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Datteln, Germany

Ruhr-zink Gmbh

USPTO Granted Patents = 3

Forward Citations = 23

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7 inventors (with patents filed for the assignee):

Adolf Von Ropenack (3 out of 4 patents)

Winfried Bohmer (2 out of 2 patents)

Heiner Grimm (1 out of 1 patent)

4. Ulrich Heubner (1 out of 4 patents)

5. Volker Wiegand (1 out of 2 patents)

6. Gunter Smykalla (1 out of 2 patents)

7. Gunter Stock (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 5453253 - Method of reprocessing jarosite-containing residues (1995-09-26),

2. 4789446 - Method of processing residues from the hydrometallurgical production of (1988-12-06),

3. 4364807 - Method of electrolytically recovering zinc (1982-12-21),

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USPTO Data Jan 1 1976 - Dec 16 2025

3 Patents

#1 in Datteln

#8,262 in Germany

Datteln, Germany

Ruhr-zink Gmbh

Forward Citations = 23

7 inventors:

Adolf Von Ropenack (3 out of 4 patents)

Winfried Bohmer (2 out of 2 patents)

Heiner Grimm (1 out of 1 patent)

4. Ulrich Heubner (1 out of 4 patents)

5. Volker Wiegand (1 out of 2 patents)

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