Hirotsugu Kitamura

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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 isolating 4,4-dihydroxydiphenyl sulfone from a mixture...
- Patent number 4,382,147
- Issue date May 3, 1983
- Tokai Denka Kogyo Kabushiki Kaisha
- Hirotsugu Kitamura
- C07 - ORGANIC CHEMISTRY