Patents by Inventor Shigeshi Fuchida

Shigeshi Fuchida 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).

  • Device for detecting contamination with photosynthesis inhibitor and method for detecting contamination with photosynthesis inhibitor
    Patent number: 12203859
    Abstract: The present invention provides a device (1) for detecting contamination with a photosynthesis inhibitor, the device including a collection device (10) configured to collect a test liquid, a light-blocking pretreatment tank (21) configured to store the test liquid (2) collected by the collection device in a state of containing phytoplankton, a stirring device configured to maintain a floating state of the phytoplankton in the test liquid stored in the pretreatment tank, an irradiation light source configured to irradiate the phytoplankton in the test liquid stored in the pretreatment tank with weak light having an underwater photon flux density that does not cause photoinhibition, a drainage conduit (40) configured to allow the test liquid discharged from the pretreatment tank to flow thereinto, and a fluorescence quantum efficiency measuring machine (50) provided for the drainage conduit and configured to measure a fluorescence quantum efficiency of the phytoplankton in the test liquid discharged from the pre
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: January 21, 2025
    Assignees: National Institute for Environmental Studies, Japan Agency for Marine-Earth Science and Technology
    Inventors: Hiroshi Koshikawa, Masanobu Kawachi, Shigeshi Fuchida, Shuhei Ota, Tetsuya Miwa, Yasuo Furushima, Shunsuke Kondo
  • DEVICE FOR DETECTING CONTAMINATION WITH PHOTOSYNTHESIS INHIBITOR AND METHOD FOR DETECTING CONTAMINATION WITH PHOTOSYNTHESIS INHIBITOR
    Publication number: 20220163450
    Abstract: The present invention provides a device (1) for detecting contamination with a photosynthesis inhibitor, the device including a collection device (10) configured to collect a test liquid, a light-blocking pretreatment tank (21) configured to store the test liquid (2) collected by the collection device in a state of containing phytoplankton, a stirring device configured to maintain a floating state of the phytoplankton in the test liquid stored in the pretreatment tank, an irradiation light source configured to irradiate the phytoplankton in the test liquid stored in the pretreatment tank with weak light having an underwater photon flux density that does not cause photoinhibition, a drainage conduit (40) configured to allow the test liquid discharged from the pretreatment tank to flow thereinto, and a fluorescence quantum efficiency measuring machine (50) provided for the drainage conduit and configured to measure a fluorescence quantum efficiency of the phytoplankton in the test liquid discharged from the pre
    Type: Application
    Filed: February 6, 2020
    Publication date: May 26, 2022
    Applicants: National Institute for Environmental Studies, Japan Agency for Marine-Earth Science and Technology
    Inventors: Hiroshi Koshikawa, Masanobu Kawachi, Shigeshi Fuchida, Shuhei Ota, Tetsuya Miwa, Yasuo Furushima, Shunsuke Kondo