| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 12 | |
| #2 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Basic materials chemistry | |
| #3 | Organic fine chemistry | |
| #4 | Machines | |
| #5 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Non-metallic elements | |
| #2 | Acyclic or carbocyclic compounds | |
| #3 | Ammonia or cyanogen | |
| #4 | Nitrogenous fertilisers | |
| #5 | Organic fertilisers | |
| #6 | Unspecified technologies | |
| #7 | Phosphatic fertilisers | |
| #8 | Pipes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Edmond Voituron | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1819983A | Dismounting device for lead columns, pipes, or the like |