Lead-free piezo-electric porcelain composition, piezo-electric element using the same, and method for producing lead-free piezo-electric porcelain composition

Assignee

• Ngk Spark Plug Co.

Inventors

• Masato Yamazaki (40 patents)
• Takayuki Matsuoka (13 patents)
• Yoshiteru Honda (1 patents)
• Kazuaki Kitamura (7 patents)
• Hisashi KOZUKA (13 patents)
• Toshiaki Kurahashi (8 patents)
• Yasuyuki Okimura (20 patents)
• Hideto Yamada (31 patents)
• Kazushige Ohbayashi (26 patents)

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