Toshikazu Yagi

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for purifying pyruvic acid compounds
- Patent number 6,348,617
- Issue date Feb 19, 2002
- Sumitomo Chemical Company, Limited
- Hideki Ushio
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing olefin oxides
- Patent number 5,573,989
- Issue date Nov 12, 1996
- Sumitomo Chemical Company, Limited
- Keisuke Sugita
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing olefin oxides
- Patent number 5,525,741
- Issue date Jun 11, 1996
- Sumitomo Chemical Company, Limited
- Keisuke Sugita
- C07 - ORGANIC CHEMISTRY