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Ja-young Koo
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Plymouth, MN, US
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last 30 patents
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Patent Grant
Microporous peek membranes and the preparation thereof
Patent number
4,992,485
Issue date
Feb 12, 1991
The Dow Chemical Company
Ja-Young Koo
D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
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Patent Grant
Novel polyamide reverse osmosis membranes
Patent number
4,859,384
Issue date
Aug 22, 1989
Filmtec Corp.
Richard F. Fibiger
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Novel polyamide reverse osmosis membranes
Patent number
4,769,148
Issue date
Sep 6, 1988
The Dow Chemical Company
Richard F. Fibiger
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL