Patents by Inventor Hideyo YOSHIKAWA

Hideyo YOSHIKAWA 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).

  • Composite material for absorbent article, and method for manufacturing thereof
    Patent number: 9603756
    Abstract: A composite material for an absorbent article and a method for manufacturing said composite material, said composite material being obtained by causing an absorbent material to adhere by electrostatic interaction to a substrate material, the surface of the absorbent material being positively or negatively charged in a prescribed solvent selected from among a nonpolar organic solvent, a polar organic solvent, and a water/polar organic solvent mixture; and the surface of the composite material being charged to an electrical charge opposite to that of the surface of the substrate material, in the prescribed solvent. The substrate material has a fiber substrate or a plastic substrate, and a polyelectrolyte layer provided on the surface layer; and/or the absorbent material has an absorbent-particle substrate or an absorbent fiber substrate, and a polyelectrolyte layer provided on the surface layer.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: March 28, 2017
    Assignee: UNICHARM CORPORATION
    Inventors: Akihiro Kimura, Hiroyuki Muto, Norio Hakiri, Hideyo Yoshikawa, Atsunori Matsuda, Go Kawamura
  • COMPOSITE MATERIAL FOR ABSORBENT ARTICLE, AND METHOD FOR MANUFACTURING SAID MATERIAL
    Publication number: 20160287451
    Abstract: A composite material for an absorbent article and a method for manufacturing said composite material, said composite material being obtained by causing an absorbent material to adhere by electrostatic interaction to a substrate material, the surface of the absorbent material being positively or negatively charged in a prescribed solvent selected from among a nonpolar organic solvent, a polar organic solvent, and a water/polar organic solvent mixture; and the surface of the composite material being charged to an electrical charge opposite to that of the surface of the substrate material, in the prescribed solvent. The substrate material has a fiber substrate or a plastic substrate, and a polyelectrolyte layer provided on the surface layer; and/or the absorbent material has an absorbent-particle substrate or an absorbent fiber substrate, and a polyelectrolyte layer provided on the surface layer.
    Type: Application
    Filed: November 4, 2014
    Publication date: October 6, 2016
    Inventors: Akihiro KIMURA, Hiroyuki MUTO, Norio HAKIRI, Hideyo YOSHIKAWA, Atsunori MATSUDA, Go KAWAMURA