| # | Country | Total Patents | |
|---|---|---|---|
| #1 | India | 6 | |
| #2 | Germany | 4 | |
| #3 | Greece | 4 | |
| #4 | Netherlands | 3 | |
| #5 | Austria | 2 | |
| #6 | United Kingdom | 2 | |
| #7 | Australia | 1 | |
| #8 | Czechoslovakia | 1 | |
| #9 | Egypt | 1 | |
| #10 | Spain | 1 | |
| #11 | Poland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Basic materials chemistry | |
| #2 | Environmental technology | |
| #3 | Organic fine chemistry | |
| #4 | Machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Swanson Rollan Dr | 9 |
| #2 | Swanson Dr Rollan | 2 |
| #3 | Rollan Swanson Dr | 2 |
| #4 | Swanson Rollan | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE3303619A1 | Process for recovering hydrocarbons from shale oil rock | |
| DE3114766A1 | METHOD FOR CONVERTING COAL OR Peat TO GASEOUS HYDROCARBONS OR VOLATILE DISTILLATES OR MIXTURES THEREOF | |
| AU6065980A | Converting coal to gaseous hydrocarbons and volatile distillates |