Inventor

GREFHORST CORNELIS

NL3 patents

⚠️ This page may combine multiple inventors who share the name “GREFHORST CORNELIS”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

S & B IND MINERALS GMBH

2 patents

US7281570B2Oct 16, 2007

Method for the production of a core sand and/or molding sand for casting purposes

S & B IND MINERALS GMBH2 citations56

US8029711B2Oct 4, 2011

Method for producing a core sand and/or mold sand for foundry purposes

S & B IND MINERALS GMBH2 citations48

IKO MINERALS GMBH

1 patent

US7188660B2Mar 13, 2007

Method for producing a molding sand that is in particular recirculated, for foundry purposes

IKO MINERALS GMBH2 citations55