| Prince Minerals, Inc. Patent applications |
| Patent application number | Title | Published |
|---|
| 20110048279 | Anti-Veining Agent for Metal Casting - Additives to foundry sand cores are provided for reducing or eliminating surface defects in metal castings. The additives general comprise an iron oxide component and a glass component which is preferably free of lithium oxide. | 03-03-2011 |
| 20090314461 | Anti-Veining Agent for Metal Casting - Additives to foundry sand cores are provided for reducing or eliminating surface defects in metal castings. The additives generally comprise an iron oxide component and a glass component which is preferably free of lithium oxide. | 12-24-2009 |
