Patents by Inventor Kaiki TOKUMARU

Kaiki TOKUMARU 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).

  • Security Device and Authentication Device
    Publication number: 20180056702
    Abstract: A security device including a pair of transparent substrates having waveguides, wherein, in a waveguide of at least one of the pair of substrates there is disposed a luminescent material that emits light by simultaneously irradiating a first type light and a second type light having different wavelengths, and the first type light and the second type light are made incident on the respective waveguides in a state where the pair of substrates are overlapped with each other and the waveguides are in contact with each other, and thereby the contact part between the waveguides emits light.
    Type: Application
    Filed: August 10, 2017
    Publication date: March 1, 2018
    Inventors: Satoshi WATANABE, Kaiki TOKUMARU, Masashi KUNITAKE