Joachim Weitzel

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Darmstadt, DE

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Patents Grantslast 30 patents

Information Patent Grant
Transparent medium with angular-selective transmitting or reflectin...
- Patent number 6,602,340
- Issue date Aug 5, 2003
- Merck Patent GmbH
- Christina Schank
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Process for the preparation of inclusion pigments
- Patent number 5,753,026
- Issue date May 19, 1998
- Merck Patent Gesellschaft mit beschrankter Haftung
- Mathias Kuntz
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Pigment preparation and its use
- Patent number 5,672,200
- Issue date Sep 30, 1997
- Merck Patent Gesellschaft mit beschrankter Haftung
- Dieter Heinz
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE