wherein an opening penetrating through the resin insulating layer and the resin bonding layer is provided between the first and second terminals and between the first and second wiring lines, and no other metal layers are provided.Type: ApplicationFiled: September 26, 2019Publication date: April 2, 2020Inventors: Yasuhito HAGIWARA, Shigeru YOKOYAMA, Michiharu KAWANO, Takaki HAMAMOTO
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Patent number: 10520376Abstract: In one aspect, a load cell includes an elastic body, first optical unit, second optical unit, detector, and computation unit. The first optical unit has a light source, a first diffraction grating on which light from the light source is incident, and a light-receiving unit. The first optical unit is fixed to a first end portion of the elastic body and arranged within a hollow portion of the elastic body. The second optical unit has a second diffraction grating on which diffracted light from the first diffraction grating is incident to generate interference light. The second optical unit is fixed to a second end portion of the elastic body and arranged within the hollow portion. The detector detects the interference light. The computation unit computes a relative displacement amount of the second diffraction grating relative to the first diffraction grating on the basis of a signal obtained by the detector.Type: GrantFiled: October 18, 2017Date of Patent: December 31, 2019Assignee: TAIYO YUDEN CO., LTD.Inventors: Fuyuki Miyazawa, Katsuhiro Oyama, Isao Matsuda, Yasuhito Hagiwara, Takaki Hamamoto
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Patent number: 10012519Abstract: A displacement measurement device includes: a light source; a first diffraction grating and a second diffraction grating arranged along a path of light from the light source and movable relative to one another, the first and second diffraction gratings generating diffracted light; an optical sensor that detects interference light produced by interference between ?nth order diffracted light generated as a result of the second diffraction grating diffracting +nth order diffracted light from the first diffraction grating and +nth order diffracted light generated as a result of the second diffraction grating diffracting ?nth order diffracted light from the first diffraction grating, where n is a natural number greater than or equal to 1; and a calculation unit calculating, according to a signal from the optical sensor, a relative displacement between the first and second diffraction gratings in a direction orthogonal to an optical axis of the first and second diffraction gratings.Type: GrantFiled: January 6, 2016Date of Patent: July 3, 2018Assignee: TAIYO YUDEN CO., LTD.Inventors: Fuyuki Miyazawa, Yasuhito Hagiwara, Takaki Hamamoto, Katsuhiro Oyama
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Publication number: 20180106690Abstract: In one aspect, a load cell includes an elastic body, first optical unit, second optical unit, detector, and computation unit. The first optical unit has a light source, a first diffraction grating on which light from the light source is incident, and a light-receiving unit. The first optical unit is fixed to a first end portion of the elastic body and arranged within a hollow portion of the elastic body. The second optical unit has a second diffraction grating on which diffracted light from the first diffraction grating is incident to generate interference light. The second optical unit is fixed to a second end portion of the elastic body and arranged within the hollow portion. The detector detects the interference light. The computation unit computes a relative displacement amount of the second diffraction grating relative to the first diffraction grating on the basis of a signal obtained by the detector.Type: ApplicationFiled: October 18, 2017Publication date: April 19, 2018Applicant: TAIYO YUDEN CO., LTD.Inventors: Fuyuki MIYAZAWA, Katsuhiro OYAMA, Isao MATSUDA, Yasuhito HAGIWARA, Takaki HAMAMOTO
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Publication number: 20180066966Abstract: A displacement measuring device according to the present invention includes a diffraction grating that receives light from a light source, the first diffraction grating including a plurality of grating pattern regions respectively having prescribed diffraction grating patterns, grating pitches of the plurality of grating pattern regions being equal to one another, the plurality of grating pattern regions being arranged in a direction that is orthogonal to a direction in which the prescribed diffraction grating patterns extend; a second diffraction grating that produces interference light upon receiving diffracted light rays emitted from the first diffraction grating; and a light detector that receives the interference light emitted from the second diffraction grating, the light detector including a plurality of photodetectors, the plurality of photodetectors being arranged along a first direction that is orthogonal to a direction in which interference fringes created by the interference light extend.Type: ApplicationFiled: August 31, 2017Publication date: March 8, 2018Applicant: TAIYO YUDEN CO., LTD.Inventors: Katsuhiro Oyama, Fuyuki Miyazawa, Yasuhito Hagiwara, Takaki Hamamoto, Isao Matsuda
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Patent number: 9719809Abstract: An optical unit includes: a first diffraction grating where light from a light source enters; a second diffraction grating that generates interference light as a result of diffracted light rays emitted from the first diffraction grating entering the second diffraction grating; and an optical member including a pair of reflective surfaces that are parallel and opposite to each other, the optical member being configured such that the pair of reflective surfaces respectively reflect ±mth-order diffracted light rays that are diffracted light rays of a specific order among a plurality of orders of the diffracted light rays emitted from the first diffraction grating so as to guide the ±mth-order diffracted light rays to the second diffraction grating, where m is a natural number.Type: GrantFiled: January 21, 2016Date of Patent: August 1, 2017Assignee: TAIYO YUDEN CO., LTD.Inventors: Katsuhiro Oyama, Fuyuki Miyazawa, Yasuhito Hagiwara, Takaki Hamamoto, Isao Matsuda
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Publication number: 20160216101Abstract: An optical unit includes: a first diffraction grating where light from a light source enters; a second diffraction grating that generates interference light as a result of diffracted light rays emitted from the first diffraction grating entering the second diffraction grating; and an optical member including a pair of reflective surfaces that are parallel and opposite to each other, the optical member being configured such that the pair of reflective surfaces respectively reflect ±mth-order diffracted light rays that are diffracted light rays of a specific order among a plurality of orders of the diffracted light rays emitted from the first diffraction grating so as to guide the ±mth-order diffracted light rays to the second diffraction grating, where m is a natural number.Type: ApplicationFiled: January 21, 2016Publication date: July 28, 2016Applicant: TAIYO YUDEN CO., LTD.Inventors: Katsuhiro OYAMA, Fuyuki MIYAZAWA, Yasuhito HAGIWARA, Takaki HAMAMOTO, Isao MATSUDA
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Publication number: 20160116305Abstract: A displacement measurement device includes: a light source; a first diffraction grating and a second diffraction grating arranged along a path of light from the light source and movable relative to one another, the first and second diffraction gratings generating diffracted light; an optical sensor that detects interference light produced by interference between ?nth order diffracted light generated as a result of the second diffraction grating diffracting +nth order diffracted light from the first diffraction grating and +nth order diffracted light generated as a result of the second diffraction grating diffracting ?nth order diffracted light from the first diffraction grating, where n is a natural number greater than or equal to 1; and a calculation unit calculating, according to a signal from the optical sensor, a relative displacement between the first and second diffraction gratings in a direction orthogonal to an optical axis of the first and second diffraction gratings.Type: ApplicationFiled: January 6, 2016Publication date: April 28, 2016Applicant: TAIYO YUDEN CO., LTD.Inventors: Fuyuki MIYAZAWA, Yasuhito HAGIWARA, Takaki HAMAMOTO, Katsuhiro OYAMA
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Publication number: 20080248254Abstract: An optical information recording medium of which the commercial value is not reduced is provided, in which a light reflection layer, an optical recording layer, a first light transmission layer, and a second light transmission layer are provided in this order on one main surface of a disk-shaped substrate, and a method of manufacturing the optical information recording medium is provided. A light reflection layer, an optical recording layer, a protection layer, a first light transmission layer, and a second light transmission layer may be provided in this order on the one main surface of the disk-shaped substrate. The substrate has a first groove and a second groove approximately concentrically formed nearer an inner circumference of the substrate than an area in which the optical recording layer is to be provided. The first light transmission layer is provided such that an edge thereof is situated near an edge of an outer circumferential side of the first groove.Type: ApplicationFiled: February 22, 2008Publication date: October 9, 2008Applicant: Taiyo Yuden Co., Ltd.Inventors: Yasuhito Hagiwara, Motomitsu Hagiwara, Takeshi Otsu, Akimasa Miyata, Kuniyuki Aihara