Patents by Inventor Tadahiko Yoshioka

Tadahiko Yoshioka 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).

  • Publication number: 20230326631
    Abstract: Provided is a current detection resistor, such as a shunt resistor, wherein a. low specific resistance and a small thermal electromotive force with respect to copper are achieved, while maintaining a low TCR. A resistance alloy for use in a current detection shunt resistor includes 4.5 to 5.5 mass % of manganese, 0.05 to 0.30 mass % of silicon, 0.10 to 0.30 mass % of iron, and a balance being copper, and has a specific resistance of 15 to 25 ??·m.
    Type: Application
    Filed: July 16, 2021
    Publication date: October 12, 2023
    Inventors: Yoshitaka KUMEDA, Tadahiko YOSHIOKA
  • Publication number: 20230287540
    Abstract: Provided is a resistance alloy enabling a decrease in the TCR of a shunt resistor for use in a current detection device capable of detecting large currents. A copper-manganese based resistance alloy for use in a shunt resistor further comprises tin and nickel and has a TCR less than or equal to ?36×10?6/K at 100° C. with reference to 25° C.
    Type: Application
    Filed: May 20, 2021
    Publication date: September 14, 2023
    Inventors: Naoki KANAUCHI, Yoshitaka KUMEDA, Tadahiko YOSHIOKA
  • Publication number: 20230133344
    Abstract: Provided is a copper-manganese-nickel based alloy having characteristics (in particular, specific resistance) close to those of a nickel-chromium based alloy. It is also an objective to provide an alloy having high processability compared to a nickel-chromium based alloy. An alloy for a resistive body includes copper, manganese, and nickel, wherein the manganese is 33 to 38% by mass, and the nickel is 8 to 15% by mass.
    Type: Application
    Filed: March 22, 2021
    Publication date: May 4, 2023
    Inventors: Naoki KANAUCHI, Yoshitaka KUMEDA, Tadahiko YOSHIOKA
  • Publication number: 20220328217
    Abstract: The resistive material contains copper and manganese, an oxide film of manganese being formed on a surface of the resistive material.
    Type: Application
    Filed: August 6, 2020
    Publication date: October 13, 2022
    Inventors: Reina KANEKO, Yoshitaka KUMEDA, Tadahiko YOSHIOKA
  • Patent number: 10163553
    Abstract: Provided is a resistor including a first electrode, a second electrode, and a resistive element disposed between the first and second electrodes. Each of the first and second electrodes includes a main electrode portion and a narrow electrode portion with a narrower width than that of the main electrode portion. The resistive element is disposed between the two narrow electrode portions.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: December 25, 2018
    Assignee: KOA CORPORATION
    Inventors: Kenji Kameko, Kosuke Arai, Tadahiko Yoshioka
  • Patent number: 10157700
    Abstract: Provided is a method for producing a resistor, including a step of forming a through-hole in a sheet-like conductive material; a step of fitting a resistive element piece into the through-hole and thus forming joint portions where end surfaces of the resistive element piece are joined to respective side surfaces of the conductive material exposed by the through-hole; and stamping a region including the joint portions from the conductive material, thereby forming a resistor including a resistive element and a pair of electrodes.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: December 18, 2018
    Assignee: KOA CORPORATION
    Inventors: Kosuke Arai, Tadahiko Yoshioka
  • Publication number: 20180174721
    Abstract: Provided is a resistor including a first electrode, a second electrode, and a resistive element disposed between the first and second electrodes. Each of the first and second electrodes includes a main electrode portion and a narrow electrode portion with a narrower width than that of the main electrode portion. The resistive element is disposed between the two narrow electrode portions.
    Type: Application
    Filed: June 8, 2016
    Publication date: June 21, 2018
    Inventors: Kenji KAMEKO, Kosuke ARAI, Tadahiko YOSHIOKA
  • Publication number: 20170221614
    Abstract: Provided is a method for producing a resistor, including a step of forming a through-hole in a sheet-like conductive material; a step of fitting a resistive element piece into the through-hole and thus forming joint portions where end surfaces of the resistive element piece are joined to respective side surfaces of the conductive material exposed by the through-hole; and stamping a region including the joint portions from the conductive material, thereby forming a resistor including a resistive element and a pair of electrodes.
    Type: Application
    Filed: April 9, 2015
    Publication date: August 3, 2017
    Inventors: Kosuke ARAI, Tadahiko YOSHIOKA
  • Patent number: 9561639
    Abstract: The present invention provides an intermediate film for laminated glass that can increase the heat-insulating properties of laminated glass. The intermediate film for laminated glass according to the present invention is an intermediate film for laminated glass having a one-layer structure or a laminated structure of two or more layers, an intermediate film 1 for laminated glass has a first layer 2 containing silicon dioxide particles 51 having hollow parts and shell parts and having a porosity of 40% or more and 80% or less, when the intermediate film 1 for laminated glass has a one-layer structure, the first layer further contains a thermoplastic resin, and when the intermediate film 1 for laminated glass has a laminated structure of two or more layers, the intermediate film 1 for laminated glass further has a second layer 3 which is arranged on a first surface 2a side of the first layer 2 and which contains a thermoplastic resin.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: February 7, 2017
    Assignees: SEKISUI CHEMICAL CO., LTD., GRANDEX CO., LTD., NAGOYA INSTITUTE OF TECHNOLOGY
    Inventors: Juichi Fukatani, Daizou Ii, Tadahiko Yoshioka, Masayoshi Fuji, Kyoichi Fujimoto, Chika Takai, Kozo Hayashi
  • Patent number: 9378873
    Abstract: Provided is a shunt resistor, which controls an influence of skin effect by high frequency current. The shunt resistor has a rod-shaped resistance body (11), and a pair of main electrode (12), of another material from the resistance body, wherein end faces of the resistance body and the main electrode are bonded. The resistance body (11) has a hole (11a) going through in direction where main electrodes are disposed, or a high resistance part (11b) going through at its axis portion that is highly resistive than outer part, and low resistance part (11c) that is formed in outer of the high resistance part. It is preferable that outer circumference of the resistance body is circle-shaped. Since, current doesn't flow fundamentally in the through hole or the high resistance part, fluctuation band in the current pathway can be reduced. Therefore, change of resistance value by skin effect by high-frequency current can be reduced.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: June 28, 2016
    Assignee: KOA CORPORATION
    Inventors: Tadahiko Yoshioka, Koichi Hirasawa, Yoshinori Aruga
  • Patent number: 9293242
    Abstract: Provided is a voltage detection circuit, which can remove influence of error voltage caused by tiny amount of self-inductance existing in a shunt resistor, though in the resistor for large current usage, which is impossible to surface-mount on a voltage detection circuit board. The shunt resistor device comprises: a resistance body (11); a pair of main electrode (12) for flowing current to be monitored through the resistance body; a pair of detection terminal (13a) for detecting voltage caused in the resistance body; and a pair of wiring (23) each electrically connected to the detection terminal. And, a pair of voltage detection wiring consisting of the detection terminal (13a) and the wiring (23) is brought closer, at prescribed location, than distance between each of connection position of the pair of the detection terminal (13a) on the main electrode (12).
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: March 22, 2016
    Assignee: KOA CORPORATION
    Inventors: Tadahiko Yoshioka, Koichi Hirasawa, Yoshinori Aruga
  • Publication number: 20140125429
    Abstract: Provided is a voltage detection circuit, which can remove influence of error voltage caused by tiny amount of self-inductance existing in a shunt resistor, though in the resistor for large current usage, which is impossible to surface-mount on a voltage detection circuit board. The shunt resistor device comprises: a resistance body (11); a pair of main electrode (12) for flowing current to be monitored through the resistance body; a pair of detection terminal (13a) for detecting voltage caused in the resistance body; and a pair of wiring (23) each electrically connected to the detection terminal. And, a pair of voltage detection wiring consisting of the detection terminal (13a) and the wiring (23) is brought closer, at prescribed location, than distance between each of connection position of the pair of the detection terminal (13a) on the main electrode (12).
    Type: Application
    Filed: July 20, 2012
    Publication date: May 8, 2014
    Applicant: KOA CORPORATION
    Inventors: Tadahiko Yoshioka, Koichi Hirasawa, Yoshinori Aruga
  • Publication number: 20140097933
    Abstract: Provided is a shunt resistor, which controls an influence of skin effect by high frequency current. The shunt resistor has a rod-shaped resistance body (11), and a pair of main electrode (12), of another material from the resistance body, wherein end faces of the resistance body and the main electrode are bonded. The resistance body (11) has a hole (11a) going through in direction where main electrodes are disposed, or a high resistance part (11b) going through at its axis portion that is highly resistive than outer part, and low resistance part (11c) that is formed in outer of the high resistance part. It is preferable that outer circumference of the resistance body is circle-shaped. Since, current doesn't flow fundamentally in the through hole or the high resistance part, fluctuation band in the current pathway can be reduced. Therefore, change of resistance value by skin effect by high-frequency current can be reduced.
    Type: Application
    Filed: December 11, 2013
    Publication date: April 10, 2014
    Applicant: KOA CORPORATION
    Inventors: Tadahiko Yoshioka, Koichi Hirasawa, Yoshinori Aruga
  • Publication number: 20130224466
    Abstract: The present invention provides an intermediate film for laminated glass that can increase the heat-insulating properties of laminated glass. The intermediate film for laminated glass according to the present invention is an intermediate film for laminated glass having a one-layer structure or a laminated structure of two or more layers, an intermediate film 1 for laminated glass has a first layer 2 containing silicon dioxide particles 51 having hollow parts and shell parts and having a porosity of 40% or more and 80% or less, when the intermediate film 1 for laminated glass has a one-layer structure, the first layer further contains a thermoplastic resin, and when the intermediate film 1 for laminated glass has a laminated structure of two or more layers, the intermediate film 1 for laminated glass further has a second layer 3 which is arranged on a first surface 2a side of the first layer 2 and which contains a thermoplastic resin.
    Type: Application
    Filed: November 9, 2011
    Publication date: August 29, 2013
    Inventors: Juichi Fukatani, Daizon Il, Tadahiko Yoshioka, Masayoshi Fuji, Kyoichi Fujimoto, Chika Takai, Kozo Hayashi
  • Patent number: 8475927
    Abstract: A dispersion of tin-doped indium oxide fine particles has tin-doped indium oxide fine particles, a plasticizer for an interlayer film, an organic solvent containing alcohols as a main component, and a dispersion stabilizer, wherein under measuring conditions of a concentration of tin-doped indium oxide fine particles of 0.7% by weight and an optical path length of a glass cell of 1 mm, a visible light transmittance is 80% or more, a solar radiation transmittance at a wavelength within a range from 300 nm to 2100 nm is ¾ or less of the visible light transmittance, a haze value is 1.0% or less, and a reflection yellow index is ?20 or more.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: July 2, 2013
    Assignees: Mitsubishi Materials Corporation, Jemco Inc., Sekisui Chemical Co., Ltd.
    Inventors: Masahiro Hagiwara, Takeshi Nakagawa, Juichi Fukatani, Tadahiko Yoshioka, Bungo Hatta
  • Patent number: 8471674
    Abstract: Provided is a shunt resistor which has an excellent accuracy of current detection and a small temperature drift as well as a compact structure, and improves the operability. The shunt resistor is provided with a resistance body (11), a pair of main electrodes (12, 12) separated from the resistance body, and a pair of voltage detection electrodes (13, 13) separated from the main electrodes. The voltage detection electrodes (13) are provided and fixed between the resistance body (11) and the main electrodes (12). The voltage detection electrode (13) is provided with a detection terminal (13a) to be connected to a terminal of a voltage detection circuit. The resistance body (11) has a columnar shape. The voltage detection electrode (13) and main electrode (12) are fixed to both end faces of the resistance body (11) in the length direction, so that they are opposing each other. The components are bonded by diffusion boding, friction bonding, wax bonding, etc., after abutting the bonding surfaces with each other.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: June 25, 2013
    Assignee: Koa Corporation
    Inventor: Tadahiko Yoshioka
  • Publication number: 20120258297
    Abstract: A dispersion of tin-doped indium oxide fine particles has tin-doped indium oxide fine particles, a plasticizer for an interlayer film, an organic solvent containing alcohols as a main component, and a dispersion stabilizer, wherein under measuring conditions of a concentration of tin-doped indium oxide fine particles of 0.7% by weight and an optical path length of a glass cell of 1 mm, a visible light transmittance is 80% or more, a solar radiation transmittance at a wavelength within a range from 300 nm to 2100 nm is ¾ or less of the visible light transmittance, a haze value is 1.0% or less, and a reflection yellow index is ?20 or more.
    Type: Application
    Filed: June 19, 2012
    Publication date: October 11, 2012
    Applicants: MITSUBISHI MATERIALS CORPORATION, JEMCO INC., SEKISUI CHEMICAL CO., LTD.
    Inventors: Masahiro HAGIWARA, Takeshi NAKAGAWA, Juichi FUKATANI, Tadahiko YOSHIOKA, Bungo HATTA
  • Publication number: 20120229247
    Abstract: Provided is a shunt resistor which has an excellent accuracy of current detection and a small temperature drift as well as a compact structure, and improves the operability. The shunt resistor is provided with a resistance body (11), a pair of main electrodes (12, 12) separated from the resistance body, and a pair of voltage detection electrodes (13, 13) separated from the main electrodes. The voltage detection electrodes (13) are provided and fixed between the resistance body (11) and the main electrodes (12). The voltage detection electrode (13) is provided with a detection terminal (13a) to be connected to a terminal of a voltage detection circuit. The resistance body (11) has a columnar shape. The voltage detection electrode (13) and main electrode (12) are fixed to both end faces of the resistance body (11) in the length direction, so that they are opposing each other. The components are bonded by diffusion boding, friction bonding, wax bonding, etc., after abutting the bonding surfaces with each other.
    Type: Application
    Filed: May 17, 2012
    Publication date: September 13, 2012
    Applicant: KOA CORPORATION
    Inventor: Tadahiko Yoshioka
  • Patent number: 8221535
    Abstract: A dispersion of tin-doped indium oxide fine particles has tin-doped indium oxide fine particles, a plasticizer for an interlayer film, an organic solvent containing alcohols as a main component, and a dispersion stabilizer, wherein under measuring conditions of a concentration of tin-doped indium oxide fine particles of 0.7% by weight and an optical path length of a glass cell of 1 mm, a visible light transmittance is 80% or more, a solar radiation transmittance at a wavelength within a range from 300 nm to 2100 nm is ¾ or less of the visible light transmittance, a haze value is 1.0% or less, and a reflection yellow index is ?20 or more.
    Type: Grant
    Filed: June 11, 2004
    Date of Patent: July 17, 2012
    Assignees: Mitsubishi Materials Corporation, Jemco Inc., Sekisui Chemical Co., Ltd.
    Inventors: Masahiro Hagiwara, Takeshi Nakagawa, Juichi Fukatani, Tadahiko Yoshioka, Bungo Hatta
  • Patent number: 7909959
    Abstract: It is an object of the invention to provide a separation method of an adherend capable of easily and reliably separating an adherend stuck using an adhesive, a method for recovering an electronic part from an electronic part laminate, and a separation method of laminate glass. The invention provides a separation method of an adherend, which is a method of separating an adherend stuck by using an adhesive, and comprises the steps of: air-tightly sealing the adherend together with a fluid being a gas at a normal temperature and normal pressure in a pressure resistant container, making the inside of the pressure resistant container in a high pressure state, and releasing the pressure of the inside of the pressure resistant container.
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: March 22, 2011
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Toshio Tada, Yohei Nishimura, Katsunori Toyoshima, Juichi Fukatani, Tadahiko Yoshioka