Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6486363 | Process for the manufacture of bis(4-hydroxyaryl)alkanes | Klaus Berg, Hans-Josef Buysch, Alfred Eitel, Gerhard Fennhoff, Clauss Wulff | 2002-11-26 |
| 5545764 | Process for the continuous production of high purity bisphenol A | Klaus Berg, Claus Wulff, Alfred Eitel, Kurt P. Meurer, Tony van Osselaer +1 more | 1996-08-13 |
| 5455282 | Process of regenerating sulfonic acid cation exchange resins with a mercaptoethylamine or thiazolidine | Klaus Berg, Franz Backes, Alfred Eitel, Claus Wulff | 1995-10-03 |
| 5395857 | Optimized ion exchanger beds for the synthesis of bisphenol A | Klaus Berg, Alfred Eitel, Claus Wulff | 1995-03-07 |
| 5300700 | Process for the production of high-purity bisphenol A | Hans-Peter Wirges, Claus Wulff, Alfred Eitel | 1994-04-05 |