| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 21 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Machine tools | |
| #3 | Packaging and shipping | |
| #4 | Civil engineering | |
| #5 | Environmental technology | |
| #6 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Rolling metal | |
| #2 | Casting metal | |
| #3 | Iron and steel production | |
| #4 | Transport or storage devices | |
| #5 | Mining | |
| #6 | Steam engine plants | |
| #7 | Sawing | |
| #8 | Pig-iron processing | |
| #9 | Dredging | |
| #10 | Contaminated soil reclamation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Pugh John D | 23 |
| #2 | Redwine James C | 1 |
| #3 | Morris David W | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1995941A | Metallurgical furnace | |
| US2039738A | Metallurgical furnace | |
| US1969325A | Hot metal car | |
| US1981326A | Forging tapered articles | |
| US1929004A | Excavator | |
| US1804544A | Car dumping apparatus | |
| US1804543A | Car dumping apparatus | |
| US1828619A | Manipulator for ingots, blooms and the like | |
| US1662332A | Rolling mill | |
| US1553550A | Pouring device for hot-metal containers | |
| US1662331A | Rolling mill | |
| US1579658A | Car-weighing scale | |
| US1534187A | Hot-metal car | |
| US1488436A | Method of and apparatus for transporting slag | |
| US1544776A | Rolling mill and method of forming flanged sections | |
| CA188994A | Car for hot metal | |
| US1521317A | Hot-metal car | |
| US1481302A | Locomotive | |
| US1374525A | Coal-mining machine | |
| US1251282A | Hot-metal car. |