Jun-ichi Sakamoto

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Hyogo-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for preparing aromatic or heteroaromatic sulfur compound
- Patent number 5,932,731
- Issue date Aug 3, 1999
- Sumitomo Seika Chemicals Co., Ltd.
- Hiroshi Goda
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing aromatic or heteroaromatic sulfonyl halides
- Patent number 5,811,571
- Issue date Sep 22, 1998
- Hitoshi Karino
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing aromatic or heteroaromatic sulfur compound
- Patent number 5,741,933
- Issue date Apr 21, 1998
- Sumitomo Seika Chemicals Co., Ltd.
- Hiroshi Goda
- C07 - ORGANIC CHEMISTRY