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:
Jul. 10, 2012
Filed:
Sep. 21, 2007
Dae Yeol Ohm, Seoul, KR;
Nack J. Kim, Pohang, KR;
Jun Ho Bae, Gyeongsangbuk-do, KR;
Seok Ki Song, Daejeon, KR;
Hyun Joong Kim, Cheongju, KR;
Jong Hyun Im, Chungcheongbuk-do, KR;
Dae Yeol Ohm, Seoul, KR;
Nack J. Kim, Pohang, KR;
Jun Ho Bae, Gyeongsangbuk-do, KR;
Seok Ki Song, Daejeon, KR;
Hyun Joong Kim, Cheongju, KR;
Jong Hyun Im, Chungcheongbuk-do, KR;
Yura Tech Co., Ltd., , KR;
Abstract
Provided is an ignition plug used for an internal-combustion engine. The ignition plug includes: a center electrode; an insulator disposed outside the center electrode; a metal housing disposed outside the insulator; a ground electrode having an end connected to the metal housing and the other end facing the center electrode; and an electrode tip fixed to one or more of the center electrode and the ground electrode. The electrode tip is made of an alloy of iridium Ir, hafnium Hf, and niobium Nb. Therefore, the ignition plug with the low-cost iridium can have high resistance to prevent an iridium element from oxidizing and vaporizing in high speed driving conditions.