Patents by Inventor Yoshifumi KAWADA

Yoshifumi KAWADA 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).

  • Submarine resource exploration system, transmission device, reception device, signal processing device, signal processing method, electrical exploration method, electromagnetic exploration method, and program
    Patent number: 11099291
    Abstract: A transmission device of a submarine resource exploration system includes a transmission unit which transmits a predetermined transmission artificial signal transmitted in order to perform exploration of submarine resources in water using water as a medium. A reception device includes a reception unit which receives a composite signal of a received artificial signal representing a signal propagated to the reception device using water as a medium in the transmission artificial signal, and a self-potential propagated to the reception device using water as a medium due to a potential anomaly generated due to submarine resources. A signal processing device includes a signal processing unit which separates the composite signal into the received artificial signal and the self-potential.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: August 24, 2021
    Assignee: Japan Agency for Marine-Earth Science and Technology & Nippon Marine Enterprises, Ltd.
    Inventors: Takafumi Kasaya, Tadanori Goto, Yoshifumi Kawada, Hisanori Iwamoto
  • Resource estimation system and resource estimation method
    Patent number: 10802173
    Abstract: Exploration of resources of the bottom of water such as a seafloor based on a self-potential is accurately performed. A computer of a resource estimation system includes an estimation information acquisition unit that acquires potential information indicating potentials of a plurality of potential electrodes having a predetermined positional relationship measured at a plurality of positions in water, a noise removal unit that removes noise contained in the measured potentials by performing principal component analysis or independent component analysis using the potentials, and a resource estimation unit that estimates the presence of the resources in the bottom of water based on the potential from which the noise has been removed.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: October 13, 2020
    Assignee: Japan Agency for Marine-Earth Science and Technology
    Inventors: Takafumi Kasaya, Yoshifumi Kawada, Tadanori Goto
  • SUBMARINE RESOURCE EXPLORATION SYSTEM, TRANSMISSION DEVICE, RECEPTION DEVICE, SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD, ELECTRICAL EXPLORATION METHOD, ELECTROMAGNETIC EXPLORATION METHOD, AND PROGRAM
    Publication number: 20190204465
    Abstract: A transmission device of a submarine resource exploration system includes a transmission unit which transmits a predetermined transmission artificial signal transmitted in order to perform exploration of submarine resources in water using water as a medium. A reception device includes a reception unit which receives a composite signal of a received artificial signal representing a signal propagated to the reception device using water as a medium in the transmission artificial signal, and a self-potential propagated to the reception device using water as a medium due to a potential anomaly generated due to submarine resources. A signal processing device includes a signal processing unit which separates the composite signal into the received artificial signal and the self-potential.
    Type: Application
    Filed: August 25, 2017
    Publication date: July 4, 2019
    Applicants: Japan Agency for Marine-Earth Science and Technology, Nippon Marine Enterprises, Ltd.
    Inventors: Takafumi KASAYA, Tadanori GOTO, Yoshifumi KAWADA, Hisanori IWAMOTO
  • RESOURCE ESTIMATION SYSTEM AND RESOURCE ESTIMATION METHOD
    Publication number: 20180210106
    Abstract: Exploration of resources of the bottom of water such as a seafloor based on a self-potential is accurately performed. A computer of a resource estimation system includes an estimation information acquisition unit that acquires potential information indicating potentials of a plurality of potential electrodes having a predetermined positional relationship measured at a plurality of positions in water, a noise removal unit that removes noise contained in the measured potentials by performing principal component analysis or independent component analysis using the potentials, and a resource estimation unit that estimates the presence of the resources in the bottom of water based on the potential from which the noise has been removed.
    Type: Application
    Filed: October 27, 2016
    Publication date: July 26, 2018
    Applicant: Japan Agency for Marine-Earth Science and Technology
    Inventors: Takafumi KASAYA, Yoshifumi KAWADA, Tadanori GOTO