Takeshi Iwatsuka

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Column filter using bundles of long fibers
- Patent number 4,915,833
- Issue date Apr 10, 1990
- Japan Organo Co., Ltd.
- Takeshi Iwatsuka
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Column filter using bundles of long fibers
- Patent number 4,886,601
- Issue date Dec 12, 1989
- Japan Organo Co., Ltd.
- Takeshi Iwatsuka
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL