Inventor · disambiguated record
Leif E. I. Hummelstedt
Also filed as: HUMMELSTEDT LEIF E I · HUMMELSTEDT LEIF ERIK I · HUMMELSTEDT LEIF ERIK INGMAR
3 granted patents·26 citations·filing 1975–1988
68Inventor score
Files withOUTOKUMPU OY3
Top patents by PatentIndex Score
3 records- 0175US4120817AExtraction agent compositionOUTOKUMPU OY·Filed 1975·Granted Oct 17, 1978·17 cites·5 claims
- 0255US4818503AExtraction process for removing and recovering metals from aqueous solutionsOUTOKUMPU OY·Filed 1987·Granted Apr 4, 1989·7 cites·14 claims
- 0333US5118478AExtractrion process for removing and recovering metals from aqueous solutionsOUTOKUMPU OY·Filed 1988·Granted Jun 2, 1992·2 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →