Byong-Wa Chun

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Cement and cement composition having improved rheological properties
- Patent number 5,583,183
- Issue date Dec 10, 1996
- W. R. Grace & Co.-Conn.
- David C. Darwin
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Cement and cement composition having improved rheological properties
- Patent number 5,393,343
- Issue date Feb 28, 1995
- W. R. Grace & Co.-Conn.
- David C. Darwin
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES