Patents by Inventor Tomoichiro OKAMOTO

Tomoichiro OKAMOTO 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).

  • OXYGEN SENSOR ELEMENT
    Publication number: 20210041409
    Abstract: An oxygen sensor element made of a ceramic sintered body detects oxygen concentration based on an electric current value measured when a voltage is applied. The ceramic sintered body has a composition formula LnBa2-xSrxCu3O7-? generated by substituting any element selected from group 2 elements in the periodic table, such as strontium (Sr), for a part of a composition formula LnBa2Cu3O7-? (Ln denotes rare earth element and ? is 0 to 1). Sr substitution quantity x should satisfy an inequality constraint 0<x?1.5. This allows provision of an oxygen sensor element that improves durability etc. without losing sensor characteristics.
    Type: Application
    Filed: January 30, 2019
    Publication date: February 11, 2021
    Inventors: Tomoichiro OKAMOTO, Kenichi IGUCHI, Ken TAKAHASHI, Tetsuro TANAKA, Chika ITO