Patents by Inventor Keitaro SUGIHARA

Keitaro SUGIHARA 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).

  • OPTICAL ELEMENT FOR FORGERY PROOF
    Publication number: 20170334232
    Abstract: There is provided a versatile optical element applicable both to an electrode layer required in a bank bill field and to an optical element required in an ID field. In an optical element (1) according to one embodiment of the present invention, a first layer (2) is arranged on a second layer (3) having a relief structure on a surface thereof, and a first region (4) and a second region (5) are provided.
    Type: Application
    Filed: November 10, 2015
    Publication date: November 23, 2017
    Inventors: Kazuhiro YASHIKI, Akira NAGANO, Keitaro SUGIHARA, Tomoko TASHIRO