Patents by Inventor Mutsumi MATSUOKA

Mutsumi MATSUOKA 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: 20240108774
    Abstract: An absorbent article 100 includes an absorber 10, the absorber 10 contains water-absorbent resin particle 10a composed of a deodorant composition, and the deodorant composition contains silver zeolite, a nitrogen-containing five-membered ring compound, and a water-absorbent resin.
    Type: Application
    Filed: October 14, 2020
    Publication date: April 4, 2024
    Inventors: Mutsumi MATSUOKA, Maoki HAMA
  • Patent number: 11931718
    Abstract: Water-absorbing resin particles have a repulsion rate of 5% or more according to the formula (h3?h2)/h1×100(%) when a cylinder with an inner diameter of 25.4 mm, which has a mesh-like bottom onto which 0.2 g of the water-absorbing resin particles are sprinkled, is placed in a container having ion exchange water in an amount of 30 times a mass of the water-absorbing resin particles, where h1 represents a free swelling height (mm) of the water-absorbing resin particles after 1 minute from initiation of water absorption, h2 represents a height (mm) of the water-absorbing resin particles after a load of 1.3×103 Pa is applied to the water-absorbing resin particles for 1 minute after 1 minute from initiation of the water absorption, and h3 represents a height (mm) of the water-absorbing resin particles after 1 minute from release of the load applied when measuring h2.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: March 19, 2024
    Assignee: SUMITOMO SEIKA CHEMICALS CO., LTD.
    Inventors: Takashi Ito, Miki Sakoda, Mutsumi Matsuoka
  • Publication number: 20230166237
    Abstract: The present invention provides a water absorbent resin composition which suppresses acetaldehyde odor, while being suppressed in coloring with time. A water absorbent resin composition which contains a hydrazide compound carrier and a water absorbent resin, wherein: the degree of yellowing is 10 or less if 2.0 g of this water absorbent resin composition is held at a temperature of 70° C. at a relative humidity of 90% for 7 days; and if 10.0 g of this water absorbent resin composition and 900 ml of a nitrogen gas having an acetaldehyde concentration of 20 ppm are sealed in a hermetically sealed bag having a volumetric capacity of 2 liters, the acetaldehyde concentration of the gas in the hermetically sealed hag measured after a lapse of one hour is 15 ppm or less.
    Type: Application
    Filed: April 23, 2021
    Publication date: June 1, 2023
    Inventor: Mutsumi MATSUOKA
  • Publication number: 20210022932
    Abstract: Disclosed is an absorbent article including an absorbent including water-absorbing resin particles, wherein the water-absorbing resin particles satisfy the following requirements (a), (b), and (c). (a) A release restoration rate represented by Formula (1) is 5% or more. (k2?k1)/k1×100(%) ??(1) (b) A water absorption rate measured by a vortex method is 5 seconds or less. (c) A retention capacity of physiological saline is 15 to 39 g/g.
    Type: Application
    Filed: March 27, 2019
    Publication date: January 28, 2021
    Inventors: Takashi ITO, Miki SAKODA, Mutsumi MATSUOKA
  • Publication number: 20210023530
    Abstract: Disclosed are water-absorbing resin particles having a repulsion rate represented by Formula (1) of 5% or more: (h3?h2)/h1×100 (%) ??(1) wherein in Formula (1), when a cylinder with an inner diameter of 25.4 mm, which has a mesh-like bottom onto which 0.2 g of the water-absorbing resin particles are sprinkled, is placed in a container having ion exchange water in an amount of 30 times a mass of the water-absorbing resin particles such that the water-absorbing resin particles absorb the ion exchange water, h1 represents a free swelling height (mm) of the water-absorbing resin particles after 1 minute from initiation of the water absorption, h2 represents a height (mm) of the water-absorbing resin particles after a load of 1.3×103 Pa is applied to the water-absorbing resin particles for 1 minute after 1 minute from initiation of the water absorption, and h3 represents a height (mm) of the water-absorbing resin particles after 1 minute from release of the load. applied when measuring h2.
    Type: Application
    Filed: March 27, 2019
    Publication date: January 28, 2021
    Inventors: Takashi ITO, Miki SAKODA, Mutsumi MATSUOKA