Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6489518 | Process for reducing the salt content of fractions comprising high boilers obtained in the preparation of phenol from cumene, by extraction | Manfred Weber, Markus Weber, Heinrich van Barneveld, Peter Bickert | 2002-12-03 |
| 6489519 | Process for removal of impurities from phenol by means of at least one acid catalyst | Heinrich van Barneveld, Otto Gerlich, Otto Schnurr, Hugo H. J. M. Liefooche | 2002-12-03 |