Patents by Inventor Takanori Kiyokura

Takanori Kiyokura 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 switch device
    Patent number: 6912336
    Abstract: An optical switch device includes at least an optical switch element and driving control circuit. In the optical switch element, a fixed electrode portion is arranged, via a dielectric layer, on a semiconductor substrate on which an integrated circuit is formed. A mirror structure has a plate-shaped movable portion arranged above the fixed electrode portion while opposing the fixed electrode portion. A reflecting portion is formed at least at part of the movable portion to reflect light. A support member is fixed around the fixed electrode portion on the semiconductor substrate via a dielectric layer and supports the mirror structure. The driving control circuit is incorporated in the integrated circuit to drive the optical switch element by applying a predetermined potential to the movable portion and fixed electrode portion.
    Type: Grant
    Filed: March 11, 2003
    Date of Patent: June 28, 2005
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Hiromu Ishii, Yasuyuki Tanabe, Katsuyuki Machida, Masami Urano, Toshishige Shimamura, Yuji Uenishi, Takanori Kiyokura
  • Optical switch device
    Publication number: 20030174934
    Abstract: An optical switch device includes at least an optical switch element and driving control circuit. In the optical switch element, a fixed electrode portion is arranged, via a dielectric layer, on a semiconductor substrate on which an integrated circuit is formed. A mirror structure has a plate-shaped movable portion arranged above the fixed electrode portion while opposing the fixed electrode portion. A reflecting portion is formed at least at part of the movable portion to reflect light. A support member is fixed around the fixed electrode portion on the semiconductor substrate via a dielectric layer and supports the mirror structure. The driving control circuit is incorporated in the integrated circuit to drive the optical switch element by applying a predetermined potential to the movable portion and fixed electrode portion.
    Type: Application
    Filed: March 11, 2003
    Publication date: September 18, 2003
    Inventors: Hiromu Ishii, Yasuyuki Tanabe, Katsuyuki Machida, Masami Urano, Toshishige Shimamura, Yuji Uenishi, Takanori Kiyokura