Patents by Inventor Shoutarou HIRATA

Shoutarou HIRATA 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 waveguide device
    Patent number: 11378828
    Abstract: An optical waveguide device including a rib-type optical waveguide 2 formed of a material having an electro-optic effect, and a reinforcing substrate 1 that supports the rib-type optical waveguide, one end of the rib-type optical waveguide 2 has a tapered portion 20, structures 4 are provided that are disposed apart from the tapered portion so as to sandwich the tapered portion and are disposed on the reinforcing substrate 1, an upper substrate is disposed above the tapered portion and the structures, and an adhesive layer is disposed in a space sandwiched between the upper substrate and the structures.
    Type: Grant
    Filed: March 19, 2021
    Date of Patent: July 5, 2022
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Shingo Takano, Yu Kataoka, Shoutarou Hirata
  • OPTICAL WAVEGUIDE DEVICE
    Publication number: 20210302764
    Abstract: An optical waveguide device including a rib-type optical waveguide 2 formed of a material having an electro-optic effect, and a reinforcing substrate 1 that supports the rib-type optical waveguide, one end of the rib-type optical waveguide 2 has a tapered portion 20, structures 4 are provided that are disposed apart from the tapered portion so as to sandwich the tapered portion and are disposed on the reinforcing substrate 1, an upper substrate is disposed above the tapered portion and the structures, and an adhesive layer is disposed in a space sandwiched between the upper substrate and the structures.
    Type: Application
    Filed: March 19, 2021
    Publication date: September 30, 2021
    Applicant: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Shingo TAKANO, Yu KATAOKA, Shoutarou HIRATA