| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 4 | |
| #2 | Austria | 3 | |
| #3 | France | 2 | |
| #4 | Switzerland | 1 | |
| #5 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Basic materials chemistry | |
| #2 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Gas, coke and tar production | |
| #2 | Presses |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hein Paul | 4 |
| #2 | Diamant-Brikett-Werke G M B H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1165408A | Briquet-cooling apparatus. | |
| US1155486A | Apparatus for coking coal briquets. | |
| GB191212139A | Improvements in and relating to Briquette Presses. | |
| US1037479A | Apparatus for coking briquets. | |
| US1039533A | Means for heating briquets and the like. |