Patents by Inventor Aya OKOSHI

Aya OKOSHI 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).

  • Writing ink composition for aqueous ballpoint pen, ballpoint pen employing the same, and process for producing the writing ink composition for aqueous ballpoint pen
    Patent number: 10711147
    Abstract: The present invention provides an aqueous writing ink composition capable of forming handwriting having both opacity and transparency, also a writing implement using the composition, and further a process for producing the composition. The aqueous writing ink composition according to the present invention comprises a white pigment, resin particles containing styrene-acrylonitrile, a colorant, and a polysaccharide. The content of the white pigment X %, that of the resin particles Y1% and that of the polysaccharide Y2% satisfy the conditions of 0.1?X?7,??[1] 0.5<(Y1+Y2)/X, and??[2] 10?2.5X+(Y1+Y2)?40.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: July 14, 2020
    Assignee: KABUSHIKI KAISHA PILOT CORPORATION
    Inventors: Takashi Ohno, Aya Okoshi
  • WRITING INK COMPOSITION FOR AQUEOUS BALLPOINT PEN, BALLPOINT PEN EMPLOYING THE SAME, AND PROCESS FOR PRODUCING THE WRITING INK COMPOSITION FOR AQUEOUS BALLPOINT PEN
    Publication number: 20190367755
    Abstract: The present invention provides an aqueous writing ink composition capable of forming handwriting having both opacity and transparency, also a writing implement using the composition, and further a process for producing the composition. The aqueous writing ink composition according to the present invention comprises a white pigment, resin particles containing styrene-acrylonitrile, a colorant, and a polysaccharide. The content of the white pigment X %, that of the resin particles Y1% and that of the polysaccharide Y2% satisfy the conditions of 0.1?X?7,??[1] 0.5<(Y1+Y2)/X, and??[2] 10?2.5X+(Y1+Y2)?40.
    Type: Application
    Filed: May 24, 2019
    Publication date: December 5, 2019
    Applicant: KABUSHIKI KAISHA PILOT CORPORATION (also trading as PILOT CORPORATION)
    Inventors: Takashi OHNO, Aya OKOSHI