Patents by Inventor Tatsuya Ezaki

Tatsuya Ezaki 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).

  • Patent number: 11913871
    Abstract: A physical property evaluation method is the method for evaluating physical properties of a film-shaped measurement target object by means of an electrochemical method, the method including the step of causing an electrolytic solution to contact a front surface of the measurement target object. The speed of penetration of the electrolytic solution into the measurement target object is adjusted in such a manner that the levels of the front-side temperature and the back-side temperature of the measurement target object and a difference between the front-side temperature and the back-side temperature of the measurement target object are adjusted.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: February 27, 2024
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Teruaki Asada, Tatsuya Ezaki, Tsutomu Shigenaga, Akihide Takami
  • Patent number: 11860081
    Abstract: A corrosion resistance test method for a coated metal material that includes a metal base and a surface treatment film, includes the steps of: disposing one or more water-containing material holders each holding a water-containing material to be in contact with the surface treatment film and one or more electrodes to be in contact with the water-containing material, and electrically connecting, with an external circuit, between the one electrode and the metal base, or between the electrodes; and supplying a current between the one electrode and the metal base, or between at least one of the electrodes and at least one of the other electrodes, as an anode and a cathode, to bring corrosion of the coated metal material to progress. The water-containing material comprises water, an electrolyte material, and kaolinite, and comprises the kaolinite at 36.0 mass % or more to 45.0 mass % or less.
    Type: Grant
    Filed: September 21, 2021
    Date of Patent: January 2, 2024
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Teruaki Asada, Katsunobu Sasaki, Tatsuya Ezaki, Tsutomu Shigenaga, Akihide Takami
  • Patent number: 11802828
    Abstract: A corrosion resistance test method for a coated metal material that includes a metal base and a surface treatment film, includes the steps of: disposing one or more water-containing material holders each holding a water-containing material to be in contact with the surface treatment film and one or more electrodes to be in contact with the water-containing material, and electrically connecting, with an external circuit, between the one electrode and the metal base, or between the electrodes; and supplying a current between the one electrode and the metal base, or between at least one of the electrodes and at least one of the other electrodes, as an anode and a cathode, to bring corrosion of the coated metal material to progress. The water-containing material has a viscosity at 65° C. of 10 mPa·s or more to 40 mPa·s or less.
    Type: Grant
    Filed: September 21, 2021
    Date of Patent: October 31, 2023
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Teruaki Asada, Katsunobu Sasaki, Tatsuya Ezaki, Tsutomu Shigenaga, Akihide Takami
  • Publication number: 20230108997
    Abstract: A corrosion-resistance testing method for a coated metal member formed of a metallic substrate provided with a surface treatment coating includes an electrification step for applying a voltage and/or a current between a surface of the surface treatment coating and the metallic substrate in a state where a corrosion factor is in contact with the surface of the surface treatment coating so as to measure a temporal change in a current and/or a voltage occurring between the surface of the surface treatment coating and the metallic substrate, and an evaluation step for evaluating a defect occurrence status of the surface treatment coating based on a waveform of the temporal change.
    Type: Application
    Filed: September 14, 2022
    Publication date: April 6, 2023
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Teruaki ASADA, Katsunobu SASAKI, Tatsuya EZAKI, Tsutomu SHIGENAGA, Akihide TAKAMI
  • Publication number: 20230108474
    Abstract: A corrosion-resistance testing method for a coated metal member formed of a metallic substrate provided with a surface treatment coating includes an electrification step for applying a voltage and/or a current between a surface of the surface treatment coating and the metallic substrate while a corrosion factor is in contact with the surface of the surface treatment coating so as to measure a temporal change in a current and/or a voltage occurring between the surface of the surface treatment coating and the metallic substrate, and an evaluation step for evaluating a coating quality of the surface treatment coating based on at least one of a gradient of the temporal change when a value of the current and/or the voltage exceeds a predetermined value, an integrated value of the value of the current and/or the voltage within a predetermined time range, and a time average value of the integrated value.
    Type: Application
    Filed: September 14, 2022
    Publication date: April 6, 2023
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Teruaki ASADA, Katsunobu SASAKI, Tatsuya EZAKI, Tsutomu SHIGENAGA, Akihide TAKAMI
  • Publication number: 20220099557
    Abstract: A corrosion resistance test method for a coated metal material that includes a metal base and a surface treatment film, includes the steps of: disposing one or more water-containing material holders each holding a water-containing material to be in contact with the surface treatment film and one or more electrodes to be in contact with the water-containing material, and electrically connecting, with an external circuit, between the one electrode and the metal base, or between the electrodes; and supplying a current between the one electrode and the metal base, or between at least one of the electrodes and at least one of the other electrodes, as an anode and a cathode, to bring corrosion of the coated metal material to progress. The water-containing material has a viscosity at 65° C. of 10 mPa·s or more to 40 mPa·s or less.
    Type: Application
    Filed: September 21, 2021
    Publication date: March 31, 2022
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Teruaki ASADA, Katsunobu SASAKI, Tatsuya EZAKI, Tsutomu SHIGENAGA, Akihide TAKAMI
  • Publication number: 20220099556
    Abstract: A corrosion resistance test method for a coated metal material that includes a metal base and a surface treatment film, includes the steps of: disposing one or more water-containing material holders each holding a water-containing material to be in contact with the surface treatment film and one or more electrodes to be in contact with the water-containing material, and electrically connecting, with an external circuit, between the one electrode and the metal base, or between the electrodes; and supplying a current between the one electrode and the metal base, or between at least one of the electrodes and at least one of the other electrodes, as an anode and a cathode, to bring corrosion of the coated metal material to progress. The water-containing material comprises water, an electrolyte material, and kaolinite, and comprises the kaolinite at 36.0 mass % or more to 45.0 mass % or less.
    Type: Application
    Filed: September 21, 2021
    Publication date: March 31, 2022
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Teruaki ASADA, Katsunobu SASAKI, Tatsuya EZAKI, Tsutomu SHIGENAGA, Akihide TAKAMI
  • Publication number: 20200386667
    Abstract: A physical property evaluation method is the method for evaluating physical properties of a film-shaped measurement target object by means of an electrochemical method, the method including the step of causing an electrolytic solution to contact a front surface of the measurement target object. The speed of penetration of the electrolytic solution into the measurement target object is adjusted in such a manner that the levels of the front-side temperature and the back-side temperature of the measurement target object and a difference between the front-side temperature and the back-side temperature of the measurement target object are adjusted.
    Type: Application
    Filed: March 6, 2020
    Publication date: December 10, 2020
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Teruaki ASADA, Tatsuya EZAKI, Tsutomu SHIGENAGA, Akihide TAKAMI
  • Patent number: 5639927
    Abstract: A process of producing cycloolefin, comprises the step of subjecting a monocyclic aromatic hydrocarbon to partial hydrogenation reaction in the presence of water and a ternary catalyst containing (a) ruthenium, (b) zinc and (c) at least one selected from the group consisting of gold, silver and copper.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: June 17, 1997
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Toshiyuki Suzuki, Tatsuya Ezaki