Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5158752 | Plant for producing ammonium polyphosphate | Thomas Staffel, Gunther Schimmel, Jurgen Grosse | 1992-10-27 |
| 5147625 | Process for the preparation of phosphorous acid | Alexander Tapper, Josef Holz | 1992-09-15 |
| 5024825 | Process for the preparation of dicalcium phosphate | Josef Holz, Franz-Josef Dany | 1991-06-18 |
| 4811701 | Coated valve for internal combustion engine | Wolfgang Kleinekathofer, Eggert Tank | 1989-03-14 |
| 4236927 | Method for the manufacture of iron-containing sintered electrodes | Manfred A. Gutjahr | 1980-12-02 |