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:
Mar. 04, 2014
Filed:
Jan. 11, 2011
Tomoo Tanaka, Kitanagoya, JP;
Tsutomu Shibata, Owariasahi, JP;
Osamu Yoshimoto, Inazawa, JP;
Takaaki Kikai, Ama, JP;
Takehito Kuno, Nagoya, JP;
Kenji Nunome, Nagoya, JP;
Tomoo Tanaka, Kitanagoya, JP;
Tsutomu Shibata, Owariasahi, JP;
Osamu Yoshimoto, Inazawa, JP;
Takaaki Kikai, Ama, JP;
Takehito Kuno, Nagoya, JP;
Kenji Nunome, Nagoya, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Abstract
A spark plug including a center electrode and a ground electrode having a gap between the center electrode and the ground electrode, the ground electrode has an outer layer which is formed from an Ni-based alloy and a core portion which is covered by the outer layer and formed from a material having a thermal conductivity higher than that of the outer layer. Further, the melting point of the Ni-based alloy forming the outer layer is 1150° C. or more and 1350° C. or less.