Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4382890 | Fiber reactive sulfo aryl azo N-substituted pyridone-3-carboxamide dyestuffs | Dieter Mausezahl | 1983-05-10 |
| 4210582 | Water-soluble pyrazolone-imide containing azo dyestuffs | Hans U. Schutz | 1980-07-01 |