2.7 Percent Or More Carbon Equivalent Containing (i.e., Cast Iron) Patents (Class 420/13)
- Adding magnesium as a liquid, vapor or as a solid agent entrained by gas (e.g., fluidized) (Class 420/19)
- Flowing molten iron alloy onto solid magnesium containing agent, or adding solid magnesium containing agent to molten stream of iron alloy (Class 420/20)
- Mechanically plunging magnesium containing agent below surface of iron alloy melt (Class 420/21)
- Separate addition of plural agents, at least one containing magnesium (Class 420/22)
- Magnesium containing agent is coated, impregnated, or compacted (e.g., briquetted, coated particles) (Class 420/23)
- Magnesium present in agent only as a compound with a nonmetal (Class 420/24)
- In agent also containing silicon, rare earth, or alkaline earth metal (Class 420/25)