Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5306847 | Manufacture of 1,2-propylene glycol | Wolfgang Harder | 1994-04-26 |
| 5298668 | Catalytic preparation of formaldehyde condensates | Wolfgang Harder, Klaus Ebel, Johann-Peter Melder, Joaquim Henrique Teles | 1994-03-29 |