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:
Feb. 26, 2008
Filed:
Dec. 27, 2005
Applicants:
Osamu Yoshimoto, Nagoya, JP;
Yoshihiro Matsubara, Yokkaichi, JP;
Inventors:
Osamu Yoshimoto, Nagoya, JP;
Yoshihiro Matsubara, Yokkaichi, JP;
Assignee:
NGK Spark Plug Co., Ltd., Aichi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01T 13/39 (2006.01);
U.S. Cl.
CPC ...
Abstract
A spark plug including a noble metal tip bonded to at least one of a front-end portion of a center electrode and an end portion of the ground electrode opposing the center electrode. The noble metal tip contains from 5 to 40 wt % of Rh; from 1 to 20 wt % of at least one of Ir, Re and Ru; from 0.2 to 3 wt % of Ni; and 37 wt % or more of Pt.