Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4303495 | Recovery of liquid and gaseous hydrocarbons from raw materials containing hydrocarbons such as oil shale and coal | Herbert Gottschlich, Christian Koch, Otto Abel | 1981-12-01 |
| 4300917 | Method for preventing adhesion or caking of hydrocarbon-containing raw materials | Christian Koch | 1981-11-17 |
| 4233036 | Process for preventing adhesion or caking of coal | Christian Koch | 1980-11-11 |