Patents by Inventor Naoaki Shindou

Naoaki Shindou 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 device, laminate and labeled article
    Patent number: 8054550
    Abstract: A special visual effect is achieved. An optical device includes a light-reflecting interface provided with a first relief structure including first recesses or protrusions arranged two-dimensionally, the first relief structure emitting a first diffracted light when illuminated with a light, and a light-transmitting interface disposed in front of the light-reflecting interface and having a reflectance smaller than that of the first interface, the light-transmitting interface being provided with a second relief structure including second recesses or protrusions arranged two-dimensionally, and the second relief structure emitting a second diffracted light when illuminated with the light.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: November 8, 2011
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Kazuhiro Yashiki, Naoaki Shindou, Noriyuki Itou, Hidetaka Ide, Naoki Minamikawa
  • Optical device, laminate and labeled article
    Publication number: 20100177391
    Abstract: A special visual effect is achieved. An optical device includes a light-reflecting interface provided with a first relief structure including first recesses or protrusions arranged two-dimensionally, the first relief structure emitting a first diffracted light when illuminated with a light, and a light-transmitting interface disposed in front of the light-reflecting interface and having a reflectance smaller than that of the first interface, the light-transmitting interface being provided with a second relief structure including second recesses or protrusions arranged two dimensionally, and the second relief structure emitting a second diffracted light when illuminated with the light.
    Type: Application
    Filed: March 18, 2010
    Publication date: July 15, 2010
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventors: Kazuhiro Yashiki, Naoaki Shindou, Noriyuki Itou, Hidetaka Ide, Naoki Minamikawa