Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5211962 | Device and process for the production of oxide-ceramic materials | Erwin Haas | 1993-05-18 |
| 4906419 | Process for the production of oxide-ceramic materials | Erwin Haas | 1990-03-06 |
| 4668819 | Process for the manufacture of unsaturated esters of carboxylic acids | Hans Fernholz, Hans Krekeler, G/u/ nter Roscher, Hans-Joachim Schmidt, Friedrich Wunder | 1987-05-26 |
| 4495215 | Fluidized bed furnace and method of emptying the same | Eike Barnert | 1985-01-22 |
| 4491277 | Method and apparatus for reclaiming foundry sand | Hans Bauer | 1985-01-01 |
| 4380663 | Process for the preparation of practically formic acid-free acetic acid | Gunter Roscher, Helmut Schaum | 1983-04-19 |