| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 7 | |
| #2 | United Kingdom | 3 | |
| #3 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Basic materials chemistry | |
| #2 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Gas, coke and tar production | |
| #2 | Separating solids using liquids |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ernest Hodeige | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB404607A | Coke oven | |
| GB371543A | Regenerating coke oven | |
| GB206105A | Improvements in or relating to rotary furnaces | |
| US1580728A | Combined washing and sorting apparatus |