| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 2 | |
| #2 | Argentina | 1 | |
| #3 | Austria | 1 | |
| #4 | Belgium | 1 | |
| #5 | Canada | 1 | |
| #6 | German Democratic Republic | 1 | |
| #7 | Germany | 1 | |
| #8 | Spain | 1 | |
| #9 | France | 1 | |
| #10 | India | 1 | |
| #11 | Italy | 1 | |
| #12 | Japan | 1 | |
| #13 | Netherlands | 1 | |
| #14 | Sweden | 1 | |
| #15 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Basic materials chemistry | |
| #2 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Refining | |
| #2 | Separation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Legast Etienne | 8 |
| #2 | Etienne Legast | 1 |
| #3 | Echiennu Rega | 1 |
| Publication | Filing date | Title |
|---|---|---|
| AR241201A1 | Device to extract with water steam essential oil from a vegetable matter. | |
| CH648489A5 | Use of a device comprising an extraction chamber for extracting a vegetable matter with an organic solvent vapour | |
| CH641832A5 | Process for the vapor extraction of essential oil from a plant material and device for carrying out this process. |