Patents by Inventor Jungo KONDOU

Jungo KONDOU 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).

  • Publication number: 20190288473
    Abstract: An optical element includes an optical waveguide layer. The optical waveguide includes a periodic structure of grooves. The optical waveguide layer has a layer-thickness equal to or greater than 1.5 ?m and is made of material selected from a group consisting of Ta2O5, Al2O3, LiNbO3, LiTaO3, AlN, GaN, SiC, and Yttrium aluminum garnet (YAG). (D/0.5?)?2.5 is satisfied where D indicates the depth of groove; and ? indicates the pitch of the arranged grooves in the periodic structure. The unit of ? is identical to the unit of D.
    Type: Application
    Filed: May 31, 2019
    Publication date: September 19, 2019
    Applicant: NGK INSULATORS, LTD.
    Inventors: Kousuke NIWA, Jungo KONDOU, Shoichiro YAMAGUCHI, Keiichiro ASAI