Keizo Iwase

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Shiga, JA

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Patents Grantslast 30 patents

Information Patent Grant
Lead zirconate-titanate powder of particle sizes between 0.02 and 0...
- Patent number 3,963,630
- Issue date Jun 15, 1976
- Nippon Electric Company Limited
- Masatomo Yonezawa
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES