| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Denmark | 1 | |
| #3 | France | 1 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Basic materials chemistry |
| # | Technology | |
|---|---|---|
| #1 | Grates | |
| #2 | Producer gas production | |
| #3 | Feeding fuel to combustion device | |
| #4 | Solid fuel combustion | |
| #5 | Furnaces |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wood Wilfred Rothery | 4 |
| #2 | Smith Martin Van Buren | 2 |
| #3 | Knowlton Charles A | 1 |
| #4 | Oakman Charles P | 1 |
| #5 | Girtanner Frederick | 1 |
| #6 | Leiter John A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US987661A | Mechanical stoker. | |
| US969066A | Melting-furnace. | |
| US868338A | Grate. | |
| US867979A | Stoker. | |
| US715311A | Process of generating producer-gas. | |
| US674548A | Underfeed-furnace. | |
| US664521A | Furnace-grate. | |
| US672973A | Mechanical stoker. | |
| US715310A | Gas-producer. | |
| GB189817179A | Improvements in Underfeed Stokers and Furnaces thereby. |