Assignee
DUISBURGER KUPFERHUETTE
7 granted patents·107 citations·filing 1974–1979
Top patents by PatentIndex Score
7 records- 0182US4008076AMethod for processing manganese nodules and recovering the values contained thereinDUISBURGER KUPFERHUETTE·Filed 1976·Granted Feb 15, 1977·33 cites·28 claims
- 0270US4131454AProcess for recovering silver and gold from chloride solutionsDUISBURGER KUPFERHUETTE·Filed 1977·Granted Dec 26, 1978·16 cites·23 claims
- 0368US4127639AProcess for recovering silver from residues containing silver and leadDUISBURGER KUPFERHUETTE·Filed 1976·Granted Nov 28, 1978·17 cites·15 claims
- 0467US4030990AProcess for recovering electrolytic copper of high purity by means of reduction electrolysisDUISBURGER KUPFERHUETTE·Filed 1976·Granted Jun 21, 1977·17 cites·33 claims
- 0561US4260588AProduction of sulphidic copper concentratesDUISBURGER KUPFERHUETTE·Filed 1979·Granted Apr 7, 1981·11 cites·9 claims
- 0645US4104055AProcess for working up copper cementate sludgesDUISBURGER KUPFERHUETTE·Filed 1974·Granted Aug 1, 1978·7 cites·9 claims
- 0739US3969107ACombined process for working up pure and complex copper concentratesDUISBURGER KUPFERHUETTE·Filed 1975·Granted Jul 13, 1976·6 cites·8 claims
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