Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4813971 | Use of cyclic esters of sulfurous acid in the dyeing of polyamide textile materials | Sigismund Heimann, Michele Vescia, Attila Bereck, Ingrid Steenken | 1989-03-21 |