Achim Riemann

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Griesheim, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method for making aromatic phosphorus compounds
- Patent number 4,698,448
- Issue date Oct 6, 1987
- Rohm GmbH
- Werner Ude
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for making 9,9-bis-(4-hydroxyphenyl)-fluorene
- Patent number 4,675,458
- Issue date Jun 23, 1987
- Ronm GmbH
- Achim Riemann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for making 4,4'-dihydroxydiphenyl ether
- Patent number 4,638,099
- Issue date Jan 20, 1987
- Rohm GmbH
- Achim Riemann
- C07 - ORGANIC CHEMISTRY