Patents by Inventor Hiroko TOYAMA

Hiroko TOYAMA 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: 11987032
    Abstract: A resin sheet having hair-like bodies arranged regularly on at least one surface of a base layer containing a thermoplastic resin, the surface with the hair-like bodies having a coefficient of friction, as measured according to KES, of 0.5 or more and 1.0 or less, a deviation of the coefficient of friction, as measured by KES, of 0.010 or more and 0.025 or less, and a deviation of roughness, as measured by KES, of 0.2 or more and 1.5 or less.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: May 21, 2024
    Assignee: DENKA COMPANY LIMITED
    Inventors: Hiroko Toyama, Keishi Maeda
  • Patent number: 11872790
    Abstract: A resin sheet having hair-like bodies arranged regularly on at least one surface of a base layer containing a thermoplastic resin, the surface with the hair-like bodies having a coefficient of friction, as measured according to KES, of 0.5 or more and 1.0 or less, a deviation of the coefficient of friction, as measured by KES, of 0.010 or more and 0.025 or less, and a deviation of roughness, as measured by KES, of 0.2 or more and 1.5 or less.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: January 16, 2024
    Assignee: DENKA COMPANY LIMITED
    Inventors: Hiroko Toyama, Keishi Maeda
  • Publication number: 20230347635
    Abstract: [Problem] The purpose of the present invention is to provide a resin sheet which has good tactile sensation and can be secondarily molded on a member surface having a complicated shape, and a molded article thereof. [Solution] Configuring a resin sheet having: a base layer having hair-like bodies arranged regularly on one surface thereof; and a substrate layer on the surface opposite the hair-like bodies of the base layer, wherein a thickness (a) of the substrate layer is 10 ?m or greater and 250 ?m or less, the thickness (a) of the substrate layer and a thickness (b) of the base layer satisfy a?b, the substrate layer comprises a polycarbonate-based resin and/or a styrene-based resin, and the base layer and the hair-like bodies comprise a thermoplastic polyurethane resin.
    Type: Application
    Filed: July 7, 2021
    Publication date: November 2, 2023
    Applicant: DENKA COMPANY LIMITED
    Inventors: Keishi MAEDA, Hiroko TOYAMA
  • Publication number: 20230041295
    Abstract: A resin sheet having: a surface layer having hair-like bodies arranged regularly on one surface thereof; and a second layer directly laminated to a surface opposite that of the hair-like bodies of the surface layer, the surface layer comprising a thermoplastic polyurethane resin and the second layer comprising a polymer alloy resin of a polycarbonate-based resin and a polyester-based and resin.
    Type: Application
    Filed: January 12, 2021
    Publication date: February 9, 2023
    Applicant: DENKA COMPANY LIMITED
    Inventors: Hiroko TOYAMA, Keishi MAEDA
  • Publication number: 20220184917
    Abstract: A resin sheet having hair-like bodies arranged regularly on at least one surface of a base layer containing a thermoplastic resin, the surface with the hair-like bodies having a coefficient of friction, as measured according to KES, of 0.5 or more and 1.0 or less, a deviation of the coefficient of friction, as measured by KES, of 0.010 or more and 0.025 or less, and a deviation of roughness, as measured by KES, of 0.2 or more and 1.5 or less.
    Type: Application
    Filed: March 25, 2020
    Publication date: June 16, 2022
    Applicant: DENKA COMPANY LIMITED
    Inventors: Hiroko TOYAMA, Keishi MAEDA
  • Publication number: 20220024173
    Abstract: A thermoplastic resin sheet having hair-like bodies expressing good tactile sensation and surface quality, and a molded article thereof. The thermoplastic resin sheet is arranged regularly on at least one surface of a base layer, a continuous phase being formed without a structural boundary between the base layer and the hair-like bodies, wherein the hair-like bodies have an average height of 30 ?m or more and 500 ?m or less, the surface having the hair-like bodies has an L* value of 20 or less in an L*a*b* color system based on color difference measurement (JIS Z 8729), and the surface having the hairlike bodies has a 60-degree specular gloss (JIS Z 8741) of 1.5% or less.
    Type: Application
    Filed: November 13, 2019
    Publication date: January 27, 2022
    Applicant: DENKA COMPANY LIMITED
    Inventors: Keishi MAEDA, Hiroko TOYAMA
  • Patent number: 11104100
    Abstract: [Problem] The objective of the present invention is to provide a resin sheet that has a favorable tactile sensation and no less than a certain light transmittance and a molded article thereof. [Solution] A resin sheet that has hair-like bodies arranged regularly on at least one surface of an underlayer and in which a continuous phase is formed without any structural boundary between the underlayer and the hair-like bodies, wherein the average height of the hair-like bodies is no less than 30 ?m and no greater than 500 ?m, the total light transmittance of the resin sheet measured in accordance with JIS K 7136-1 is no less than 0.1% and no greater than 20%, and the contrast ratio of the resin sheet measured in accordance with JIS K 5600 4-1 is no less than 70% and no greater than 98%.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: August 31, 2021
    Assignee: DENKA COMPANY LIMITED
    Inventors: Keishi Maeda, Hiroko Toyama
  • Publication number: 20210245470
    Abstract: [Problem] The objective of the present invention is to provide a resin sheet that has a favorable tactile sensation and no less than a certain light transmittance and a molded article thereof. [Solution] A resin sheet that has hair-like bodies arranged regularly on at least one surface of an underlayer and in which a continuous phase is formed without any structural boundary between the underlayer and the hair-like bodies, wherein the average height of the hair-like bodies is no less than 30 ?m and no greater than 500 ?m, the total light transmittance of the resin sheet measured in accordance with JIS K 7136-1 is no less than 0.1% and no greater than 20%, and the contrast ratio of the resin sheet measured in accordance with JIS K 5600 4-1 is no less than 70% and no greater than 98%.
    Type: Application
    Filed: December 3, 2019
    Publication date: August 12, 2021
    Inventors: Keishi MAEDA, Hiroko TOYAMA