Tsutomu Nakagawa

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Musashino, JP

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Patents Grantslast 30 patents

Information Patent Grant
Membrane for separating an organic solvent from a water-organic sol...
- Patent number 5,173,189
- Issue date Dec 22, 1992
- Lintec Corporation
- Masaru Hoshi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Surface-hydrophilic, highly selective semipermeable membrane
- Patent number 4,948,508
- Issue date Aug 14, 1990
- Asahi Kasei Kogyo Kabushiki Kaisha
- Tsutomu Nakagawa
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Catalyst membrane
- Patent number 4,420,612
- Issue date Dec 13, 1983
- Director Genereal of Agency of Industrial Science & Technology
- Seiichi Aiba
- C13 - SUGAR INDUSTRY