Spark plug for internal combustion engine of motor vehicles

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9184570
APP PUB NO 20140049151A1
SERIAL NO

13969868

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Abstract

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A spark plug has a center electrode and an earth electrode. The center electrode is faced to the earth electrode so that a spark discharging gap is formed between the center electrode and the earth electrode. An electrode chip is formed on at least one of the center electrode and the earth electrode. The electrode chip has a composition containing 40 to 60 mol % of aluminum and iridium as a remainder thereof. In the composition of the electrode chip, it is possible to replace part of the iridium with 1 to 20 mol % of at least one metal selected from nickel, iron, cobalt, platinum and rhodium.

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Patent Owner(s)

Patent OwnerAddress
DENSO CORPORATIONKARIYA-CITY AICHI-PREF 448-8661
ISHIFUKU METAL INDUSTRY CO LTDCHIYODA-KU TOKYO 101-0047

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Abe, Nobuo Yokkaichi, JP 59 966
Doi, Yoshinori Soka, JP 13 113
Murayama, Yuki Toyoake, JP 43 191
Tomine, Toshiyuki Soka, JP 2 10
Yokota, Shunsuke Soka, JP 5 12

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