Erhard Wolfrum

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Duren-Birgel, DE

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for preparing samples from a flow of bulk material
- Patent number 4,930,359
- Issue date Jun 5, 1990
- Rheinische Braunkohlenwerke AG
- Erhard Wolfrum
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Process for removing noxious substances containing fluorine and/or...
- Patent number 4,450,777
- Issue date May 29, 1984
- Rheinische Braunkohlenwerke AG
- Erhard Wolfrum
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Production of calcium carbide
- Patent number 4,391,786
- Issue date Jul 5, 1983
- Hoechst Aktiengesellschaft
- Hans-Joachim Kersting
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method and apparatus for producing active coke
- Patent number 4,242,225
- Issue date Dec 30, 1980
- Erhard Wolfrum
- C01 - INORGANIC CHEMISTRY