| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 17 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Machines | |
| #3 | Machine tools | |
| #4 | Thermal processes | |
| #5 | Environmental technology | |
| #6 | Mechanical elements | |
| #7 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Iron and steel production | |
| #3 | Cutting | |
| #4 | Pig-iron processing | |
| #5 | Casting metal | |
| #6 | Reduction of greenhouse gas emissions | |
| #7 | Railway bodies | |
| #8 | Supplying fuel to combustion device | |
| #9 | Clutches and brakes | |
| #10 | Furnaces |
| # | Name | Total Patents |
|---|---|---|
| #1 | Cromwell John C | 11 |
| #2 | Lash Horace W | 4 |
| #3 | Sundt Oscar | 3 |
| #4 | Seaver John W | 1 |
| #5 | Koelkebeck Carl W A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1013278A | Cover for pits. | |
| US928403A | Operating mechanism for furnace-valves. | |
| US1002968A | Reversing-valve and operating mechanism therefor. | |
| US927557A | Protecting-shield for furnace-flues. | |
| US869960A | Metallurgical furnace. | |
| US823669A | Tilting-furnace. | |
| US865240A | Combined ingot stripper and charger. | |
| US935964A | Steel plant. | |
| US846828A | Straightening-press. | |
| US810845A | Shear-table. | |
| US727754A | Blast-furnace-charging apparatus. | |
| US805563A | Manufacture of steel. | |
| US736365A | Blast-furnace. | |
| US727753A | Blast-furnace-charging apparatus. | |
| US694332A | Charging-buggy. | |
| US713361A | Rotary shears. | |
| US697291A | Leading-spindle. |