| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Brazil | 7 | |
| #2 | United States | 6 | |
| #3 | Canada | 4 | |
| #4 | Germany | 4 | |
| #5 | EPO (European Patent Office) | 3 | |
| #6 | Japan | 3 | |
| #7 | Australia | 2 | |
| #8 | India | 2 | |
| #9 | South Africa | 2 | |
| #10 | Spain | 1 | |
| #11 | Mexico | 1 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Environmental technology | |
| #3 | Thermal processes | |
| #4 | Machines | |
| #5 | Civil engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Pargeter John K | 12 |
| #2 | Pargeter John Kenneth | 10 |
| #3 | Hanewald Richard H | 3 |
| #4 | Macdougall John | 3 |
| #5 | Olano Francisco | 3 |
| #6 | Hennion Francis J | 2 |
| #7 | Hennion Francis Joseph | 2 |
| #8 | Hoffman David M | 2 |
| #9 | Ahmad Umar Moez Uddin | 2 |
| #10 | Boy William A | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US5863197A | Solid flight conveying screw for furnace | |
| US4780135A | Process for the detoxification of steel plant wastes | |
| US4676741A | Radiantly heated furnace | |
| US4597564A | Rotary hearth | |
| US4636127A | Conveying screw for furnace | |
| US4622905A | Furnacing | |
| CA1143166A | Recovery of nickel and other metallic values from waste |