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:
Jun. 12, 2012
Filed:
Mar. 31, 2011
Hiroyuki Kameda, Aichi-ken, JP;
Yoshikuni Sato, Nagoya, JP;
Daisuke Nakano, Kiyosu, JP;
Naofumi Yamamura, Nagoya, JP;
Daisuke Kasahara, Toyoake, JP;
Hiroyuki Kameda, Aichi-ken, JP;
Yoshikuni Sato, Nagoya, JP;
Daisuke Nakano, Kiyosu, JP;
Naofumi Yamamura, Nagoya, JP;
Daisuke Kasahara, Toyoake, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Abstract
A plasma jet ignition plug having high ignition performance and high durability. The plasma jet ignition plug comprises a center electrode wherein at least a front end portion including a front end surface of the center electrode contains an oxide of at least one of the rare earth elements in a total amount of 0.5% by mass to 10% by mass inclusive and tungsten (W) in an amount of 90% by mass or greater, or contains iridium (Ir) in an amount of 0.3% by mass to 3% by mass inclusive and W in an amount of 97% by mass or greater.