Patents by Inventor Chieko Toyooka

Chieko Toyooka 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).

  • Sweat-absorbent sheet and process for making the same
    Patent number: 7803146
    Abstract: A sweat-absorbent sheet includes a first surface layer, a second surface layer lying on the opposite side of the first surface layer and an intermediate layer sandwiched between these two layers. Each of the first and second surface layers comprises a mixture layer of first and second hydrophobic fibers made of thermoplastic synthetic resin as main constituent and first and second hydrophilic fibers. The intermediate layer comprises third hydrophilic fibers extending into at least one of the first and second hydrophobic fibers. The first and second hydrophobic fibers are bonded to the crimped to hydrophobic composite fibers mixed in the respective layers. The first, second and third hydrophilic fibers are impregnated with antibacterial or bactericidal medicinal ingredient and such medicinal ingredient is left behind on these hydrophilic fibers after these hydrophilic fibers have been dried.
    Type: Grant
    Filed: November 13, 2006
    Date of Patent: September 28, 2010
    Assignee: Uni-Charm Corporation
    Inventors: Mitsuhiro Wada, Akiko Tange, Kiyoshi Miyazawa, Chieko Toyooka
  • Sweat-Absorbent Sheet and Process for Making the Same
    Publication number: 20070149933
    Abstract: A sweat-absorbent sheet includes a first surface layer, a second surface layer lying on the opposite side of the first surface layer and an intermediate layer sandwiched between these two layers. Each of the first and second surface layers comprises a mixture layer of first and second hydrophobic fibers made of thermoplastic synthetic resin as main constituent and first and second hydrophilic fibers. The intermediate layer comprises third hydrophilic fibers extending into at least one of the first and second hydrophobic fibers. The first and second hydrophobic fibers are bonded to the crimped to hydrophobic composite fibers mixed in the respective layers. The first, second and third hydrophilic fibers are impregnated with antibacterial or bactericidal medicinal ingredient and such medicinal ingredient is left behind on these hydrophilic fibers after these hydrophilic fibers have been dried.
    Type: Application
    Filed: November 13, 2006
    Publication date: June 28, 2007
    Applicant: UNI-CHARM CORPORATION
    Inventors: Mitsuhiro Wada, Akiko Tange, Kiyoshi Miyazawa, Chieko Toyooka