Lothar Steinfeld

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Schwelm, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for manufacturing cellulose acetate membranes
- Patent number 5,505,890
- Issue date Apr 9, 1996
- Akzo nv
- Gustav Duweg
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Grant
Cellulose acetate membranes
- Patent number 5,387,345
- Issue date Feb 7, 1995
- Akzo nv
- Gustav Dunweg
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING