Kiyoshi Ichikawa

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Fujishi, JA

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Patents Grantslast 30 patents

Information Patent Grant
Semipermeable composite membranes
- Patent number 4,061,821
- Issue date Dec 6, 1977
- Asahi Kasei Kogyo Kabushiki Kaisha
- Fusakazu Hayano
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL