Werner Stumpfi

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Ludwigshafen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Hub for magnetic tape cassettes, especially compact cassettes, and...
- Patent number 4,541,587
- Issue date Sep 17, 1985
- BASF Aktiengesellschaft
- Werner Stumpfi
- G11 - INFORMATION STORAGE
Information Patent Grant
Hub for magnetic tape cassettes, especially compact cassettes, and...
- Patent number 4,515,331
- Issue date May 7, 1985
- BASF Aktiengesellschaft
- Werner Stumpfi
- G11 - INFORMATION STORAGE
Information Patent Grant
Stabilization of chromium dioxide magnetic pigments
- Patent number 4,177,317
- Issue date Dec 4, 1979
- BASF Aktiengesellschaft
- Eduard Schoenafinger
- G11 - INFORMATION STORAGE