Patents by Inventor Takahide Kutsuma

Takahide Kutsuma 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: 6300277
    Abstract: A thermosensitive recording material including a coloring layer which is formed overlying a substrate and which includes a leuco dye and a color developer which can make the leuco dye color upon application of heat, wherein the thermosensitive recording material has a thermal property such that the coloring layer achieves a colored state having an image density (1) not less than about 1.20 when the coloring layer is heated with a thermal printhead upon application of a recording energy of 0.45 mJ/dot, and the coloring layer achieves a colored state having an image density (2) which is not less than about 0.1 lower than the image density (1) when the coloring layer is heated by being brought into contact with a heated block at a temperature of 150° C. for 1 second upon application of a pressure of 2 kg/cm2.
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: October 9, 2001
    Assignee: Ricoh Company Ltd.
    Inventors: Shinobu Miyauchi, Takahide Kutsuma