Patents by Inventor Yoshiyuki Oya

Yoshiyuki Oya 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).

  • Patent number: 11356264
    Abstract: An authentication system includes an authentication unit that performs an authentication process between a first communication device and a second communication device when the first communication device and the second communication device communicate. The authentication unit performs the authentication process by transmitting authentication information from one of the first communication device and the second communication device to the other one, calculating the authentication information with an encryption code in each of the first communication device and the second communication device, and evaluating a calculation result. During a processing series in the authentication process, the authentication unit performs a first authentication based on part of the calculation result transmitted between the first and second communication device, and a second authentication based on another part of the calculation result transmitted between the first and second communication device.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: June 7, 2022
    Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Kazuki Naiki, Hiroaki Iwashita, Kenichi Koga, Yoshiyuki Oya, Yoshiki Oishi
  • Patent number: 11351962
    Abstract: An electronic key system determines that legitimate communication has been performed on the basis of conditions including that a measured distance from a ranging request unit to a ranging response unit measured on the basis of a ranging request signal and a ranging response signal is within a threshold range that is set on the basis of the distance from a communication area of a transmission antenna where an electronic key is determined to be located by a key location determination unit to one of either the ranging request unit or the ranging response unit that is provided in an on-board device.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: June 7, 2022
    Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Hiroaki Iwashita, Yoshiyuki Oya, Kazuki Naiki
  • Publication number: 20210207901
    Abstract: An aluminum alloy heat exchanger includes a core material formed of an aluminum alloy including Mn of 0.60 to 2.00 mass % and Cu of 1.00 mass % or less, with the balance being Al and inevitable impurities, and a sacrificial anode material formed of an aluminum alloy including Zn of 2.50 to 10.00 mass %, with the balance being Al and inevitable impurities. Pitting potential of a sacrificial anode material surface of a tube of the aluminum alloy heat exchanger in a 5% NaCl solution is ?800 (mV vs Ag/AgCl) or less, and pitting potential of an aluminum fin of the aluminum alloy heat exchanger in a 5% NaCl solution is equal to or more than the pitting potential of the sacrificial anode material surface of the tube of the aluminum alloy heat exchanger in a 5% NaCl solution.
    Type: Application
    Filed: May 17, 2019
    Publication date: July 8, 2021
    Applicants: UACJ CORPORATION, DENSO CORPORATION
    Inventors: Tomohiro Shoji, Yoshihiko Kyo, Atsushi Fukumoto, Yoshiyuki Oya, Takahiro Shinoda, Koichi Nakashita, Naoto Goto
  • Publication number: 20210199395
    Abstract: An aluminum alloy heat exchanger includes a core material formed of an aluminum alloy comprising Mn of 0.60 to 2.00 mass % and Cu of 1.00 mass % or less, with the balance being Al and inevitable impurities, and a sacrificial anode material formed of an aluminum alloy comprising Zn of 2.50 to 10.00 mass %, with the balance being Al and inevitable impurities. Pitting potential of a sacrificial anode material surface of a tube of the aluminum alloy heat exchanger in a 5% NaCl solution is ?800 (mV vs Ag/AgCl) or less, and pitting potential of an aluminum fin of the aluminum alloy heat exchanger in a 5% NaCl solution is less than the pitting potential of the sacrificial anode material surface of the tube of the aluminum alloy heat exchanger in a 5% NaCl solution.
    Type: Application
    Filed: May 17, 2019
    Publication date: July 1, 2021
    Applicants: UACJ Corporation, DENSO CORPORATION
    Inventors: Tomohiro Shoji, Yoshihiko Kyo, Atsushi Fukumoto, Yoshiyuki Oya, Takahiro Shinoda, Koichi Nakashita, Naoto Goto
  • Publication number: 20210071970
    Abstract: An aluminum alloy heat exchanger for an exhaust gas recirculation system, obtained by brazing: a tube material comprising at least a core material made of aluminum alloy comprising 0.10 to 1.50% of Si, 0.05 to 3.00% of Cu, and 0.40 to 2.00% of Mn, and a sacrificial anticorrosion material made of aluminum alloy comprising 2.00 to 6.00% of Zn, with a Si content of less than 0.10%, clad on the inner side surface of the core material; and a fin material comprising a core material made of aluminum alloy comprising 0.10 to 1.50% of Si, and 0.40 to 2.00% of Mn, with a Zn content of less than 0.05%, and a brazing material clad on both surfaces of the core material, made of aluminum alloy comprising 3.00 to 13.00% of Si, with a Zn content of less than 0.05%.
    Type: Application
    Filed: March 27, 2019
    Publication date: March 11, 2021
    Applicants: UACJ Corporation, DENSO CORPORATION
    Inventors: Yoshiyuki Oya, Tomohiro Shoji, Atsushi Fukumoto, Kouki Nishiyama, Toru Ikeda, Takahiro Shinoda
  • Publication number: 20210033359
    Abstract: An aluminum alloy heat exchanger for an exhaust gas recirculation system, which is a heat exchanger installed in an exhaust gas recirculation system of an internal combustion engine to cool the exhaust gas comprises a tube provided with a sacrificial anticorrosion material on a side along which the exhaust gas passes, and a fin brazed to the surface side of the sacrificial anticorrosion material of the tube, the fin having a pitting potential higher than the pitting potential of the surface of the sacrificial anticorrosion material of the tube. According to the disclosure, an aluminum alloy heat exchanger for an exhaust gas recirculation system having a long service life with effective function of the sacrificial anticorrosion even under an acidic environment in which an oxide film is weakened as a whole and pitting corrosion is unlikely to occur can be provided.
    Type: Application
    Filed: March 27, 2019
    Publication date: February 4, 2021
    Applicants: UACJ Corporation, DENSO CORPORATION
    Inventors: Yoshiyuki Oya, Tomohiro Shoji, Atsushi Fukumoto, Kouki Nishiyama, Toru Ikeda, Takahiro Shinoda
  • Publication number: 20210025663
    Abstract: An aluminum alloy heat exchanger for an exhaust gas recirculation system, the heat exchanger obtained by brazing: a tube material comprising a core material comprising 0.05 mass % to 1.50 mass % of Si, 0.05 mass % to 3.00 mass % of Cu, and 0.40 mass % to 2.00 mass % of Mn, and a sacrificial anticorrosion material comprising 2.00 mass % to 6.00 mass % of Zn, clad on an inner side surface of the core material; and a fin material comprising a core material comprising 0.05 mass to 1.50 mass % of Si, and 0.40 mass % to 2.00 mass % of Mn, and a brazing material comprising 3.00 mass % to 13.00 mass % of Si, clad on both surfaces of the core material; the heat exchanger having a ratio of a surface area Sb (mm2) of the fin material to a surface area Sa (mm2) of the sacrificial anticorrosion material of less than 200%.
    Type: Application
    Filed: March 27, 2019
    Publication date: January 28, 2021
    Applicants: UACJ Corporation, DENSO CORPORATION
    Inventors: Yoshiyuki Oya, Tomohiro Shoji, Atsushi Fukumoto, Kouki Nishiyama, Toru Ikeda, Takahiro Shinoda
  • Publication number: 20210011143
    Abstract: A distance measurement system includes communication units arranged in a communication subject. The communication units form different radio wave transmission paths in accordance with a location of a communication device, and are configured such that when one of the radio wave transmission paths is blocked, communication with the communication device is enabled by another one of the radio wave transmission paths. The distance measurement system further includes a distance measurement unit that measures the distance between the communication device and the communication subject using one of the radio wave transmission paths by performing distance measurement communication that transfers a distance measurement signal between the communication units and the communication device.
    Type: Application
    Filed: February 28, 2019
    Publication date: January 14, 2021
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Kazuki NAIKI, Hiroaki IWASHITA, Satoshi MORI, Kenichi KOGA, Yoshiyuki OYA, Masateru FURUTA, Masanori KOSUGI
  • Publication number: 20200374122
    Abstract: An authentication system includes an authentication unit that performs an authentication process between a first communication device and a second communication device when the first communication device and the second communication device communicate. The authentication unit performs the authentication process by transmitting authentication information from one of the first communication device and the second communication device to the other one, calculating the authentication information with an encryption code in each of the first communication device and the second communication device, and evaluating a calculation result. During a processing series in the authentication process, the authentication unit performs a first authentication based on part of the calculation result transmitted between the first and second communication device, and a second authentication based on another part of the calculation result transmitted between the first and second communication device.
    Type: Application
    Filed: February 28, 2019
    Publication date: November 26, 2020
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Kazuki NAIKI, Hiroaki IWASHITA, Kenichi KOGA, Yoshiyuki OYA, Yoshiki OISHI
  • Publication number: 20190256047
    Abstract: An electronic key system determines that legitimate communication has been performed on the basis of conditions including that a measured distance from a ranging request unit to a ranging response unit measured on the basis of a ranging request signal and a ranging response signal is within a threshold range that is set on the basis of the distance from a communication area of a transmission antenna where an electronic key is determined to be located by a key location determination unit to one of either the ranging request unit or the ranging response unit that is provided in an on-board device.
    Type: Application
    Filed: October 25, 2017
    Publication date: August 22, 2019
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Hiroaki IWASHITA, Yoshiyuki OYA, Kazuki NAIKI
  • Patent number: 10302376
    Abstract: Provided is a corrosion resistant copper tube which can exhibit a further improved resistance to ant nest corrosion, and which is suitably usable as a heat transfer tube and refrigerant tube in air-conditioning equipment and refrigerating equipment. The copper tube is formed of a copper material comprising a copper alloy consisting of 0.15-0.50% by weight of phosphorus and the balance being copper and impurities, wherein the copper material includes phosphorus oxide particles, such that a number density of particles having a circle equivalent diameter of not less than 0.1 ?m among the phosphorus oxide particles is not more than 50000/mm2.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: May 28, 2019
    Assignees: UACJ CORPORATION, UACJ COPPER TUBE CORPORATION
    Inventors: Yoshihiko Kyo, Hirokazu Tamagawa, Yoshiyuki Oya
  • Publication number: 20190112691
    Abstract: Provided are: an Al—Mg—Si-based aluminum alloy material including an aluminum alloy including 0.10 to 1.50 mass % (hereinafter, “%”) Si and 0.10 to 2.00% of Mg, in which an oxide coating film mainly containing aluminum is formed on a surface of the aluminum alloy material, a Mg—Si-based crystallized product having an equivalent circle diameter of 0.1 to 5.0 ?m is contained at 100 to 150,000 particles/mm2, a Mg—Si-based crystallized product having an equivalent circle diameter of more than 5.0 ?m and 10.0 ?m or less is contained at 5 particles/mm2 or less, and the oxide coating film includes Si at a maximum concentration of 0.1 to 40.0% and Mg at a maximum concentration of 0.1 to 20.0%; a method for producing the aluminum alloy material; and an aluminum alloy clad material, in which the aluminum alloy material is clad on at least one surface of an aluminum core material.
    Type: Application
    Filed: April 4, 2017
    Publication date: April 18, 2019
    Applicant: UACJ Corporation
    Inventors: Takatoshi SHIMADA, Kazuko TERAYAMA, Yoshiyuki OYA
  • Publication number: 20190003018
    Abstract: An aluminum alloy-made connector capable of preventing corrosion in a desired region even when being caulking-jointed to a piping member, a piping member for connecting a heat exchanger including the connector, and methods for manufacturing these are provided. The aluminum alloy-made connector is configured by an aluminum alloy extrusion material containing 0.2% to 0.8% (mass %, the same shall apply hereinafter) of Si, 0.45% to 0.9% of Mg, xZn% of Zn, and 0.001% to 0.2% of Ti, with the balance being Al and inevitable impurities. Herein, xZn satisfies {(X2+2r2)1/2+34}/38?xZn?2.0 (when the piping member is made of an Al—Mg—Si based aluminum alloy) or {(X2+2r2)1/2+16}/24?xZn?2.0 (when the piping member is made of an Al—Mn based aluminum alloy). Provided that, in the formula, X is the distance (mm) from the caulking jointed connector to the length-direction end portion of the region requiring corrosion prevention, and r is the radius (mm) corresponding to the external diameter of the piping member.
    Type: Application
    Filed: June 12, 2018
    Publication date: January 3, 2019
    Inventors: Satoshi WAKAGURI, Yoshiyuki OYA, Takuya CHINO
  • Publication number: 20180313616
    Abstract: Provided is a corrosion resistant copper tube which can exhibit a further improved resistance to ant nest corrosion, and which is suitably usable as a heat transfer tube and refrigerant tube in air-conditioning equipment and refrigerating equipment. The copper tube is formed of a copper material comprising a copper alloy consisting of 0.15-0.50% by weight of phosphorus and the balance being copper and impurities, wherein the copper material includes phosphorus oxide particles, such that a number density of particles having a circle equivalent diameter of not less than 0.1 ?m among the phosphorus oxide particles is not more than 50000/mm2.
    Type: Application
    Filed: June 8, 2018
    Publication date: November 1, 2018
    Applicants: UACJ CORPORATION, UACJ COPPER TUBE CORPORATION
    Inventors: Yoshihiko KYO, Hirokazu TAMAGAWA, Yoshiyuki OYA
  • Patent number: 10099320
    Abstract: An aluminum alloy brazing sheet having high corrosion resistance is provided, which develops the sacrificial anticorrosion effect in both surfaces of the sheet, which has the brazing function in one of both the surfaces, and which prevents the occurrence of preferential corrosion. A channel forming component for a vehicular heat exchanger is also provided by utilizing the aluminum alloy brazing sheet. An aluminum alloy brazing sheet having high corrosion resistance includes an aluminum alloy core, a filler material clad on one surface of the core, and a sacrificial anode material clad on the other surface of the core, wherein the filler material, the sacrificial anode material, and the core have respective predetermined alloy compositions. A channel forming component for a vehicular heat exchanger is manufactured using the aluminum alloy brazing sheet having high corrosion resistance.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: October 16, 2018
    Assignees: Denso Corporation, UACJ Corporation
    Inventors: Sadayuki Kamiya, Shota Terachi, Kenji Negura, Makoto Ando, Atsushi Fukumoto, Yoshiyuki Oya, Akio Niikura
  • Patent number: 9999946
    Abstract: An aluminum alloy brazing sheet having a good brazing property that prevents diffusion of molten filler material in a core material of the aluminum alloy brazing sheet during a brazing process and which has a superior corrosion resistance to an exhaust gas condensate water after the brazing process is disclosed. A method of manufacturing of the aluminum alloy brazing sheet also is disclosed. A high corrosion-resistant heat exchanger that employs the aluminum alloy brazing sheet also is disclosed.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: June 19, 2018
    Assignee: UACJ Corporation
    Inventors: Sadayuki Kamiya, Masaki Harada, Masafumi Saito, Taketoshi Toyoma, Makoto Ando, Yoshiyuki Oya, Akio Niikura, Yoichi Kojima
  • Patent number: 9903008
    Abstract: Aluminum alloy material containing Si: 1.0 to 5.0 mass % and Fe: 0.01 to 2.0 mass % with balance being Al and inevitable impurities, wherein 250 pcs/mm2 or more to 7×105 pcs/mm2 or less of Si-based intermetallic compound particles having equivalent circle diameters of 0.5 to 5 ?m are present in a cross-section of the aluminum alloy material, while 100 pcs/mm2 or more to 7×105 pcs/mm2 or less of Al-based intermetallic compound particles having equivalent circle diameters of 0.5 to 5 ?m are present in a cross-section of the aluminum alloy material. An aluminum alloy structure is manufactured by bonding two or more members in vacuum or a non-oxidizing atmosphere at temperature at which a ratio of a mass of a liquid phase generated in the aluminum alloy material to a total mass of the aluminum alloy material is 5% or more and 35% or less.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: February 27, 2018
    Assignee: UACJ Corporation
    Inventors: Akio Niikura, Kazuko Fujita, Takashi Murase, Yoshiyuki Oya, Tomohito Kurosaki
  • Publication number: 20170137919
    Abstract: Aluminum alloy material containing Si: 1.0 to 5.0 mass % and Fe: 0.01 to 2.0 mass % with balance being Al and inevitable impurities, wherein 250 pcs/mm2 or more to 7×105 pcs/mm2 or less of Si-based intermetallic compound particles having equivalent circle diameters of 0.5 to 5 ?m are present in a cross-section of the aluminum alloy material, while 100 pcs/mm2 or more to 7×105 pcs/mm2 or less of Al-based intermetallic compound particles having equivalent circle diameters of 0.5 to 5 ?m are present in a cross-section of the aluminum alloy material. An aluminum alloy structure is manufactured by bonding two or more members in vacuum or a non-oxidizing atmosphere at temperature at which a ratio of a mass of a liquid phase generated in the aluminum alloy material to a total mass of the aluminum alloy material is 5% or more and 35% or less.
    Type: Application
    Filed: January 20, 2017
    Publication date: May 18, 2017
    Inventors: Akio NIIKURA, Kazuko FUJITA, Takashi MURASE, Yoshiyuki OYA, Tomohito KUROSAKI
  • Patent number: 9574253
    Abstract: An aluminum alloy material contains Si: 1.0 mass % to 5.0 mass % and Fe: 0.01 mass % to 2.0 mass % with balance being Al and inevitable impurities, wherein 250 pcs/mm2 or more to 7×105 pcs/mm2 or less of Si-based intermetallic compound particles having equivalent circle diameters of 0.5 to 5 ?m are present in a cross-section of the aluminum alloy material, while 100 pcs/mm2 to 7×105 pcs/mm2 of Al-based intermetallic compound particles having equivalent circle diameters of 0.5 to 5 ?m are present in a cross-section of the aluminum alloy material. An aluminum alloy structure is manufactured by bonding two or more members in vacuum or a non-oxidizing atmosphere at temperature at which a ratio of a mass of a liquid phase generated in the aluminum alloy material to a total mass of the aluminum alloy material is 5% or more and 35% or less.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: February 21, 2017
    Assignee: UACJ Corporation
    Inventors: Akio Niikura, Kazuko Fujita, Takashi Murase, Yoshiyuki Oya, Tomohito Kurosaki
  • Publication number: 20170045316
    Abstract: Provided are an aluminum cladding material having excellent corrosion resistance, a production method therefor, an aluminum cladding material for heat exchangers having excellent corrosion resistance, a production method therefor, an aluminum heat exchanger using said aluminum cladding material for heat exchangers, and a production method therefor. Said aluminum cladding material comprises an aluminum alloy core material and a sacrificial anode material layer clad on at least one surface thereof. The sacrificial anode material layer comprises an aluminum alloy containing 0.10 mass % or more and less than 1.50 mass % Si, 0.10 to 2.00 mass % Mg. Present therein is 100 to 150000 pieces/mm2 of Mg—Si-based crystallized product having a circle-equivalent diameter of 0.1 to 5.0 ?m, 7 pieces/mm2 or less of Mg—Si-based crystallized product having a circle-equivalent diameter of more than 5.0 ?m and 10.0 ?m or less in the sacrificial anode material layer.
    Type: Application
    Filed: April 21, 2015
    Publication date: February 16, 2017
    Applicant: UACJ Corporation
    Inventors: Kazuko TERAYAMA, Yoshiyuki OYA, Takatoshi SHIMADA