Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5618508 | Process for purifying exhaust gas using modified calcium hydroxide | Roland Fichtel | 1997-04-08 |
| 5352647 | Composition for separating out noxious substances from gases and exhaust gases | — | 1994-10-04 |
| 5306475 | Reactive calcium hydroxides | Roland Fichtel | 1994-04-26 |
| 5209912 | Process for separating out noxious substances from gases and exhaust gases | — | 1993-05-11 |