| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Germany | 1 | |
| #3 | France | 1 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Materials and metallurgy | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Furnaces | |
| #2 | Details of furnaces | |
| #3 | Unspecified technologies | |
| #4 | Unspecified technologies | |
| #5 | Iron and steel production | |
| #6 | Pig-iron processing | |
| #7 | Metal production and refining | |
| #8 | Building materials |
| # | Name | Total Patents |
|---|---|---|
| #1 | Simpson Kenneth M | 8 |
| #2 | Charlton Reynders | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2142762A | Furnace | |
| US2057065A | Heating process | |
| US1940977A | Metallurgical process and apparatus | |
| US1943263A | Refractory and method of manufacture | |
| US1939795A | Method of making chromium steel | |
| US1925941A | Furnace | |
| US1925942A | Furnace | |
| DE665180C | Hearth furnace with several burners arranged in the furnace ceiling | |
| GB380502A | Improvements in furnaces | |
| US1812563A | Metallurgical process | |
| US1868952A | Production of sponge iron |