Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE34626 | Isomerization of bisphenols | Claus Wulff | 1994-05-31 |
| 5284981 | Ion exchangers modified with mercapto amines | Norbert Bachem, Claus Wulff | 1994-02-08 |
| 5212206 | Ion exchange modified with mercapto amines | Norbert Bachem, Claus Wulff | 1993-05-18 |
| 5091555 | Process for the vacuum distillation of crude cyanohydrins containing 3 to 6 carbon atoms using liquid jet pump | Wolfgang Buder | 1992-02-25 |
| 5015784 | Isomerization of bisphenols | Claus Wulff | 1991-05-14 |
| 4912263 | Ionic exchangers modified with thiazolines | Claus Wulff, Jurgen Hinz, Norbert Bachem | 1990-03-27 |
| 4701554 | Process for the preparation of polyphosphonic acid amides | Hermann Kauth, Manfred Schmidt, Dieter Freitag, Frank Kleiner | 1987-10-20 |
| 4463130 | Flame-resistant polymer mixtures | Volker Serini, Horst Peters, Josef Buekers, Werner Nouvertne, Dieter Freitag | 1984-07-31 |
| 4382898 | Process for the production of aromatic carboxylic acid chlorides | Dieter Freitag, Ludwig Bottenbruch, Manfred Schmidt | 1983-05-10 |
| 4382041 | Process for the production of aromatic carboxylic acid chlorides | Manfred Schmidt, Dieter Freitag, Ludwig Bottenbruch | 1983-05-03 |