Patents by Inventor Hideyuki Kotsuji
Hideyuki Kotsuji 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: 20240062986Abstract: The purpose of the present invention is to provide a charged particle beam device that can specify irradiation conditions for primary charged particles that can obtain a desired charged state without adjusting the acceleration voltage. The charged particle beam device according to the present invention specifies the irradiation conditions for a charged particle beam in which the charged state of a sample is switched between a positive charge and a negative charge, and adjusts the irradiation conditions according to the relationship between the specified irradiation conditions and the irradiation conditions when an observation image of the sample has been acquired (see FIG. 8).Type: ApplicationFiled: March 1, 2021Publication date: February 22, 2024Inventors: Naho TERAO, Toshiyuki YOKOSUKA, Hideyuki KOTSUJI, Tomohito NAKANO, Hajime KAWANO
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Publication number: 20230420215Abstract: A charged particle beam device for irradiating a sample arranged in a sample chamber to be observed with an electron beam includes: a plasma generation device to which a bias voltage is applicable to generate plasma containing charged particles for applying charges onto a side wall of a pattern of the sample; and a guide that guides the charged particles in the plasma generated by the plasma generation device to the pattern of the sample.Type: ApplicationFiled: June 5, 2023Publication date: December 28, 2023Applicant: Hitachi High-Tech CorporationInventors: Toshiyuki YOKOSUKA, Hideyuki KOTSUJI, Hajime KAWANO
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Publication number: 20230411108Abstract: A charged particle beam device includes: a plasma generation device attached to a sample chamber through a connecting member; a guide including a hollow portion configured to guide a plasma generated by the plasma generation device in a direction toward a stage; a first voltage source configured to apply a voltage to the stage; and a second voltage source configured to adjust the plasma generation device and the guide to a predetermined potential, in which the guide is disposed to avoid an opening of an objective lens through which a charged particle beam passes and to position a tip of the guide between the objective lens and the stage.Type: ApplicationFiled: May 18, 2023Publication date: December 21, 2023Applicant: Hitachi High-Tech CorporationInventors: Hideyuki Kotsuji, Toshiyuki Yokosuka, Hajime Kawano
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Patent number: 10991529Abstract: An object is to enhance direct-current insulating performance of a gas-blast circuit breaker. The gas-blast circuit breaker includes: a pair of main contacts disposed in a gas tank to face each other and configured to operate for opening and closing a circuit; a pair of arc contacts disposed to face each other and configured to operate for opening and closing the circuit, the arc contacts being disposed coaxially with the main contacts at locations close to the centers of the main contacts, respectively; and an elastic electrically conductive material disposed on an outer surface of an insulating nozzle facing an inner surface of one of the main contacts.Type: GrantFiled: August 3, 2018Date of Patent: April 27, 2021Assignee: Hitachi, Ltd.Inventors: Hideyuki Kotsuji, Jun Nukaga, Makoto Hirose, Takahiro Nishimura
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Publication number: 20210082644Abstract: A movable main contact; a movable arc contact; a puffer cylinder including the movable main contact; a hollow rod that is arranged inside the puffer cylinder, includes the movable arc contact, and has an inner space through which an insulating gas flows; a thermal puffer chamber surrounded by the puffer cylinder and the hollow rod; an insulating cover that is provided to the hollow rod, and covers the movable arc contact; an insulating nozzle provided to the puffer cylinder; and a cylindrical flow guide extending in the axial direction are included. The flow guide is installed in the thermal puffer chamber, positioned on the outer circumference side of the hollow rod, and connected to the insulating nozzle. The space between the flow guide and the hollow rod is connected to the space between the insulating nozzle and the insulating cover, and serves as a flow path of the insulating gas.Type: ApplicationFiled: July 30, 2020Publication date: March 18, 2021Inventors: Hideyuki KOTSUJI, Hajime URAI, Masanao TERADA, Takahiro NISHIMURA, Yuichiro YAMANE
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Publication number: 20200279704Abstract: An object is to enhance direct-current insulating performance of a gas-blast circuit breaker. The gas-blast circuit breaker includes: a pair of main contacts disposed in a gas tank to face each other and configured to operate for opening and closing a circuit; a pair of arc contacts disposed to face each other and configured to operate for opening and closing the circuit, the arc contacts being disposed coaxially with the main contacts at locations close to the centers of the main contacts, respectively; and an elastic electrically conductive material disposed on an outer surface of an insulating nozzle facing an inner surface of one of the main contacts.Type: ApplicationFiled: August 3, 2018Publication date: September 3, 2020Inventors: Hideyuki KOTSUJI, Jun NUKAGA, Makoto HIROSE, Takahiro NISHIMURA
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Publication number: 20180226214Abstract: There is provided a gas circuit breaker that includes: a puffer shaft connected to one of a pair of arcing contacts, a puffer cylinder that is coaxially provided on an outer circumference of the puffer shaft, an insulating nozzle that is fixed to the puffer cylinder on a breaker side, an insulating rod that connects the puffer shaft and an operating device to each other, a shaft guide that is provided on an outer circumference of the puffer shaft and the insulating rod, and an exhaust guide that is provided on an outer circumference of the shaft guide, in which hot gas is discharged into a gas tank through a shaft exhaust hole of the puffer shaft, between the puffer shaft and the shaft guide, and a conductor exhaust hole of a movable side exhaust conductor in the middle of interrupting operation, the shaft exhaust hole of the puffer shaft communicates with a shaft guide exhaust hole of the shaft guide in a region near a current zero point before the termination of the interrupting operation, and thus an exhauType: ApplicationFiled: December 27, 2017Publication date: August 9, 2018Inventors: Hideyuki KOTSUJI, Hajime URAI, Masanao TERADA, Makoto HIROSE
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Patent number: 9336974Abstract: A pair of arcing contacts 3 and 5 facing each other are placed in a tank 1 to perform opening and closing operation, and a puffer cylinder 7 is coaxially provided on the circumference of one arcing contact 5. A puffer chamber 9 is comprised of the puffer cylinder 7, a fixed piston 6, and a hollow rod 8. An insulating nozzle 4 forming a space communicating with the puffer chamber 9 is provided. An exhaust tube 2 for exhausting and cooling hot gas discharged from an arc produced in the insulating nozzle 4 is provided on the circumference of the other arcing contact 3. A structure 11 for temporarily reducing the flow path area is provided on the inner circumferential surface at short of the end portion of the exhaust tube 2.Type: GrantFiled: October 9, 2013Date of Patent: May 10, 2016Assignee: Hitachi, Ltd.Inventors: Hideyuki Kotsuji, Hajime Urai, Makoto Koizumi, Makoto Hirose
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Publication number: 20150170858Abstract: A pair of arcing contacts 3 and 5 facing each other are placed in a tank 1 to perform opening and closing operation, and a puffer cylinder 7 is coaxially provided on the circumference of one arcing contact 5. A puffer chamber 9 is comprised of the puffer cylinder 7, a fixed piston 6, and a hollow rod 8. An insulating nozzle 4 forming a space communicating with the puffer chamber 9 is provided. An exhaust tube 2 for exhausting and cooling hot gas discharged from an arc produced in the insulating nozzle 4 is provided on the circumference of the other arcing contact 3. A structure 11 for temporarily reducing the flow path area is provided on the inner circumferential surface at short of the end portion of the exhaust tube 2.Type: ApplicationFiled: October 19, 2013Publication date: June 18, 2015Applicant: Hitachi, Ltd.Inventors: Hideyuki Kotsuji, Hajime Urai, Makoto Koizumi, Makoto Hirose