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. 07, 2014
Filed:
Mar. 25, 2010
Applicants:
Katsutoshi Nakayama, Aichi, JP;
Nobuaki Sakayanagi, Aichi, JP;
Inventors:
Katsutoshi Nakayama, Aichi, JP;
Nobuaki Sakayanagi, Aichi, JP;
Assignee:
NGK Spark Plug Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01T 13/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for improving welding strength between a ground electrode and a noble metal tip on a spark plug. A fusion zone is formed along at least a portion of the boundary between the ground electrode and the noble metal tip through fusion of a portion of the ground electrode and a portion of the noble metal tip.