Patents by Inventor Tomoyuki Ishiyama

Tomoyuki Ishiyama 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: 11965286
    Abstract: A synthetic resin skin material and a manufacturing method thereof, the synthetic resin skin material including, in this order: a base fabric; a thermoplastic resin layer having a storage elastic modulus at 160° C. of 2,000,000 Pa or less measured in accordance with JIS K 7244 (1998); and a skin layer containing a urethane resin, wherein the synthetic resin skin material has recesses at a side of the skin layer, the recesses having a depth, in a thickness direction of the synthetic resin skin material, that extends from the skin layer as far as an inner part of the thermoplastic resin layer, past a boundary that is present between the skin layer and the thermoplastic resin layer at a non-recessed region.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: April 23, 2024
    Assignee: KYOWA LEATHER CLOTH CO., LTD.
    Inventors: Tomohisa Sakashita, Tomoyuki Ishiyama, Mayu Ohba, Kento Terai, Akinaka Fukumi
  • Patent number: 11577487
    Abstract: A synthetic resin skin material composite, including: a urethane resin skin material including a urethane resin skin layer provided at one surface of a substrate; and a cushion layer that is placed at a surface on an opposite side of the substrate from the surface of the urethane resin skin material at which the urethane resin skin layer is provided; in which the urethane resin skin material has recesses at a side of the urethane resin skin layer, and each of the recesses has a depth in a thickness direction of the synthetic resin skin material composite, such that the recesses extend from the urethane resin skin layer into the cushion layer beyond an interface between the urethane resin skin material and the cushion layer that is present in a region without a recess, as well as a method of producing a synthetic resin skin material composite.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: February 14, 2023
    Assignees: KYOWA LEATHER CLOTH CO., LTD., HAYASHI TELEMPU CORPORATION, INOAC CORPORATION
    Inventors: Tomoyuki Ishiyama, Kenji Kubo, Tetsuya Ogawa, Atsuhiko Itakura
  • Publication number: 20220186428
    Abstract: A synthetic resin skin material and a manufacturing method thereof, the synthetic resin skin material including, in this order: a base fabric; a thermoplastic resin layer having a storage elastic modulus at 160° C. of 2,000,000 Pa or less measured in accordance with JIS K 7244 (1998); and a skin layer containing a urethane resin, wherein the synthetic resin skin material has recesses at a side of the skin layer, the recesses having a depth, in a thickness direction of the synthetic resin skin material, that extends from the skin layer as far as an inner part of the thermoplastic resin layer, past a boundary that is present between the skin layer and the thermoplastic resin layer at a non-recessed region.
    Type: Application
    Filed: May 28, 2020
    Publication date: June 16, 2022
    Applicant: KYOWA LEATHER CLOTH CO., LTD.
    Inventors: Tomohisa SAKASHITA, Tomoyuki ISHIYAMA, Mayu OHBA, Kento TERAI, Akinaka FUKUMI
  • Publication number: 20210162705
    Abstract: A synthetic resin skin material composite, including: a urethane resin skin material including a urethane resin skin layer provided at one surface of a substrate; and a cushion layer that is placed at a surface on an opposite side of the substrate from the surface of the urethane resin skin material at which the urethane resin skin layer is provided; in which the urethane resin skin material has recesses at a side of the urethane resin skin layer, and each of the recesses has a depth in a thickness direction of the synthetic resin skin material composite, such that the recesses extend from the urethane resin skin layer into the cushion layer beyond an interface between the urethane resin skin material and the cushion layer that is present in a region without a recess, as well as a method of producing a synthetic resin skin material composite.
    Type: Application
    Filed: September 26, 2018
    Publication date: June 3, 2021
    Applicants: KYOWA LEATHER CLOTH CO., LTD., HAYASHI TELEMPU CORPORATION, INOAC CORPORATION
    Inventors: Tomoyuki ISHIYAMA, Kenji KUBO, Tetsuya OGAWA, Atsuhiko ITAKURA
  • Patent number: 8801956
    Abstract: A hexagonal crystal ferrite magnetic powder having high magnetic characteristics while having a small particle volume and a high specific surface area is provided, and a high-density magnetic recording medium using the powder. A method for producing a hexagonal crystal ferrite formed using a glass crystallization method includes the steps of: mixing a glass matrix with raw materials including iron, bismuth, a divalent metal (M1), a tetravalent metal (M2), any one kind (A) of barium, strontium, calcium, and lead, and at least one kind of rare earth element (represented by R) having a mole equal to or less than that of the iron; heating the mixed raw material to obtain a glass body; quenching the glass body, pulverizing the glass body, and performing a heat treatment, and washing the glass body after the heat treatment with an acid solution.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: August 12, 2014
    Assignee: Dowa Electronics Materials Co., Ltd.
    Inventors: Kenji Masada, Tomoyuki Ishiyama, Gousuke Iwasaki
  • Publication number: 20130004787
    Abstract: There is provided a steel pipe for steam injection having high yield stress even at 350° C. The seamless steel pipe for steam injection according to the present invention has a chemical composition comprising, by mass percent, C: 0.03 to 0.08%, Si: 0.05 to 0.5%, Mn: 1.5 to 3.0%, Mo: more than 0.4 to 1.2%, Al: 0.005 to 0.100%, Ca: 0.001 to 0.005%, N: 0.002 to 0.015%, P: at most 0.03%, S: at most 0.01%, and Cu: at most 1.5%, the balance being Fe and impurities. The seamless steel pipe is manufactured by being water cooled after hot working and by being quenched and tempered.
    Type: Application
    Filed: September 12, 2012
    Publication date: January 3, 2013
    Applicant: SUMITOMO METAL INDUSTRIES, LTD.
    Inventors: Tomoyuki ISHIYAMA, Yuji Arai
  • Publication number: 20120199782
    Abstract: A hexagonal crystal ferrite magnetic powder having high magnetic characteristics while having a small particle volume and a high specific surface area is provided, and a high-density magnetic recording medium using the powder. A method for producing a hexagonal crystal ferrite formed using a glass crystallization method includes the steps of: mixing a glass matrix with raw materials including iron, bismuth, a divalent metal (M1), a tetravalent metal (M2), any one kind (A) of barium, strontium, calcium, and lead, and at least one kind of rare earth element (represented by R) having a mole equal to or less than that of the iron; heating the mixed raw material to obtain a glass body; quenching the glass body, pulverizing the glass body, and performing a heat treatment, and washing the glass body after the heat treatment with an acid solution.
    Type: Application
    Filed: January 29, 2010
    Publication date: August 9, 2012
    Applicant: DOWA ELECTRONICS MATERIALS CO., LTD.
    Inventors: Kenji Masada, Tomoyuki Ishiyama, Gousuke Iwasaki
  • Patent number: 8215947
    Abstract: A molding die includes a fixed die, a movable die movable toward and away from the fixed die, a first slide core slidable in sliding engagement with the fixed die, and a second slide core having a presser for pressing the first slide core when the second slide core is held in pressing contact with the first slide core. The fixed die, the movable die, the first slide core, and the second slide core jointly define a cavity for molding a product. The presser includes a reactive force plate for producing reactive forces against the pressure of a molten material introduced into the cavity.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: July 10, 2012
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takashi Kato, Kazuhisa Fujiwara, Takuya Eto, Takashi Nagata, Tomoyuki Ishiyama
  • Publication number: 20100303948
    Abstract: A molding die includes a fixed die, a movable die movable toward and away from the fixed die, a first slide core slidable in sliding engagement with the fixed die, and a second slide core having a presser for pressing the first slide core when the second slide core is held in pressing contact with the first slide core. The fixed die, the movable die, the first slide core, and the second slide core jointly define a cavity for molding a product. The presser includes a reactive force plate for producing reactive forces against the pressure of a molten material introduced into the cavity.
    Type: Application
    Filed: May 24, 2010
    Publication date: December 2, 2010
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Takashi KATO, Kazuhisa Fujiwara, Takuya Eto, Takashi Nagata, Tomoyuki Ishiyama