Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4666347 | Hydraulic conveying of solids | — | 1987-05-19 |
| 4580049 | Probe for locating mineral deposits | Helmut Winnacker, Klaus Johnen | 1986-04-01 |
| 4468154 | Method of disposal or temporary storage of waste material | Jurgen Meier, Siegfried Frank | 1984-08-28 |
| 4274941 | Process for generating combustible gases, liquid coal byproducts and superheated steam from coal | Werner Peters, Hans-Dieter Schilling | 1981-06-23 |