Inventor · disambiguated record
Norbert L. Piret
Also filed as: PIRET NORBERT L
4 granted patents·61 citations·filing 1976–1979
78Inventor score
Files withDUISBURGER KUPFERHUETTE4
Top patents by PatentIndex Score
4 records- 0170US4131454AProcess for recovering silver and gold from chloride solutionsDUISBURGER KUPFERHUETTE·Filed 1977·Granted Dec 26, 1978·16 cites·23 claims
- 0268US4127639AProcess for recovering silver from residues containing silver and leadDUISBURGER KUPFERHUETTE·Filed 1976·Granted Nov 28, 1978·17 cites·15 claims
- 0367US4030990AProcess for recovering electrolytic copper of high purity by means of reduction electrolysisDUISBURGER KUPFERHUETTE·Filed 1976·Granted Jun 21, 1977·17 cites·33 claims
- 0461US4260588AProduction of sulphidic copper concentratesDUISBURGER KUPFERHUETTE·Filed 1979·Granted Apr 7, 1981·11 cites·9 claims
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