Patents by Inventor Xin zen Li

Xin zen Li 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).

  • Apparatus for measuring a characteristic of an object using an optical fiber and light pulses
    Patent number: 6237421
    Abstract: A light intensity measurement unit can sample the light intensity of scattered light at time intervals of a certain length corresponding to two times the length of each of small equal length sections, into which a measurement area in an optical fiber is divided. A computation unit can then compute the strain and/or temperature of each of the small sections of the measurement area in the optical fiber, based on the light intensity of the scattered light measured by the light intensity measurement unit from the scattering gain coefficient of the scattered light associated with each of the small sections.
    Type: Grant
    Filed: June 17, 1999
    Date of Patent: May 29, 2001
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Xin zen Li, Shiro Takada, Masayuki Miyazaki