Inventor · disambiguated record
Cornelis Grefhorst
Also filed as: GREFHORST CORNELIS
3 granted patents·6 citations·filing 2003–2008
59Inventor score
Technology areasB22C
Top patents by PatentIndex Score
3 records- 0157US8029711B2Method for producing a core sand and/or mold sand for foundry purposesS & B IND MINERALS GMBH·Filed 2008·Granted Oct 4, 2011·2 cites·14 claims
- 0247US7281570B2Method for the production of a core sand and/or molding sand for casting purposesS & B IND MINERALS GMBH·Filed 2004·Granted Oct 16, 2007·2 cites·11 claims
- 0347US7188660B2Method for producing a molding sand that is in particular recirculated, for foundry purposesIKO MINERALS GMBH·Filed 2003·Granted Mar 13, 2007·2 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →