Patents by Inventor Satoru Yui

Satoru Yui 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).

  • Water based ink capable of decolorizing or discoloring and a process for the production of the same
    Patent number: 6875798
    Abstract: There is provided a water based ink capable of decolorizing or discoloring written or printed letters or images through an organic solvent or heating, which is used for a writing instrument such as roller balls, makers, etc., printing inks, ink jets and the like. The water based ink comprises a colorant consisting of spherical fine grains colored by a color former, the spherical fine grains consisting of at least one member selected from polyolefins and other polymers containing, as a constitutional unit, at least one monomer selected from the group consisting of acrylonitrile, styrene, acrylic acid, methacrylic acid, methyl acrylate and methyl methacrylate.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: April 5, 2005
    Assignee: Zebra Co., Ltd.
    Inventors: Satoru Yui, Naoki Sakurai, Koichi Ito
  • Water based ink capable of decolorizing or discoloring and a process for the production of the same
    Publication number: 20020143080
    Abstract: There is provided a water based ink capable of decolorizing or discoloring written or printed letters or images through an organic solvent or heating, which is used for a writing instrument such as roller balls, markers, etc., printing inks, ink jets and the like.
    Type: Application
    Filed: October 23, 2001
    Publication date: October 3, 2002
    Applicant: ZEBRA CO., LTD
    Inventors: Satoru Yui, Naoki Sakurai, Koichi Ito