Patents by Inventor So Ichikawa

So Ichikawa 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).

  • Vibrator element, sensor device, sensor, and electronic apparatus
    Patent number: 8198948
    Abstract: A vibrator element includes: a base part; and a vibrating arm extended from the base part in a first direction, the vibrating arm including a first region, a second region, and a third region sequentially arranged from the base part side in the first direction, the first region to the third region including first electrodes and second electrodes that generate electric fields in second directions perpendicular to the first direction in a plan view and are electrically independent from each other, wherein electric field directions of the first region and the third region and an electric field direction of the second region are opposite to each other, and the vibrating arm is expanded and contracted in the first direction by the electric fields in the second directions, and the vibrating arm is vibrated in third directions as directions perpendicular to the respective first direction and second directions.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: June 12, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Ryuta Nishizawa, So Ichikawa
  • VIBRATOR ELEMENT, SENSOR DEVICE, SENSOR, AND ELECTRONIC APPARATUS
    Publication number: 20110227657
    Abstract: A vibrator element includes: a base part; and a vibrating arm extended from the base part in a first direction, the vibrating arm including a first region, a second region, and a third region sequentially arranged from the base part side in the first direction, the first region to the third region including first electrodes and second electrodes that generate electric fields in second directions perpendicular to the first direction in a plan view and are electrically independent from each other, wherein electric field directions of the first region and the third region and an electric field direction of the second region are opposite to each other, and the vibrating arm is expanded and contracted in the first direction by the electric fields in the second directions, and the vibrating arm is vibrated in third directions as directions perpendicular to the respective first direction and second directions.
    Type: Application
    Filed: March 9, 2011
    Publication date: September 22, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Ryuta NISHIZAWA, So ICHIKAWA