Issued Patents 1989
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 | Michele Vescia, Attila Bereck, Hermann Sulz, Ingrid Steenken | 1989-03-21 |
SH
Sigismund Heimann
Overall (1989): #56,347 of 140,708Top 45%
1
Patents 1989