Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5705073 | Method for the disposal of excess sludge | Wolfgang Glaser, Kurt Tamandl, Peter Yaldez | 1998-01-06 |
| 5643548 | Drying and separating process and plant | Josef Bammer, Bernhard Blocher, Wolfgang Glaser, Walter Staufer, Peter Yaldez | 1997-07-01 |
| 4880313 | Method and nozzle for mixing mediums of different viscosity | Siegfried Meissl | 1989-11-14 |
| 4834837 | Method for delignification of cellulose with oxygen | Siegfried Meissl, Helmut Schweiger, Norbert Meindl, Karl Schwarzl, Anton Hruschka | 1989-05-30 |
| 4198385 | Reduction of sodium sulfate to sodium sulfide | Erich Feldbaumer, Alfred Sandri | 1980-04-15 |