Alfred Krempel

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Holzminden, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of substituted cycloketones
- Patent number 6,222,076
- Issue date Apr 24, 2001
- Haarmann & Reimer GmbH
- Alfred Krempel
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Sulphonic acids and their use as UV absorbers
- Patent number 6,042,814
- Issue date Mar 28, 2000
- Haarmann & Reimer GmbH
- Oskar Koch
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Use of benzazoles UV absorbers, new benzazoles and a process for th...
- Patent number 5,585,091
- Issue date Dec 17, 1996
- Haarmann & Reimer GmbH
- Ralf Pelzer
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Process for the preparation of pure 2-hydroxybenzyl alcohol, pure 4...
- Patent number 4,192,959
- Issue date Mar 11, 1980
- Haarmann & Reimer
- Kurt Bauer
- C07 - ORGANIC CHEMISTRY