Patents by Inventor Motohiro TOKUHASHI

Motohiro TOKUHASHI 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).

  • Oscillating device, oscillating element and electronic apparatus
    Patent number: 9013244
    Abstract: An oscillating device includes a temperature compensated oscillator that compensates a frequency temperature characteristic in a temperature compensation range including apart of a first temperature range, and a temperature control circuit that includes a heater and controls a temperature of a quartz crystal resonator of the temperature compensated oscillator into a second temperature range included in the temperature compensation range. Further, the temperature compensation range of the temperature compensated oscillator may include a part of the first temperature range in which compensation can be performed by first-order approximation.
    Type: Grant
    Filed: May 20, 2013
    Date of Patent: April 21, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Motohiro Tokuhashi
  • OSCILLATING DEVICE, OSCILLATING ELEMENT AND ELECTRONIC APPARATUS
    Publication number: 20130314169
    Abstract: An oscillating device includes a temperature compensated oscillator that compensates a frequency temperature characteristic in a temperature compensation range including apart of a first temperature range, and a temperature control circuit that includes a heater and controls a temperature of a quartz crystal resonator of the temperature compensated oscillator into a second temperature range included in the temperature compensation range. Further, the temperature compensation range of the temperature compensated oscillator may include a part of the first temperature range in which compensation can be performed by first-order approximation.
    Type: Application
    Filed: May 20, 2013
    Publication date: November 28, 2013
    Applicant: Seiko Epson Corporation
    Inventor: Motohiro TOKUHASHI