Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5302774 | Process for the production of bisphenols | Klaus Berg, Hans-Josef Buysch, Alfred Eitel, Otto Immel, Ralf Pakull +2 more | 1994-04-12 |
| 5288923 | Preparation of ethers of diphenols | Wolfgang Jacob, Manfred Ehlert | 1994-02-22 |
| 5214072 | Purification of polycarbonate, polyester carbonate or polyester waste | Wolfgang Jakob, Manfred Ehlert | 1993-05-25 |
| 5162411 | Carbonates, their production and their use as flow aids | Uwe Westeppe, Werner Nouvertne, Karsten-Josef Idel, Edgar Leitz, Ulrich Grigo | 1992-11-10 |
| 5155205 | Aromatic polycarbonate containing a special fluorine-containing bisphenol component | Wolfgang Ebert, Michael Negele | 1992-10-13 |
| 5151452 | Purification of polycarbonate and polyester carbonate waste | Wolfgang Jakob, Manfred Ehlert, Dieter Freitag | 1992-09-29 |