Bernd Schonfeld

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Bad Nenndorf, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of precipitated silica
- Patent number 4,738,839
- Issue date Apr 19, 1988
- Bernd Schonfeld
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Chlorofluoroferrate(II,III), a process for its manufacture, its use...
- Patent number 4,370,148
- Issue date Jan 25, 1983
- Riedel-De Haen Aktiengesellschaft
- Rudolf Hirschberg
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of a red emitting phosphor coated with...
- Patent number 4,297,390
- Issue date Oct 27, 1981
- Riedel-de Haen Aktiengesellschaft
- Karl Franz
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Non-toxic, active filler for grinding disks, its use and grinding d...
- Patent number 4,263,016
- Issue date Apr 21, 1981
- Riedel-de Haen Aktiengesellschaft
- Rudolf Hirschberg
- B24 - GRINDING POLISHING