Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kuniharu Tanaka0
Katsuya Takaoka0
Kazuhiro Kurosawa0
Toshitaka Honda0
Haruki Yoshida0
Hirokazu Kurono0
Hironori Uegaki0
Hisashi Kozuka0
Date of Patent
October 2, 2018
0Patent Application Number
153155810
Date Filed
June 2, 2015
0Patent Citations Received
Patent Primary Examiner
Patent abstract
Disclosed is a spark plug capable of suppressing high-frequency noise by improving the material of an electrical connection part between a center electrode and a metal terminal within an axial hole of an insulator. A spark plug has an electrical connection part arranged in an axial hole of an insulator to establish electrical connection between a center electrode and a metal terminal. The electrical connection part includes a conductor having a first crystal phase formed of a Fe-containing oxide and a second crystal phase formed of a conductive metal oxide of perovskite crystal structure.
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