| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 3 | |
| #2 | Germany | 2 | |
| #3 | United Kingdom | 2 | |
| #4 | Argentina | 1 | |
| #5 | Australia | 1 | |
| #6 | Brazil | 1 | |
| #7 | Canada | 1 | |
| #8 | Spain | 1 | |
| #9 | France | 1 | |
| #10 | Italy | 1 | |
| #11 | Netherlands | 1 | |
| #12 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Environmental technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Allen John E | 5 |
| #2 | Allen J | 3 |
| #3 | Allen John Edward | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA1033575A | Treatment of steel mill waste dusts containing zinc | |
| US3850613A | Treatment of steel mill waste dusts containing zinc | |
| US3870509A | Method of disposing of particulate scrap iron | |
| US3870507A | Control of pollution by recycling solid particulate steel mill wastes |