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:
Oct. 09, 2007
Filed:
Mar. 22, 2004
Kenji Nunome, Nagoya, JP;
Osamu Yoshimoto, Nagoya, JP;
Wataru Matsutani, Nagoya, JP;
Yoshihiro Matsubara, Nagoya, JP;
Kenji Nunome, Nagoya, JP;
Osamu Yoshimoto, Nagoya, JP;
Wataru Matsutani, Nagoya, JP;
Yoshihiro Matsubara, Nagoya, JP;
NGK Spark Plug Co., Ltd., Nagoya, JP;
Abstract
An object of the invention is to provide a higher-durability spark plug provided with a center electrode and a side electrode. At least one of the center electrode and the side electrode includes a precious metal member facing a spark discharge gap between the electrodes. A sweating phenomenon of the precious metal member can be suppressed while spark abrasion, oxidation abrasion and abnormal abrasion of the precious metal member are suppressed. The precious metal member contains Ir as a main component, and smaller amounts of Rh, Ru, and Ni.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile