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Kenichi Kumagai

NGK

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Publication

Featured researches published by Kenichi Kumagai.

Archive | 2002

Spark plug and manufacturing method of the same

Kenichi Kumagai; Yoshihisa Sugiyama; Tomoharu Suzuki; 芳久 杉山; 健一 熊谷; 知治 鈴木

Archive | 2002

Spark plug and method of producing spark plug

Yoshihisa Sugiyama; Tomoharu Suzuki; Kenichi Kumagai

Archive | 2003

Spark plug for use in internal combustion engine

Satoko Ito; Kenji Kobayashi; Kenichi Kumagai; Wataru Matsutani; Yoshihiro Matsubara

Archive | 2005

Spark plug with high durability

Kenichi Kumagai; Wataru Matsutani; Kenji Kobayashi

Archive | 2003

SPARKING PLUG AND MANUFACTURING METHOD THEREOF

Kenji Kobayashi; Kenichi Kumagai; Yoshihiro Matsubara; Wataru Matsutani; 憲司 小林; 佳弘 松原; 渉 松谷; 健一 熊谷

Archive | 2004

Ignition plug for I.C. engine

Satoko Ito; Kenji Kobayashi; Kenichi Kumagai

Archive | 2002

Zündkerze und Herstellungsverfahren einer Zündkerze A spark plug and manufacturing method of a spark plug

Kenichi Kumagai; Yoshihisa Sugiyama; Tomoharu Suzuki

Archive | 2002

Zündkerze und Herstellungsverfahren einer Zündkerze Spark plug and a spark plug manufacturing method

Yoshihisa Sugiyama; Tomoharu Suzuki; Kenichi Kumagai

Archive | 2002

Bougie d'allumage et méthode de fabrication de bougie d'allumage

Yoshihisa Sugiyama; Tomoharu Suzuki; Kenichi Kumagai

Archive | 2002

Spark plug and a spark plug manufacturing method

Yoshihisa Sugiyama; Tomoharu Suzuki; Kenichi Kumagai

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Collaboration

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