Hirohisa Nitoh

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Shizuoka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for the production of pure alkanesulfonic acids
- Patent number 5,912,385
- Issue date Jun 15, 1999
- Tokai Denka Kogyo Kabushiki Kaisha
- Kazuyoshi Kushibe
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing styrene oxide
- Patent number 5,155,241
- Issue date Oct 13, 1992
- Tokai Denka Kogyo Kabushiki Kaisha
- Keiichi Nishibe
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Water-soluble thiourea dioxide derivatives and process for preparin...
- Patent number 5,149,871
- Issue date Sep 22, 1992
- Tokai Denka Kogyo Kabushiki Kaisha
- Hirohisa Nitoh
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing styrene oxide
- Patent number 5,041,569
- Issue date Aug 20, 1991
- Tokai Denka Kogyo Kabushiki Kaisha
- Saburo Enomoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing thiourea dioxide derivatives
- Patent number 4,943,661
- Issue date Jul 24, 1990
- Tokai Denka Kogyo Kabushiki Kaisha
- Hirohisa Nitoh
- C07 - ORGANIC CHEMISTRY