Patents by Inventor Tadashi Hosono

Tadashi Hosono 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).

  • Color filter and liquid crystal display device having the same
    Patent number: 6509125
    Abstract: A color filter includes a plurality of colored layers which are arranged adjacently to each other and have different spectroscopic properties. At least one colored layer contains a dye chemically bonded to a polymer chain.
    Type: Grant
    Filed: August 26, 1999
    Date of Patent: January 21, 2003
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Hiromitsu Ito, Hidesato Hagiwara, Tadashi Hosono, Mizuhiro Tani