Patents by Inventor Atushi Takita

Atushi Takita 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).

  • Exhaust gas analysis method and exhaust gas analysis apparatus
    Patent number: 8155890
    Abstract: An exhaust gas analysis method comprises applying a laser beam to the exhaust gas discharged from an internal combustion engine, receiving the laser beam that has passed through the exhaust gas, and measuring the concentration of any of the components contained in the exhaust gas based on the received laser beam. The exhaust gas analysis method further comprises detecting the absorption spectrum of the laser beam absorbed in the exhaust gas by using the received laser beam, calculating the concentration of the specific gas component by using the absorption spectrum, calculating the temperature of the exhaust gas by using the absorption spectrum, calculating the pressure of the exhaust gas by using the absorption spectrum, correcting the calculated concentration of the component contained in the exhaust gas by using the calculated temperature, correcting the concentration by using the calculated pressure, and outputting the true concentration value.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: April 10, 2012
    Assignees: Toyota Jidosha Kabushiki Kaisha, Mitsubishi Heavy Industries, Ltd.
    Inventors: Katsutoshi Goto, Masahiro Yamakage, Tomoyasu Iwase, Tokio Okano, Yoshihiro Deguchi, Masanobu Mizoguchi, Atushi Takita, Norihiro Fukuda
  • Exhaust Gas Analysis Method and Exhaust Gas Analysis Apparatus
    Publication number: 20090164138
    Abstract: An exhaust gas analysis method comprises applying a laser beam to the exhaust gas discharged from an internal combustion engine, receiving the laser beam that has passed through the exhaust gas, and measuring the concentration of any of the components contained in the exhaust gas based on the received laser beam. The exhaust gas analysis method further comprises detecting the absorption spectrum of the laser beam absorbed in the exhaust gas by using the received laser beam (S1), calculating the concentration of the specific gas component by using the absorption spectrum (S2), calculating the temperature of the exhaust gas by using the absorption spectrum (S3), calculating the pressure of the exhaust gas by using the absorption spectrum (S4 to S6), correcting the calculated concentration of the component contained in the exhaust gas by using the calculated temperature (S7), correcting the concentration by using the calculated pressure (S8), and outputting the true concentration value (S9).
    Type: Application
    Filed: December 15, 2006
    Publication date: June 25, 2009
    Inventors: Katsutoshi Goto, Masahiro Yamakage, Tomoyasu Iwase, Tokio Okano, Yoshihiro Deguchi, Masanobu Mizoguchi, Atushi Takita, Norihiro Fukuda