Inventor · disambiguated record
Daniel A. Norrgran
Also filed as: NORRGRAN DANIEL A
4 granted patents·87 citations·filing 1983–1998
78Inventor score
Top patents by PatentIndex Score
4 records- 0177US6149014AMill magnet separator and method for separatingERIEZ MFG CO·Filed 1998·Granted Nov 21, 2000·42 cites·24 claims
- 0274US4549959AProcess for separating molybdenite from a molybdenite-containing copper sulfide concentrateATLANTIC RICHFIELD CO·Filed 1984·Granted Oct 29, 1985·30 cites·19 claims
- 0346US4541993AProcess for the sulfatization of non-ferrous metal sulfidesATLANTIC RICHFIELD CO·Filed 1983·Granted Sep 17, 1985·7 cites·7 claims
- 0441US4597857AProcess for producing an upgraded sulfide mineral concentrate from an ore containing sulfide mineral and silicate clayATLANTIC RICHFIELD CO·Filed 1985·Granted Jul 1, 1986·8 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →