Masaru Kawai

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Electrolytic conversion solution for treating metal surface and met...
- Patent number 5,772,865
- Issue date Jun 30, 1998
- Dipsol Chemicals Co., Ltd.
- Shigemi Tanaka
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Admixture for cement
- Patent number 5,653,796
- Issue date Aug 5, 1997
- Dipsol Chemicals Co., Ltd.
- Masaru Kawai
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES