Naoto Niwa

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Aichi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing two-component or three-component lead zirconat...
- Patent number 4,990,324
- Issue date Feb 5, 1991
- Nippondenso Co., Ltd.
- Masahiro Tomita
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES