| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 15 | |
| #2 | Germany | 2 | |
| #3 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Basic materials chemistry | |
| #3 | Chemical engineering | |
| #4 | Machines | |
| #5 | Mechanical elements | |
| #6 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Ammonia or cyanogen | |
| #2 | Purifying gas composition | |
| #3 | Non-metallic elements | |
| #4 | Rare-earth metal compounds | |
| #5 | Separation | |
| #6 | Animal shoeing | |
| #7 | Iron and steel production | |
| #8 | Pipe-line systems | |
| #9 | Milling |
| # | Name | Total Patents |
|---|---|---|
| #1 | Feld Walther | 15 |
| #2 | Walther Feld | 1 |
| #3 | Jahl Anton | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE339612C | Process for converting a sulphite and bisulphite thionate solution into pure thionate solution | |
| US927342A | Process of recovering sulfur. |