Issued Patents All Time
Showing 26–42 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5597466 | Preparation of substantially salt-free aqueous solutions of bisaminoxyalkanes | Gerhard Bauer, Roland Baumstark, Kaspar Bott | 1997-01-28 |
| 5507922 | Preparation of benzaldehyde dialkyl acetals | Dieter Hermeling, Heinz Hannebaum, Andreas Weiper-Idelmann | 1996-04-16 |
| 5354945 | Preparation of ultrapure N-vinylpyrrolidone polymers | Juergen Detering | 1994-10-11 |
| 5282939 | Removal of salts by electrodialysis | — | 1994-02-01 |
| 5221443 | Liberation of organic sulfonic acids | Rolf Schneider | 1993-06-22 |
| 5202445 | Preparation of potassium magnesium L-ascorbate 2-phosphate | Walter Dobler, Friedhelm Balkenhohl, Joachim Paust | 1993-04-13 |
| 5114554 | Removal of acid from cathodic electrocoating baths by electrodialysis | Thomas Bruecken | 1992-05-19 |
| 5091071 | Removal of acid from cathodic electrocoating baths by electrodialysis | Thomas Bruecken | 1992-02-25 |
| 5089102 | Removal of salts by electrodialysis | — | 1992-02-18 |
| 5082549 | Membrane stack unit for multichamber processes | Klemens Kneifel, Uwe Martens | 1992-01-21 |
| 5000832 | Purification of aqueous glyoxal solutions | Michael Steiniger, Leopold Hupfer | 1991-03-19 |
| 4990230 | Membrane stack unit for multichamber processes | Klemens Kneifel, Uwe Martens | 1991-02-05 |
| 4971672 | Removal of acid from cathodic electrocoating baths by electrodialysis | Thomas Bruecken | 1990-11-20 |
| 4883573 | Removal of acid from cathodic electrocoating baths by electrodialysis | Thomas Bruecken | 1989-11-28 |
| 4818409 | Obtaining aqueous solutions of organic acids or bases from aqueous solutions of their salts | Hermann Puetter | 1989-04-04 |
| 4775478 | Process for removing acid from cathodic electrocoating baths | Thomas Bruecken | 1988-10-04 |
| 4718649 | Rolling bellows for pneumatic cushioning of a vehicle | Klaus E. Pohlmann, Konrad Muller, Gunter Drescher, Gerhard Thurow | 1988-01-12 |