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:
Aug. 14, 2012
Filed:
Apr. 24, 2009
Applicants:
Makoto Kuribayashi, Aichi, JP;
Toshitaka Honda, Aichi, JP;
Keita Nakagawa, Aichi, JP;
Inventors:
Assignee:
NGK Spark Plug Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01T 13/05 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a technique of suppressing the generation of radio noise in a spark plug, wherein a high dielectric constant fixation-assisting member, formed of a high dielectric constant material which is higher in dielectric constant than alumina, is provided between a metallic shell and a second conductive portion CPwhich includes a metallic terminal of the spark plug