Patents by Inventor Daisuke Shiba

Daisuke Shiba 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: 5126201
    Abstract: An absorbent article using, as a surface material (or a liquid-permeable top sheet), a nonwoven fabric is disclosed, the nonwoven fabric containing at least 10% by weight of a conjugate fiber comprising first and second parts differing from each other, wherein the second part covers at least a part of the first part, at least the first part contains an inorganic component in a proportion higher than that contained in the second part, and the content of the inorganic component in the first part is at least 1.5% by weight based on the weight of the first part. The nonwoven fabric has excellent cutting properties while retaining satisfactory strength, absorbency and touch.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: June 30, 1992
    Assignee: Kao Corporation
    Inventors: Daisuke Shiba, Norihiro Abe, Takatoshi Kobayashi
  • Patent number: 5078710
    Abstract: A sanitary article comprises an absorbent and a sheet of a surface material to envelop the absorbent, the sheet comprising an opaque, hydrophobic film, having recesses in its land portion, the recesses being formed to have a bottom and side walls, the side walls having a slanting part, the slanting part being provided therein with an opening so that the slanting part having the opening may not be covered with the land portion.
    Type: Grant
    Filed: March 16, 1990
    Date of Patent: January 7, 1992
    Assignee: Kao Corporation
    Inventors: Yasunori Suda, Takatoshi Kobayashi, Akira Yamanoi, Tamio Yasuno, Daisuke Shiba
  • Patent number: 4851284
    Abstract: An absorbent article comprises a non-woven fabric comprising on a surface area thereof conjugate fibers comprising a first resin and a second resin having a melt flow rate of 10 to 50, the first resin having a higher melting point by at least 100.degree. C. than the second.
    Type: Grant
    Filed: May 22, 1987
    Date of Patent: July 25, 1989
    Assignee: Kao Corporation
    Inventors: Akira Yamanoi, Daisuke Shiba
  • Patent number: 4804378
    Abstract: An absorbing article comprises a surface layer to be in contact with skins containing from 60 to 100% by weight of first fibers having a hydrophilic surface and a hydrophobic inside and from 40 to 0% by weight of second fibers which are hydrophilic at least at their surface, and a rearface constituted at least with one or more layers containing from 0 to 50% by weight of said first fibers and from 100 to 50% by weight of said second fibers, in which the surface hydrophilic property, after being wetted, is higher in said second fibers than in said first fibers.
    Type: Grant
    Filed: April 24, 1987
    Date of Patent: February 14, 1989
    Assignee: KAO Corporation
    Inventors: Daisuke Shiba, Akira Sakurai, Iwao Miyashita
  • Patent number: 4755179
    Abstract: An absorbent article comprises a non-woven fabric sheet to come in contact with the skin of a user and an absorbent layer provided under said non-woven fabric sheet, said non-woven fabric sheet comprising polyester oligomer fibers having a hydrophilic group at least on the surface side to come into contact with the skin of a user so that said surface gets hydrophilic.
    Type: Grant
    Filed: July 18, 1986
    Date of Patent: July 5, 1988
    Assignee: Kao Corporation
    Inventors: Daisuke Shiba, Akira Sakurai
  • Patent number: 4652484
    Abstract: An absorbent article such as a sanitary napkin and a diaper is improved in the surface material by use of a non-woven fabric of hot-melt fibers which melts at 90.degree. to 140.degree. C. It is disposable.
    Type: Grant
    Filed: July 18, 1985
    Date of Patent: March 24, 1987
    Assignee: Kao Corporation
    Inventors: Daisuke Shiba, Iwao Miyashita, Osamu Ito