| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 5 | |
| #2 | Spain | 4 | |
| #3 | United States | 4 | |
| #4 | Denmark | 3 | |
| #5 | Switzerland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Basic materials chemistry | |
| #2 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Liquid hydrocarbon mixture production | |
| #2 | Working-up pitch | |
| #3 | Chemical or physical processes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rittman Walter F | 4 |
| #2 | Whitaker Milton C | 2 |
| #3 | Hydro-Carbon Company Synthetic | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1348766A | Apparatus for manufacture of gas | |
| US1419123A | Process for the manufacture of benzene, toluene, and other aromatic hydrocarbons and the like | |
| US1419121A | Manufacture of light hydrocarbons and the like | |
| US1327001A | Manufacture of gas |