Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8475587 | Method of improving the product properties of clinker in the firing of raw meal | Albert Obrist, Peter Von Zedtwitz | 2013-07-02 |
| 6432162 | Process for melting ashes, slags or glass | Hans Ruegg, Christian Steiner, Beat Stoffel | 2002-08-13 |
| 5848960 | Process for vitrifying residues from flue gas cleaning | Gunter Mechtersheimer | 1998-12-15 |
| 5809056 | Vitrification furnace with a gas light seal | Helge Jansen, Ludwig Weiler | 1998-09-15 |
| 5574746 | Melting furnace for thermal treatment of special wastes containing heavy metals and/or dioxin | Hans Ammon, Markus Pfister | 1996-11-12 |
| 5501431 | Melting furnace for residues from waste incineration plants | Markus Pfister | 1996-03-26 |
| 5380500 | Process for separating vaporous heavy metal compounds from a carrier gas and apparatus for carrying out the process | Michael Hirth, Joachim Jochum, Harald Jodeit | 1995-01-10 |
| 5298227 | Process for separating vaporous heavy metal compounds from a carrier gas and apparatus for carrying out the process | Michael Hirth, Joachim Jochum, Harald Jodeit | 1994-03-29 |
| 5173919 | Manipulation of the exit gas flow in a melting furnace | Erwin Schmidl, Markus Hubig, Michael Hirth | 1992-12-22 |
| 5093103 | Process for separating off poisonous volatile chemical compounds from a mixture of solid particles having a particle size of up to 200 microns | Joachim Jochum, Harald Jodeit | 1992-03-03 |
| 4986347 | Scraper | Michael Hirth, Joachim Jochum | 1991-01-22 |