Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5181950 | Process for compositing organic waste and installation for implementing the process | — | 1993-01-26 |
| 5066392 | Apparatus for microbiological decomposition of organic waste | — | 1991-11-19 |
| 4820108 | Arrangement for the essentially uniform level placement of bulk material in an upright circular cylindrical vessel | — | 1989-04-11 |
| 4595506 | Filtering aid for the treatment of suspensions, particularly of domestic, industrial, and other sludges for subsequent draining | — | 1986-06-17 |
| 4582514 | Method for the removal of gaseous, volatile and/or liquid impurities from waste gases | — | 1986-04-15 |
| 4392881 | Process for composting decaying material of organic waste and/or sewage sludge in two processing steps | — | 1983-07-12 |
| 4249929 | Method of digesting organic wastes | — | 1981-02-10 |
| 4191643 | Method for the mechanical preparation of organic wastes in a biological digestion process | — | 1980-03-04 |
| 4184269 | Apparatus for aerating organic waste material | — | 1980-01-22 |