Hisao Kojima

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Tsurumi-ku, Yokohama-shi, Kanagawa-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for removing impurities in liquid
- Patent number 6,431,528
- Issue date Aug 13, 2002
- Hisao Kojima
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Motionless mixer and method for manufacturing the same
- Patent number 5,312,185
- Issue date May 17, 1994
- Hisao Kojima
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL