Walter Liebenow

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Nuremberg, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of basically substituted phenylacetonit...
- Patent number 4,697,035
- Issue date Sep 29, 1987
- Ludwig Heumann & Co., GmbH
- Lothar Kisielowski
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Quaternary 1,1-diphenyl-4-pyrrolidinium-2-butyne salts, a process f...
- Patent number 4,420,488
- Issue date Dec 13, 1983
- Ludwig Heumann & Co. GmbH
- Walter Liebenow
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
2,4-Diamino-5-(4'-methylthio)benzylpyrimidenes, compounds, composit...
- Patent number 4,180,578
- Issue date Dec 25, 1979
- Ludwig Heumann, & Co. GmbH
- Edgar Fritschi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the production of 2,4-diamino-5-(3',4',5'-trimethoxyben...
- Patent number 4,125,721
- Issue date Nov 14, 1978
- Ludwig Heumann & Co. GmbH
- Walter Liebenow
- C07 - ORGANIC CHEMISTRY