| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 30 | |
| #2 | Germany | 27 | |
| #3 | Belgium | 2 | |
| #4 | Switzerland | 2 | |
| #5 | United States | 2 | |
| #6 | Austria | 1 |
| # | Name | Total Patents |
|---|---|---|
| #1 | Fischer Ernst Dr | 8 |
| #2 | Seidenfaden Wilhelm Dr | 8 |
| #3 | Kirst Werner Dr | 4 |
| #4 | Hahn Georg Dr | 3 |
| #5 | Jellinek Karl Dipl-Ing | 3 |
| #6 | Naphtol-Chemie Offenbach | 2 |
| #7 | Kuehnel Manfred Dr | 2 |
| #8 | Albert Hans Dr | 2 |
| #9 | Redlich Karl Dr | 1 |
| #10 | Schmitt Robert Dr | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2553375A | Process of dyeing fur skins with insoluble azo dyestuffs | |
| DE850207C | Process for the preparation of water-insoluble monoazo dyes |