The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 20, 2025
Filed:
Feb. 02, 2021
Applicant:
Ngk Spark Plug Co., Ltd., Nagoya, JP;
Inventors:
Assignee:
NGK SPARK PLUG CO., LTD., Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 5/04 (2006.01); H01T 13/39 (2006.01);
U.S. Cl.
CPC ...
H01T 13/39 (2013.01); C22C 5/04 (2013.01);
Abstract
A noble metal tip for a spark plug according to the present invention contains iridium (Ir) in an amount of 50 mass % or more and aluminum (Al) in an amount of 0.1 mass % or more and 5 mass % or less, and further contains rhodium (Rh), wherein a metallographic structure comprised of fiber-like elements R is observed, and the fiber-like elements R of the metallographic structure have an average aspect ratio of 150 or more and have an average length of 25 μm or less in a minor axis direction.