Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4764107 | Shaft arrangement for thermal and/or material transfer processes between a gas and bulk material | Erich Sundermann, Hanno Laurien, Wolfgang Vahlbrauk | 1988-08-16 |
| 4752359 | Method of producing active form coke | Erich Sundermann, Hanno Laurien | 1988-06-21 |
| 4741889 | Process for adsorptive removal of substances from flue gases | Jürgen Ritter, Erich Sundermann, Hanno Laurien | 1988-05-03 |
| 4708642 | Process for the thermal and/or chemical treatment of grained, granular or lump material | Erich Sundermann, Hanno Laurien, Wolfgang Vahlbrauk | 1987-11-24 |
| 4703032 | Active coke produced from pit coal and production process thereof | Erich Sundermann, Otto Abel | 1987-10-27 |
| 4664623 | Process and apparatus for the thermal treatment of trickling material swellable or rendered swellable, and containing aluminosilicates | Erich Sundermann, Hanno Laurien, Wolfgang Vahlbrauk | 1987-05-12 |