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:
Jan. 17, 2017
Filed:
Sep. 02, 2014
Applicant:
Ngk Spark Plug Co., Ltd., Nagoya-shi, Aichi, JP;
Inventors:
Assignee:
NGK SPARK PLUG CO., LTD., Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01T 13/20 (2006.01); H01T 13/39 (2006.01); H01T 13/32 (2006.01);
U.S. Cl.
CPC ...
H01T 13/39 (2013.01); H01T 13/32 (2013.01);
Abstract
A spark plug having a tip provided on at least one of a center electrode and a ground electrode. The spark plug includes a center electrode and a ground electrode disposed providing a gap with the center electrode. At least one of the center electrode and the ground electrode includes a tip forming the gap. The tip has a main constituent of Ir. The tip contains Rh of 7 mass % or more to 31 mass % or less, Ru of 5 mass % or more to 20 mass % or less, and Pt of one-twentieth or more to one-half or less of a Ru content.