Patents by Inventor Yuji Ol

Yuji Ol 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).

  • Publication number: 20210396702
    Abstract: A gas sensor control device having a DA conversion circuit configured to supply a pump current having a magnitude corresponding to an inputted digital signal to the pump cell, a reference electric potential generating circuit configured to keep an electric potential of the first pump electrode at a reference electric potential, a diagnostic resistance connected to the pump cell parallel to the pump cell, and an output part configured to output a signal relating to voltage applied to the diagnostic resistance when inputting an arbitrary digital signal to the DA conversion circuit in a situation in which oxygen ion conductivity does not occur in the pump cell to an external device.
    Type: Application
    Filed: March 9, 2020
    Publication date: December 23, 2021
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Yuzo HIGUCHI, Koji ISHIBASHI, Junichiro MITSUNO, Satoru ABE, Yuji Ol