Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5500124 | Process for the purifying working-up of reaction media and/or wash media obtained during preparation of cellulose ethers | Reinhard Donges, Ulrich Meyer-Blumenroth | 1996-03-19 |
| 4672113 | Process for purifying aqueous distillation residues during the treatment of liquids in the preparation of cellulose ethers | Uth H. Felcht, Michael Kostrzewa | 1987-06-09 |