| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 14 | |
| #2 | United Kingdom | 3 |
| # | Industry | |
|---|---|---|
| #1 | Basic materials chemistry | |
| #2 | Materials and metallurgy | |
| #3 | Chemical engineering | |
| #4 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Gas, coke and tar production | |
| #2 | Working-up pitch | |
| #3 | Ammonia or cyanogen | |
| #4 | Cremation furnaces | |
| #5 | Separation |
| Publication | Filing date | Title |
|---|---|---|
| GB180315A | Improvements in or relating to the distillation of combustibles | |
| GB129994A | Improvements in Coke Ovens and the like. | |
| GB126960A | A Process of, and Apparatus for, the Extraction of Hydrocarbons from Oil. |