Patents by Inventor Kumi Oyama

Kumi Oyama 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: 20240074947
    Abstract: There is provided a nonwoven fabric for skin care products excellent in adhesion and wiping properties, and soft touch to the skin. The nonwoven fabric includes synthetic fibers and cellulose fibers. When a maximum length of a cross section of the synthetic fibers is denoted by A and a maximum width thereof is denoted by B, flatness expressed by the formula (1) is 1.0 to 1.5: flatness=A/B??(1) the synthetic fibers have recesses, a depth of which is 1.0% or more and 10.0% or less relative to a single fiber diameter of the synthetic fibers, a single fiber diameter of the synthetic fibers is 1 ?m or more and 20 ?m or less, a content of the synthetic fibers is 30 to 70% by mass relative to the entire nonwoven fabric for skin care products, a content of the cellulose fibers is 70 to 30% by mass relative to the entire nonwoven fabric for skin care products, and an average single fiber diameter of all fibers constituting the nonwoven fabric for skin care products is 5 ?m or more and 20 ?m or less.
    Type: Application
    Filed: December 16, 2021
    Publication date: March 7, 2024
    Applicant: Toray Industries, Inc.
    Inventors: Kumi Oyama, Taira Omori, Tomoko Takano
  • Publication number: 20220096707
    Abstract: A hemostatic material includes a lipid that can accelerate adhesion or aggregation of platelets even if the lipid does not carry a protein or a peptide involved in adhesion or aggregation of platelets such as GPIb and H12 and, to achieve the object, provides a hemostatic material including a water-insoluble base and a lipid supported on a surface of the base, wherein the lipid includes one or two or more anionic lipids.
    Type: Application
    Filed: October 17, 2019
    Publication date: March 31, 2022
    Applicant: Toray Industries, Inc.
    Inventors: Shinji Takeoka, Keiko Nakahara, Mamoru Nishiura, Shinya Otsubo, Hajimu Kurumatani, Toru Arakane, Masanobu Takeda, Makoto Nakahara, Kumi Oyama
  • Publication number: 20220040050
    Abstract: Provided is a nonwoven fabric for skin care products. The nonwoven fabric includes: a thermoplastic resin fiber having a single fiber diameter of 50 nm or more and 800 nm or less; and a cellulose fiber. A tensile strength of the cellulose fiber measured in accordance with JIS L 1015:2010 8.7.2 is 1.9 cN/dtex or less, a total content of the thermoplastic resin fiber and the cellulose fiber is 85% by mass or more relative to a total mass of the nonwoven fabric for skin care products, a content ratio by mass of the thermoplastic resin fiber and the cellulose fiber (thermoplastic resin fiber/cellulose fiber) is 0.23 to 1.50, and a density of the nonwoven fabric for skin care products is 0.08 g/cm3 to 0.16 g/cm3.
    Type: Application
    Filed: September 26, 2019
    Publication date: February 10, 2022
    Applicant: Toray Industries, Inc.
    Inventors: Kumi Oyama, Hiroshi Kajiyama, Makoto Nakahara
  • Patent number: 11225048
    Abstract: The present invention provides a laminated nonwoven fabric achieving both handling properties during manufacturing and use and adherence to a skin surface at a high level particularly when used for a face mask. The laminated nonwoven fabric includes a nonwoven fabric layer (A) and a nonwoven fabric layer (B). The nonwoven fabric layer (A) is formed from a fiber A having a single fiber diameter of 50 nm or more and 800 nm or less, and the nonwoven fabric layer (B) is formed from a fiber B having a single fiber diameter of 3 ?m or more and 30 ?m or less. The nonwoven fabric layer (B) includes 15 to 40% by mass of a fiber B1 to all of the fibers constituting the nonwoven fabric layer (B), the fiber having tensile strength of 2.0 cN/dtex or less as measured based on JIS L 1015: 2010 8.7.2. The nonwoven fabric layer (B) Includes a fiber B2 having tensile strength exceeding 2.0 cN/dtex as measured based on JIS L 1015: 2010 8.7.2.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: January 18, 2022
    Assignee: Toray Industries, Inc.
    Inventors: Kumi Oyama, Makoto Nakahara, Hiroshi Kajiyama
  • Publication number: 20200170382
    Abstract: Provided is a nonwoven fabric for skin care products. The nonwoven fabric includes: a thermoplastic resin fiber having a single fiber diameter of 50 nm or more and 800 nm or less; and a cellulose fiber having a tensile strength measured in accordance with JIS L 1015:2010 8.7.2 of 1.9 cN/dtex or less. A total content of the thermoplastic resin fiber and the cellulose fiber is 85% by mass or more relative to a total mass of the nonwoven fabric for skin care products, and a content ratio by mass of the thermoplastic resin fiber and the cellulose fiber (Thermoplastic resin fiber/Cellulose fiber) is 0.06 to 0.22.
    Type: Application
    Filed: June 20, 2018
    Publication date: June 4, 2020
    Applicant: Toray Industries, Inc.
    Inventors: Kumi Oyama, Hiroshi Kajiyama, Makoto Nakahara
  • Publication number: 20190375187
    Abstract: The present invention provides a laminated nonwoven fabric achieving both handling properties during manufacturing and use and adherence to a skin surface at a high level particularly when used for a face mask. The laminated nonwoven fabric includes a nonwoven fabric layer (A) and a nonwoven fabric layer (B). The nonwoven fabric layer (A) is formed from a fiber A having a single fiber diameter of 50 nm or more and 800 nm or less, and the nonwoven fabric layer (B) is formed from a fiber B having a single fiber diameter of 3 ?m or more and 30 ?m or less. The nonwoven fabric layer (B) includes 15 to 40% by mass of a fiber B1 to all of the fibers constituting the nonwoven fabric layer (B), the fiber having tensile strength of 2.0 cN/dtex or less as measured based on JIS L 1015: 2010 8.7.2. The nonwoven fabric layer (B) Includes a fiber B2 having tensile strength exceeding 2.0 cN/dtex as measured based on JIS L 1015: 2010 8.7.2.
    Type: Application
    Filed: February 21, 2018
    Publication date: December 12, 2019
    Applicant: Toray Industries, Inc.
    Inventors: Kumi Oyama, Makoto Nakahara, Hiroshi Kajiyama