Jun Hasegawa

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Cylindrical hollow carriers for microorganisms made of nonwoven fabric
- Patent number 4,957,868
- Issue date Sep 18, 1990
- Chiyoda Chemical Engineering & Constructions Co., Ltd.
- Yoshinori Yushina
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE