Johan F. Witte

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Amsterdam, NL

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Patents Grantslast 30 patents

Information Patent Grant
Membrane with perforations, method for producing such a membrane an...
- Patent number 4,844,778
- Issue date Jul 4, 1989
- Stork Veco B.V.
- Johan F. Witte
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Continuously working crystallizer
- Patent number 4,486,395
- Issue date Dec 4, 1984
- Goudsche Machinefabriek B.V.
- Johan F. Witte
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL