| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 3 | |
| #2 | Australia | 2 | |
| #3 | Germany | 2 | |
| #4 | Spain | 2 | |
| #5 | Sweden | 2 | |
| #6 | Canada | 1 | |
| #7 | USSR (Union of Socialist Soviet Republics) | 1 | |
| #8 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Environmental technology | |
| #3 | Chemical engineering | |
| #4 | Machine tools | |
| #5 | Machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Burlingame Richard D | 4 |
| #2 | Burlingame Richard Dexter | 3 |
| #3 | Yarnell William T | 2 |
| #4 | Burlingame R | 2 |
| #5 | Nauert Robert Lee | 2 |
| #6 | Burlingame R D | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4044459A | High-grade metallic products | |
| AU6217373A | Flotation separation process | |
| US3883997A | Process for producing high-grade metallic products from solid slags and high-grade metallic products | |
| US3607226A | Ferrous melting stock containing a carbon additive and method |