Patents by Inventor Yoshinori Doi

Yoshinori Doi 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: 12114572
    Abstract: A compound containing Sn, Te and Mn, and further containing either one or both of Sb and Bi.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: October 8, 2024
    Assignees: SUMITOMO CHEMICAL COMPANY, LIMITED, RIKEN
    Inventors: Atsunori Doi, Satoshi Shimano, Yasujiro Taguchi, Yoshinori Tokura
  • Patent number: 12107096
    Abstract: An imaging device includes a photoelectric conversion layer, a counter electrode provided above the photoelectric conversion layer, a pixel electrode that faces the counter electrode with the photoelectric conversion layer disposed between the counter electrode and the pixel electrode, and a contact plug covered with the pixel electrode and connected to the pixel electrode. The pixel electrode includes a first layer and a second layer provided on the first layer in contact with the first layer. A surface of the first layer that is in contact with the second layer has a protrusion that protrudes upward.
    Type: Grant
    Filed: April 16, 2021
    Date of Patent: October 1, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Morikazu Tsuno, Takanori Doi, Yoshinori Takami
  • Patent number: 11773473
    Abstract: Provided is an Ir alloy which is excellent in high temperature strength while ensuring oxidation wear resistance at high temperature. The Ir alloy consists of: 7 mass % or more, and less than 10 mass % of Rh; 0.5 mass % to 5 mass % of Ta; 0 mass % to 5 mass % of at least one kind of element selected from among Co, Cr, and Ni; and Ir as the balance, wherein a total content of the Ta and the at least one kind of element selected from among Co, Cr, and Ni is 5 mass % or less.
    Type: Grant
    Filed: August 26, 2021
    Date of Patent: October 3, 2023
    Assignees: ISHIFUKU METAL INDUSTRY CO., LTD., DENSO CORPORATION
    Inventors: Shunsuke Yokota, Yoshinori Doi, Ryohei Akiyoshi, Ken Hanashi
  • Publication number: 20220282358
    Abstract: Provided is an Ir alloy which is excellent in high temperature strength while ensuring oxidation wear resistance at high temperature. The Ir alloy consists of: 7 mass % or more, and less than 10 mass % of Rh; 0.5 mass % to 5 mass % of Ta; 0 mass % to 5 mass % of at least one kind of element selected from among Co, Cr, and Ni; and Ir as the balance, wherein a total content of the Ta and the at least one kind of element selected from among Co, Cr, and Ni is 5 mass % or less.
    Type: Application
    Filed: August 26, 2021
    Publication date: September 8, 2022
    Applicants: ISHIFUKU METAL INDUSTRY CO., LTD., DENSO CORPORATION
    Inventors: Shunsuke YOKOTA, Yoshinori DOI, Ryohei AKIYOSHI, Ken HANASHI
  • Patent number: 11131008
    Abstract: An Ir alloy is excellent in high temperature strength while ensuring oxidation wear resistance at high temperature. The heat-resistant Ir alloy includes: 5 mass % to 30 mass % of Rh; 0.3 mass % to 5 mass % of an element group A made of at least one kind of element selected from among Ta and Re; and 0 mass % to 5 mass % of an element group B made of at least one kind of element selected from among Co, Cr, and Ni, wherein the heat-resistant Ir alloy includes 5 mass % or less of the element group A and the element group B in total, and wherein, when the at least one kind of element in the element group A includes Re, the at least one kind of element in the element group B is Co alone, Cr alone, or two or more kinds selected from Co, Cr, and Ni.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: September 28, 2021
    Assignees: ISHIFUKU METAL INDUSTRY CO., LTD., DENSO CORPORATION
    Inventors: Shunsuke Yokota, Yoshinori Doi, Ryohei Akiyoshi, Ken Hanashi
  • Patent number: 10937265
    Abstract: A coin-roll handling device includes a coin-roll characteristic-value detecting unit 50 configured to detect at least one of a first characteristic value relating to a diameter of a roll of coins being transported by a transporting unit 40 and a second characteristic value relating to a material of the roll of coins being transported by the transporting unit 40, provided downstream of a storage unit 10 in a transportation direction of the roll of coins by the transporting unit 40 and a denomination determining unit 92 configured to determine a denomination of the roll of coins based on at least one of the first characteristic value relating to the diameter of the roll of coins and the second characteristic value relating to the material of the roll of coins detected by the coin-roll characteristic-value detecting unit 50.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: March 2, 2021
    Assignee: GLORY LTD.
    Inventors: Yasushi Yokota, Hitoshi Ueno, Youhei Kamada, Mitsunori Yokota, Yoshinori Doi
  • Publication number: 20200199713
    Abstract: A method for producing a platinum group metal or a platinum group-based alloy according to the present invention includes a preparing step of weighing a raw material that is partially or entirely of powder, a molding step of molding and solidifying the prepared raw material to obtain molded bodies, a sintering step of sintering the molded bodies to obtain a sintered body, a melting step of melting the sintered body to produce a molten ingot, and a deformation processing step of processing the molten ingot. In the sintering step, the molded bodies are sintered in a stacked state to produce a sintered body as a joined body.
    Type: Application
    Filed: March 4, 2020
    Publication date: June 25, 2020
    Inventors: Yoshinori DOI, Yasunori EGAWA, Daisuke KON
  • Publication number: 20190338395
    Abstract: An Ir alloy is excellent in high temperature strength while ensuring oxidation wear resistance at high temperature. The heat-resistant Ir alloy includes: 5 mass % to 30 mass % of Rh; 0.3 mass % to 5 mass % of an element group A made of at least one kind of element selected from among Ta and Re; and 0 mass % to 5 mass % of an element group B made of at least one kind of element selected from among Co, Cr, and Ni, wherein the heat-resistant Ir alloy includes 5 mass % or less of the element group A and the element group B in total, and wherein, when the at least one kind of element in the element group A includes Re, the at least one kind of element in the element group B is Co alone, Cr alone, or two or more kinds selected from Co, Cr, and Ni.
    Type: Application
    Filed: December 20, 2017
    Publication date: November 7, 2019
    Applicants: ISHIFUKU METAL INDUSTRY CO., LTD., DENSO CORPORATION
    Inventors: Shunsuke YOKOTA, Yoshinori DOI, Ryohei AKIYOSHI, Ken HANASHI
  • Publication number: 20190184453
    Abstract: An object of the present invention is to provide a molten ingot of a platinum group metal or a platinum group-based alloy having a high material yield by suppressing a scattering phenomenon during heating and melting in a method for producing a platinum group metal or a platinum group-based alloy. The method for producing a platinum group metal or a platinum group-based alloy according to the present invention includes a preparing step of weighing a raw material that is partially or entirely of powder and, when the alloy is to be produced, mixing the weighed raw material to obtain a powder mixture, a molding step of molding and solidifying the prepared raw material to obtain molded bodies, a sintering step of sintering the molded bodies to obtain a sintered body, a melting step of melting the sintered body to produce a molten ingot, and a deformation processing step of processing the molten ingot.
    Type: Application
    Filed: February 21, 2019
    Publication date: June 20, 2019
    Inventors: Yoshinori DOI, Yasunori EGAWA, Daisuke KON
  • Publication number: 20180159304
    Abstract: A pipe material used as a discharge electrode of a spark plug for an internal combustion engine comprises an outer layer made of a Ni-based alloy, an inner layer made of a Pt-based alloy provided inside the outer layer, and an intermediate layer provided between the outer layer and the inner layer.
    Type: Application
    Filed: December 1, 2017
    Publication date: June 7, 2018
    Inventors: Masayuki TAMURA, Yuji KAJI, Yoshinori DOI, Shinya TANAKA, Atsushi YOSHIDA
  • Publication number: 20180025568
    Abstract: A coin-roll handling device includes a coin-roll characteristic-value detecting unit 50 configured to detect at least one of a first characteristic value relating to a diameter of a roll of coins being transported by a transporting unit 40 and a second characteristic value relating to a material of the roll of coins being transported by the transporting unit 40, provided downstream of a storage unit 10 in a transportation direction of the roll of coins by the transporting unit 40 and a denomination determining unit 92 configured to determine a denomination of the roll of coins based on at least one of the first characteristic value relating to the diameter of the roll of coins and the second characteristic value relating to the material of the roll of coins detected by the coin-roll characteristic-value detecting unit 50.
    Type: Application
    Filed: January 4, 2016
    Publication date: January 25, 2018
    Inventors: Yasushi YOKOTA, Hitoshi UENO, Youhei KAMADA, Mitsunori YOKOTA, Yoshinori DOI
  • Patent number: 9737931
    Abstract: Provided is a method for producing a platinum group-based alloy capable of producing a sound molten ingot of a platinum group-based alloy in a large amount.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: August 22, 2017
    Assignee: ISHIFUKU METAL INDUSTRY CO., LTD.
    Inventors: Yoshinori Doi, Daisuke Kon
  • Publication number: 20170043392
    Abstract: An object of the present invention is to provide a molten ingot of a platinum group metal or a platinum group-based alloy having a high material yield by suppressing a scattering phenomenon during heating and melting in a method for producing a platinum group metal or a platinum group-based alloy. The method for producing a platinum group metal or a platinum group-based alloy according to the present invention includes a preparing step of weighing a raw material that is partially or entirely of powder and, when the alloy is to be produced, mixing the weighed raw material to obtain a powder mixture, a molding step of molding and solidifying the prepared raw material to obtain molded bodies, a sintering step of sintering the molded bodies to obtain a sintered body, a melting step of melting the sintered body to produce a molten ingot, and a deformation processing step of processing the molten ingot.
    Type: Application
    Filed: June 23, 2015
    Publication date: February 16, 2017
    Inventors: Yoshinori DOI, Yasunori EGAWA, Daisuke KON
  • Publication number: 20170043393
    Abstract: Provided is a method for producing a platinum group-based alloy capable of producing a sound molten ingot of a platinum group-based alloy in a large amount.
    Type: Application
    Filed: March 27, 2015
    Publication date: February 16, 2017
    Inventors: Yoshinori DOI, Daisuke KON
  • Patent number: 9184570
    Abstract: A spark plug has a center electrode and an earth electrode. The center electrode is faced to the earth electrode so that a spark discharging gap is formed between the center electrode and the earth electrode. An electrode chip is formed on at least one of the center electrode and the earth electrode. The electrode chip has a composition containing 40 to 60 mol % of aluminum and iridium as a remainder thereof. In the composition of the electrode chip, it is possible to replace part of the iridium with 1 to 20 mol % of at least one metal selected from nickel, iron, cobalt, platinum and rhodium.
    Type: Grant
    Filed: August 19, 2013
    Date of Patent: November 10, 2015
    Assignees: DENSO CORPORATION, ISHIFUKU METAL INDUSTRY CO., LTD.
    Inventors: Yuki Murayama, Nobuo Abe, Yoshinori Doi, Toshiyuki Tomine, Shunsuke Yokota
  • Patent number: 9077158
    Abstract: A spark plug for use in an internal combustion engine has a center electrode, an earth electrode, and an electrode chip formed on at least one of the center electrode and the earth electrode. A spark discharge gap is formed between the center electrode and the earth electrode. The electrode chip has a base section, a chromium rich layer formed on at least a part of the base section, and a diffusion layer formed between the base section and the chromium rich layer. The base section contains chromium within a range of 5 to 45 mass %, an element X within a range of 0.5 to 25 mass %, and a remainder composed of tungsten and unavoidable impurity. The chromium rich layer is larger in content of chromium than the base section. The element X contained in the base section is comprised of at least one of molybdenum, silicon, aluminum and lead.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: July 7, 2015
    Assignees: DENSO CORPORATION, ISHIFUKU METAL INDUSTRY CO., LTD.
    Inventors: Yuki Murayama, Nobuo Abe, Yoshinori Doi, Toshiyuki Tomine
  • Publication number: 20140091701
    Abstract: A spark plug for use in an internal combustion engine has a center electrode, an earth electrode, and an electrode chip formed on at least one of the center electrode and the earth electrode. A spark discharge gap is formed between the center electrode and the earth electrode. The electrode chip has a base section, a chromium rich layer formed on at least a part of the base section, and a diffusion layer formed between the base section and the chromium rich layer. The base section contains chromium within a range of 5 to 45 mass %, an element X within a range of 0.5 to 25 mass %, and a remainder composed of tungsten and unavoidable impurity. The chromium rich layer is larger in content of chromium than the base section. The element X contained in the base section is comprised of at least one of molybdenum, silicon, aluminum and lead.
    Type: Application
    Filed: September 30, 2013
    Publication date: April 3, 2014
    Applicants: ISHIFUKU Metal Industry Co., Ltd., Denso Corporation
    Inventors: Yuki MURAYAMA, Nobuo ABE, Yoshinori DOI, Toshiyuki TOMINE
  • Publication number: 20140049151
    Abstract: A spark plug has a center electrode and an earth electrode. The center electrode is faced to the earth electrode so that a spark discharging gap is formed between the center electrode and the earth electrode. An electrode chip is formed on at least one of the center electrode and the earth electrode. The electrode chip has a composition comprised of 40 to 60 mol % of aluminum and iridium as a remainder thereof. In the composition of the electrode chip, it is possible to replace part of the iridium with 1 to 20 mol % of at least one metal selected from nickel, iron, cobalt, platinum and rhodium.
    Type: Application
    Filed: August 19, 2013
    Publication date: February 20, 2014
    Applicants: ISHIFUKU METAL INDUSTRY CO., LTD., DENSO CORPORATION
    Inventors: Yuki MURAYAMA, Nobuo ABE, Yoshinori DOI, Toshiyuki TOMINE, Shunsuke YOKOTA
  • Patent number: 6707750
    Abstract: A plurality of memory cells connected with word lines in a row direction and connected with bit lines in a column direction are disposed in a matrix of rows and columns, and addresses are assigned to the memory cells to consecutively increase the address in the row direction in each row. The memory cells are positioned in a plurality of memory cell blocks respectively corresponding to a group of columns. A first specific word line is selected in one memory cell block or more of a high address side, and a second specific word line corresponding to an address group, which is higher than that of the first specific word line and is nearest to that of the first specific word line among those of the word lines, is selected in the remaining memory cell block or more of a low address side.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: March 16, 2004
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Yoshinori Doi
  • Publication number: 20030202416
    Abstract: A plurality of memory cells connected with word lines in a row direction and connected with bit lines in a column direction are disposed in a matrix of rows and columns, and addresses are assigned to the memory cells to consecutively increase the address in the row direction in each row. The memory cells are positioned in a plurality of memory cell blocks respectively corresponding to a group of columns. A first specific word line is selected in one memory cell block or more of a high address side, and a second specific word line corresponding to an address group, which is higher than that of the first specific word line and is nearest to that of the first specific word line among those of the word lines, is selected in the remaining memory cell block or more of a low address side.
    Type: Application
    Filed: October 16, 2002
    Publication date: October 30, 2003
    Inventor: Yoshinori Doi