Patents by Inventor Yuta Takagi
Yuta Takagi 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: 20200273683Abstract: A plasma processing method includes an etching step of etching a wafer in a chamber, a plasma cleaning step of removing a particle on an inner wall of the chamber by introducing a gas containing a halogen element into the chamber by a plasma processing method for removing remaining halogen or the like in the chamber in a short time and improving throughput, and a remaining halogen removing step of removing the halogen element remaining in the chamber in the plasma cleaning step by alternately repeating an on state and an off state of the plasma containing oxygen in the chamber.Type: ApplicationFiled: February 27, 2019Publication date: August 27, 2020Inventors: Yuta TAKAGI, Kosa HIROTA, Yoshiharu INOUE, Masakazu MIYAJI
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Patent number: 10638581Abstract: A light-emitting/receiving device including: a diode-type light-emitting element formed on a semiconductor substrate; a diode-type light-receiving element formed on the semiconductor substrate; a light source driving unit configured to supply a first common voltage to an anode or a cathode of the light-emitting element to drive the light-emitting element; and a light signal processing unit configured to perform current/voltage conversion on an output current outputted from the light-receiving element, by referring to a second common voltage.Type: GrantFiled: December 20, 2018Date of Patent: April 28, 2020Assignee: Asahi Kasei Microdevices CorporationInventors: Yuta Takagi, Yuji Goda
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Publication number: 20190124738Abstract: A light-emitting/receiving device including: a diode-type light-emitting element formed on a semiconductor substrate; a diode-type light-receiving element formed on the semiconductor substrate; a light source driving unit configured to supply a first common voltage to an anode or a cathode of the light-emitting element to drive the light-emitting element; and a light signal processing unit configured to perform current/voltage conversion on an output current outputted from the light-receiving element, by referring to a second common voltage.Type: ApplicationFiled: December 20, 2018Publication date: April 25, 2019Applicant: ASAHI KASEI MICRODEVICES CORPORATIONInventors: Yuta TAKAGI, Yuji GODA
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Patent number: 9950459Abstract: To provide a vehicle resin part and a vehicle resin part manufacturing method with which raised portions can be formed using slanted slide molds even on opposing molded portions that have a narrow distance between them. In a rail cover, shelf-shaped portions that can be molded using a cavity and a core are formed on opposing side wall portions, and claw portions that can be molded using slanted slide molds are formed projecting from the shelf-shaped portions in the directions of the opposing side wall portions. Additionally, the claw portions are molded by moving, during demolding, the pair of slanted slide molds in the directions of the opposing side wall portions from a molding position and thereafter removing the pair of slanted slide molds in a forward direction.Type: GrantFiled: May 14, 2015Date of Patent: April 24, 2018Assignee: NHK Spring Co., Ltd.Inventors: Jun Shirai, Taisuke Matsuzaki, Yuta Takagi
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Patent number: 9638576Abstract: An infrared-sensor filter member includes an optical filter disposed in an opening portion of a second member and a first member. The infrared-sensor filter member includes a recess portion formed from a light-incident surface of the optical filter and the first member. At least a part of a bottom surface of the recess portion is formed by the light-incident surface and side walls of the recess portion, which are formed by the first member.Type: GrantFiled: February 6, 2014Date of Patent: May 2, 2017Assignee: Asahi Kasei Microdevices CorporationInventors: Toshiaki Fukunaka, Edson Gomes Camargo, Sosuke Nishida, Yuta Takagi
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Patent number: 9555748Abstract: A vehicle-use resin cover including: a resin cover main body configured including an opening, and anchoring portions formed at locations running along a peripheral edge of the opening; a resin cap member, which is mounted in the opening and is configured including a cap main body that covers the opening, and anchored portions, which are provided to an outer peripheral portion of the cap main body so as to correspond to the anchoring portions and are anchored by the anchoring portions; a recessed portion, which is formed at the peripheral edge of the opening and is in communication with the opening at the cap member side of the recessed portion, and through which a leading end of a tool for removing the cap member is insertable; and a marker portion provided to the outer peripheral portion of the cap main body at a position facing the recessed portion.Type: GrantFiled: June 9, 2015Date of Patent: January 31, 2017Assignee: NHK SPRING CO., LTD.Inventors: Jun Shirai, Taisuke Matsuzaki, Yuta Takagi
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Patent number: 9356644Abstract: A wireless circuit that can be used in a plurality of frequency bands even if its duplexer is formed of current variable frequency filters is provided. The circuit includes a transmission-reception antenna 911, a variable frequency duplexer 131, a double-pole six-throw switch 923, an RFIC 180, and a controller 190 which executes switching operations in accordance with control signals. The RFIC 180 determines a pair of frequency bands for transmission and reception signals input to the variable frequency duplexer 131 and generates and sends the control signals to perform switching control operations to connect a transmission port corresponding to the determined transmission frequency band with the transmission terminal of the variable frequency duplexer 131 and to connect a reception port corresponding to the determined reception frequency band with the reception terminal of the variable frequency duplexer 131 and to perform a frequency switching operation of the variable frequency duplexer 131.Type: GrantFiled: July 10, 2013Date of Patent: May 31, 2016Assignee: NTT DOCOMO, INC.Inventors: Hiroshi Okazaki, Kunihiro Kawai, Shoichi Narahashi, Yuta Takagi, Takayuki Furuta
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Patent number: 9337990Abstract: A front-end circuit includes an RFIC, an antenna, N duplexers, N variable impedance adjustment circuits, a switch for selecting any two of the N variable impedance adjustment circuits, and a control unit which receives a control signal from the RFIC, where 2?N. The control unit executes switching operations of the N variable impedance adjustment circuits and the switch in accordance with control information. The control signal indicates to 1) control the switch to select two variable impedance adjustment circuits corresponding to a p-th frequency band and a q-th frequency band respectively, 2) control a variable impedance adjustment circuit corresponding to the p-th frequency band to increase input impedance in the q-th frequency band as viewed from the antenna side and 3) control a variable impedance adjustment circuit corresponding to the q-th frequency band to increase input impedance in the p-th frequency band as viewed from the side.Type: GrantFiled: July 9, 2013Date of Patent: May 10, 2016Assignee: NTT DOCOMO, INC.Inventors: Shoichi Narahashi, Hiroshi Okazaki, Kunihiro Kawai, Yuta Takagi, Takayuki Furuta
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Publication number: 20150360622Abstract: A vehicle-use resin cover including: a resin cover main body configured including an opening, and anchoring portions formed at locations running along a peripheral edge of the opening; a resin cap member, which is mounted in the opening and is configured including a cap main body that covers the opening, and anchored portions, which are provided to an outer peripheral portion of the cap main body so as to correspond to the anchoring portions and are anchored by the anchoring portions; a recessed portion, which is formed at the peripheral edge of the opening and is in communication with the opening at the cap member side of the recessed portion, and through which a leading end of a tool for removing the cap member is insertable; and a marker portion provided to the outer peripheral portion of the cap main body at a position facing the recessed portion.Type: ApplicationFiled: June 9, 2015Publication date: December 17, 2015Inventors: Jun Shirai, Taisuke Matsuzaki, Yuta Takagi
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Publication number: 20150362365Abstract: An infrared-sensor filter member includes an optical filter disposed in an opening portion of a second member and a first member. The infrared-sensor filter member includes a recess portion formed from a light-incident surface of the optical filter and the first member. At least a part of a bottom surface of the recess portion is formed by the light-incident surface and side walls of the recess portion, which are formed by the first member.Type: ApplicationFiled: February 6, 2014Publication date: December 17, 2015Applicant: ASAHI KASEI MICRODEVICES CORPORATIONInventors: Toshiaki FUKUNAKA, Edson Gomes CAMARGO, Sosuke NISHIDA, Yuta TAKAGI
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Publication number: 20150329082Abstract: To provide a vehicle resin part and a vehicle resin part manufacturing method with which raised portions can be formed using slanted slide molds even on opposing molded portions that have a narrow distance between them. In a rail cover, shelf-shaped portions that can be molded using a cavity and a core are formed on opposing side wall portions, and claw portions that can be molded using slanted slide molds are formed projecting from the shelf-shaped portions in the directions of the opposing side wall portions. Additionally, the claw portions are molded by moving, during demolding, the pair of slanted slide molds in the directions of the opposing side wall portions from a molding position and thereafter removing the pair of slanted slide molds in a forward direction.Type: ApplicationFiled: May 14, 2015Publication date: November 19, 2015Inventors: Jun Shirai, Taisuke Matsuzaki, Yuta Takagi
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Publication number: 20140349592Abstract: A wireless circuit that can be used in a plurality of frequency bands even if its duplexer is formed of current variable frequency filters is provided. The circuit includes a transmission-reception antenna 911, a variable frequency duplexer 131, a double-pole six-throw switch 923, an RFIC 180, and a controller 190 which executes switching operations in accordance with control signals. The RFIC 180 determines a pair of frequency bands for transmission and reception signals input to the variable frequency duplexer 131 and generates and sends the control signals to perform switching control operations to connect a transmission port corresponding to the determined transmission frequency band with the transmission terminal of the variable frequency duplexer 131 and to connect a reception port corresponding to the determined reception frequency band with the reception terminal of the variable frequency duplexer 131 and to perform a frequency switching operation of the variable frequency duplexer 131.Type: ApplicationFiled: July 10, 2013Publication date: November 27, 2014Applicant: NTT DOCOMO, INC.Inventors: Hiroshi Okazaki, Kunihiro Kawai, Shoichi Narahashi, Yuta Takagi, Takayuki Furuta
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Publication number: 20140321312Abstract: Provided is a front-end circuit which can prevent a signal from leaking into another circuit even when signals are sent and received simultaneously in multiple frequency bands in carrier aggregation.Type: ApplicationFiled: July 9, 2013Publication date: October 30, 2014Applicant: NTT DOCOMO, INC.Inventors: Shoichi Narahashi, Hiroshi Okazaki, Kunihiro Kawai, Yuta Takagi, Takayuki Furuta
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Patent number: 8847706Abstract: An multiband resonator of the present invention includes a dielectric substrate including three or more dielectric layers, a ground conductor, a main-line conductor, a sub-line conductor, a sub open stub, a main open stub, a short-circuit conductor, a main through conductor, and a sub through conductor. The short-circuit conductor electrically connects one end of the main-line conductor to one end of the sub-line conductor and to the ground conductor. The main through conductor electrically connects the other end of the main-line conductor to one end of the main open stub that is aligned with that other end of the main-line conductor. The sub through conductor electrically connects the other end of the sub-line conductor to one end of the sub open stub that is aligned with that other end of the sub-line conductor.Type: GrantFiled: June 22, 2011Date of Patent: September 30, 2014Assignee: NTT DoCoMo, Inc.Inventors: Kei Satoh, Shoichi Narahashi, Yuta Takagi
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Publication number: 20110316652Abstract: An multiband resonator of the present invention includes a dielectric substrate including three or more dielectric layers, a ground conductor, a main-line conductor, a sub-line conductor, a sub open stub, a main open stub, a short-circuit conductor, a main through conductor, and a sub through conductor. The short-circuit conductor electrically connects one end of the main-line conductor to one end of the sub-line conductor and to the ground conductor. The main through conductor electrically connects the other end of the main-line conductor to one end of the main open stub that is aligned with that other end of the main-line conductor. The sub through conductor electrically connects the other end of the sub-line conductor to one end of the sub open stub that is aligned with that other end of the sub-line conductor.Type: ApplicationFiled: June 22, 2011Publication date: December 29, 2011Applicant: NTT DOCOMO, INC.Inventors: Kei SATOH, Shoichi Narahashi, Yuta Takagi