Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5286401 | Use of heterocyclic compounds as bleach activators or optical brighteners in washing and cleaning agents | Wolfgang Trieselt, Erwin Hahn, Johannes Perner, Alfred Oftring | 1994-02-15 |