Patents by Inventor Katsuya Yoshida
Katsuya Yoshida 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: 11921426Abstract: A substrate processing method includes a preprocessing forming step of forming a preprocessing film on a surface of a substrate having the surface on which a first region and a second region in which different substances are exposed are present, a preprocessing film separating step of separating the preprocessing film from the surface of the substrate with a stripping liquid, a processing film forming step of forming a processing film on the surface of the substrate after the preprocessing film separating step, and a processing film separating step of separating the processing film from the surface of the substrate with the stripping liquid.Type: GrantFiled: November 29, 2022Date of Patent: March 5, 2024Assignee: SCREEN Holdings Co., Ltd.Inventors: Katsuya Akiyama, Yukifumi Yoshida, Song Zhang
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Patent number: 11739404Abstract: An object of the present disclosure is to provide a method for manufacturing an aluminum alloy plastically-processed article, capable of preventing a burning crack from occurring due to processing heat generated during plasticity processing while maintaining a solution-treatment temperature of an aluminum alloy material for ensuring a mechanical strength thereof. A method for manufacturing an aluminum alloy plastically-processed article, includes a step of performing a solution treatment for an aluminum alloy material by heating and maintaining the aluminum alloy material at a solution-treatment temperature, a step of performing plasticity processing for the aluminum alloy material subjected to the solution treatment, and steps of cooling the plastically-processed aluminum alloy material at a time at which the step of the plasticity processing is completed, and aging the cooled aluminum alloy material.Type: GrantFiled: November 17, 2020Date of Patent: August 29, 2023Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, KOBE STEEL, LTD.Inventors: Kazuhiro Suzuki, Takehito Kobayashi, Masayuki Isogawa, Katsuya Yoshida, Chihiro Asai, Masahiro Yamada, Masayuki Hori
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Patent number: 11642909Abstract: Provided is a writing instrument which includes a pen tip part; a coating liquid storage section; a cylindrical part so as to cover the coating liquid storage section, and fixed to the pen tip part; a valve mechanism disposed at a tip end portion of the coating liquid storage section; an operation member configured to open the valve mechanism and allow the coating liquid flowing out from the coating liquid storage section to flow toward a pen tip side via the valve mechanism; and a cylindrical elastic member connecting the valve mechanism with the operation member. The coating liquid storage section is relatively movable to the pen tip part in the axial direction, and the operation member is configured to open the valve mechanism in association with the relative movement of the coating liquid storage section to the pen tip part.Type: GrantFiled: May 26, 2022Date of Patent: May 9, 2023Assignee: KURETAKE CO., LTD.Inventors: Katsuya Yoshida, Shigeaki Kosaka
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Patent number: 11535918Abstract: An object of the present disclosure is to provide a method for manufacturing an aluminum alloy plastically-processed article, capable of preventing a burning crack from occurring due to processing heat generated during plasticity processing while maintaining a solution-treatment temperature of an aluminum alloy material for ensuring a mechanical strength thereof. A method for manufacturing an aluminum alloy plastically-processed article, includes a step of performing a solution treatment for an aluminum alloy material by heating and maintaining the aluminum alloy material at a solution-treatment temperature, a step of performing plasticity processing for the aluminum alloy material subjected to the solution treatment, and steps of cooling the plastically-processed aluminum alloy material at a time at which the step of the plasticity processing is completed, and aging the cooled aluminum alloy material.Type: GrantFiled: November 17, 2020Date of Patent: December 27, 2022Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, KOBE STEEL, LTD.Inventors: Kazuhiro Suzuki, Takehito Kobayashi, Masayuki Isogawa, Katsuya Yoshida, Chihiro Asai, Masahiro Yamada, Masayuki Hori
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Publication number: 20220379651Abstract: Provided is a writing instrument which includes a pen tip part; a coating liquid storage section; a cylindrical part so as to cover the coating liquid storage section, and fixed to the pen tip part; a valve mechanism disposed at a tip end portion of the coating liquid storage section; an operation member configured to open the valve mechanism and allow the coating liquid flowing out from the coating liquid storage section to flow toward a pen tip side via the valve mechanism; and a cylindrical elastic member connecting the valve mechanism with the operation member. The coating liquid storage section is relatively movable to the pen tip part in the axial direction, and the operation member is configured to open the valve mechanism in association with the relative movement of the coating liquid storage section to the pen tip part.Type: ApplicationFiled: May 26, 2022Publication date: December 1, 2022Inventors: Katsuya Yoshida, Shigeaki Kosaka
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Publication number: 20210180167Abstract: An object of the present disclosure is to provide a method for manufacturing an aluminum alloy plastically-processed article, capable of preventing a burning crack from occurring due to processing heat generated during plasticity processing while maintaining a solution-treatment temperature of an aluminum alloy material for ensuring a mechanical strength thereof. A method for manufacturing an aluminum alloy plastically-processed article, includes a step of performing a solution treatment for an aluminum alloy material by heating and maintaining the aluminum alloy material at a solution-treatment temperature, a step of performing plasticity processing for the aluminum alloy material subjected to the solution treatment, and steps of cooling the plastically-processed aluminum alloy material at a time at which the step of the plasticity processing is completed, and aging the cooled aluminum alloy material.Type: ApplicationFiled: November 17, 2020Publication date: June 17, 2021Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuhiro SUZUKI, Takehito KOBAYASHI, Masayuki ISOGAWA, Katsuya YOSHIDA, Chihiro ASAI, Masahiro YAMADA
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Patent number: 7171813Abstract: A fuel injection nozzle has a cylindrical nozzle body having a cavity where fuel passes through. A plurality of hollow spokes, each having an aerofoil cross section, are provided around the nozzle body. Each hollow spoke has four fuel injection holes in total on both side surfaces, i.e., two fuel injection holes on each side surface, to inject the fuel, with a distance from the surface of the nozzle body. The inside of each hollow spoke is hollow. The hollow spoke injects the fuel sent to the hollow nozzle body, from the fuel injection holes through the inside of the hollow spoke.Type: GrantFiled: May 19, 2003Date of Patent: February 6, 2007Assignee: Mitsubishi Heavy Metal Industries, Ltd.Inventors: Katsunori Tanaka, Katsuya Yoshida
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Patent number: 6996020Abstract: A plurality of dummy bit lines are disposed together with a plurality of bit line pairs in a memory cell array. In selectively driving a memory cell connected to the bit line pair, a timing control circuit controls the timing of the driving operation, based on signal change in the plural dummy bit lines, thereby detecting the influences of the process variation in a plurality of positions in the memory cell array. Thus, the influence of the process variation given to the operation of a semiconductor memory device can be further alleviated, compared with the case when one dummy bit line is used.Type: GrantFiled: November 25, 2003Date of Patent: February 7, 2006Assignee: Fujistu LimitedInventor: Katsuya Yoshida
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Publication number: 20040114424Abstract: A plurality of dummy bit lines are disposed together with a plurality of bit line pairs in a memory cell array. In selectively driving a memory cell connected to the bit line pair, a timing control circuit controls the timing of the driving operation, based on signal change in the plural dummy bit lines, thereby detecting the influences of the process variation in a plurality of positions in the memory cell array. Thus, the influence of the process variation given to the operation of a semiconductor memory device can be further alleviated, compared with the case when one dummy bit line is used.Type: ApplicationFiled: November 25, 2003Publication date: June 17, 2004Applicant: Fujitsu LimitedInventor: Katsuya Yoshida
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Publication number: 20040020210Abstract: A fuel injection nozzle has a cylindrical nozzle body having a cavity where fuel passes through. A plurality of hollow spokes, each having an aerofoil cross section, are provided around the nozzle body. Each hollow spoke has four fuel injection holes in total on both side surfaces, i.e., two fuel injection holes on each side surface, to inject the fuel, with a distance from the surface of the nozzle body. The inside of each hollow spoke is hollow. The hollow spoke injects the fuel sent to the hollow nozzle body, from the fuel injection holes through the inside of the hollow spoke.Type: ApplicationFiled: May 19, 2003Publication date: February 5, 2004Inventors: Katsunori Tanaka, Katsuya Yoshida
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Publication number: 20020119772Abstract: In a base testing apparatus for use in testing an active base transceiver station (BTS) in a CDMA system, a plurality of pre-set attenuators are arranged for respective sectors of a service area assigned to the BTS and are included in correspondence to a plurality of sector TRXs of the BTS so as to simulate a softer handover test of the active BTS between a test sector and its adjacent sector. To this end, each of the pre-set attenuators is structured so that at least three kinds of attenuation values, such as 0 dB, −3 dB, and −50 dB. can be realized and are selected from one to another under control of a switching controller. With this structure, the pre-set attenuator of a test sector is put into a state of 0 dB while its adjacent pre-set attenuator and the other attenuators are put into a state of −3 dB and a state of −50 dB, respectively. Controlling the attenuation values in the above-mentioned manner is helpful to simulate the softer handover test of the active BTS.Type: ApplicationFiled: February 25, 2002Publication date: August 29, 2002Applicant: NEC CORPORATIONInventor: Katsuya Yoshida
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Patent number: 6256239Abstract: A redundancy decision circuit for specifying a redundant memory cell in a memory cell array when a normal cell is defective. The circuit includes a switching element, a fuse and a load circuit connected in series between high and low potential supplies. A switching driver drives the switching element. A hold circuit latches the potential at a node between the switching element and one of either the fuse and the load circuit. The circuit then generates a redundant decision signal.Type: GrantFiled: August 9, 2000Date of Patent: July 3, 2001Assignee: Fujitsu LimitedInventors: Tamiji Akita, Katsuya Yoshida
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Patent number: 6128234Abstract: A redundancy decision circuit for specifying a redundant memory cell in a memory cell array when a normal cell is defective. The circuit includes a switching element, a fuse and a load circuit connected in series between high and low potential supplies. A switching driver drives the switching element. A hold circuit latches the potential at a node between the switching element and one of either the fuse and the load circuit. The circuit then generates a redundant decision signal.Type: GrantFiled: May 12, 1999Date of Patent: October 3, 2000Assignee: Fujitsu LimitedInventors: Tamiji Akita, Katsuya Yoshida
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Patent number: 6118708Abstract: The present invention concerns a memory structure wherein a plurality of memory cells such as SRAM are provided in columns and a plurality of bit line pairs are provided for each column. A write circuit drives a first bit line pair and writes data to the memory cells in the column; at the same time, a sense amp reads data by means of the second bit line pair. In that case, the first bit line pair and second bit line pair, provided in the same column, are driven with opposite phase signals. To prevent the reversal of the small potential difference of the second bit line pair for reading at that time, two bit lines, one bit line from the first and second bit line pairs, are arranged parallel in a first wiring layer and are interspersed with a fixed potential wiring. Furthermore, the two other bit lines from the first and second bit line pairs, are arranged parallel in a second wiring layer provided via an insulating layer and are interspersed with a fixed potential wiring.Type: GrantFiled: December 11, 1998Date of Patent: September 12, 2000Assignee: Fujitsu LimitedInventors: Katsuya Yoshida, Tamiji Akita, Kenji Ijitsu