| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 4 | |
| #2 | Germany | 4 | |
| #3 | Switzerland | 3 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy |
| # | Technology | |
|---|---|---|
| #1 | Foundry moulding | |
| #2 | Casting metal |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nielsen Friedrich | 8 |
| #2 | Friedrich Nielsen | 3 |
| Publication | Filing date | Title |
|---|---|---|
| DE2457678A1 | Horizontal runner channels for filling foundry moulds - with increasing runner section to compensate for frictional losses | |
| DE2215273A1 | Vortex pig bed - with angled runners before feed gate and flattened outflow | |
| DE1941908A1 | Infeed duct for sand casting and ingot - moulds | |
| CA564842A | Method of casting metals | |
| CA511717A | Casting moulds | |
| CA571849A | Centrifugal casting apparatus | |
| CA519882A | Method of casting metals, preferably light metals |