Patents by Inventor Takumi Yoshii

Takumi Yoshii 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).

  • Water quality measuring method, water quality measuring device, and water quality measuring program for marine surface layers
    Patent number: 8843318
    Abstract: To measure salinity and water temperature in a marine surface layer using data obtained by a marine radar, a deviation ?S' between effect of an ocean wave on received power RSI0? in a reference time zone and effect of the ocean wave on received power RSIm? in a measurement time zone is estimated, a deviation ?s? between effect of the ocean wave on the received power RSI0? in the reference time zone and effect of the ocean wave on the received power in an electrical conductivity variable time zone is estimated, a regression function f(?) of a relationship between received power obtained by subtracting the deviation ?s? from the received power in the electrical conductivity variable time zone and electrical conductivity ? in the electrical conductivity variable time zone is estimated, and a value of electrical conductivity ?c in a measurement time zone is estimated, thereby calculating practical salinity.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: September 23, 2014
    Assignee: Central Research Institute of Electric Power Industry
    Inventor: Takumi Yoshii
  • WATER QUALITY MEASURING METHOD, WATER QUALITY MEASURING DEVICE, AND WATER QUALITY MEASURING PROGRAM FOR MARINE SURFACE LAYERS
    Publication number: 20120078516
    Abstract: In order to enable measurement of salinity and a water temperature in a marine surface layer using data obtained by a marine radar, a deviation ?S? between effect of an ocean wave on received power RSI0? in a reference time zone and effect of the ocean wave on received power RSIm? in a measurement time zone is estimated, a deviation ?s? between effect of the ocean wave on the received power RSI0? in the reference time zone and effect of the ocean wave on the received power in an electrical conductivity variable time zone is estimated, a regression function f(?) of a relationship between received power obtained by subtracting the deviation ?s? from the received power in the electrical conductivity variable time zone and electrical conductivity ? in the electrical conductivity variable time zone is estimated, and a value of electrical conductivity ?c in a measurement time zone is estimated using RSI0??RSIm?=?S?+{f(?0)?f(?c)} (where ?0: electrical conductivity in the reference time zone), thereby calculating pra
    Type: Application
    Filed: June 16, 2010
    Publication date: March 29, 2012
    Inventor: Takumi Yoshii