Patents by Inventor Yuuji NISHIO

Yuuji NISHIO 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 fiber temperature distribution measuring device
    Patent number: 9952104
    Abstract: An optical fiber temperature distribution measuring device includes: an optical fiber as a sensor; a light source for outputting, to the optical fiber, signal light which has been amplified by excitation light; a temperature distribution calculation unit for measuring a temperature distribution along the optical fiber by using backward Raman scattered light from the optical fiber; an ASE light intensity variation measurement unit for measuring an intensity variation of an ASE light generated at the light source; and a temperature distribution correction unit for correcting the temperature distribution based on a measurement result of the ASE light intensity variation measurement unit.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: April 24, 2018
    Assignee: Yokogawa Electric Corporation
    Inventor: Yuuji Nishio
  • OPTICAL FIBER TEMPERATURE DISTRIBUTION MEASURING DEVICE
    Publication number: 20160018272
    Abstract: An optical fiber temperature distribution measuring device includes: an optical fiber as a sensor; a light source for outputting, to the optical fiber, signal light which has been amplified by excitation light; a temperature distribution calculation unit for measuring a temperature distribution along the optical fiber by using backward Raman scattered light from the optical fiber; an ASE light intensity variation measurement unit for measuring an intensity variation of an ASE light generated at the light source; and a temperature distribution correction unit for correcting the temperature distribution based on a measurement result of the ASE light intensity variation measurement unit.
    Type: Application
    Filed: July 9, 2015
    Publication date: January 21, 2016
    Applicant: YOKOGAWA ELECTRIC CORPORATION
    Inventor: Yuuji NISHIO