| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 2 | |
| #2 | Netherlands | 2 | |
| #3 | Austria | 1 | |
| #4 | Switzerland | 1 | |
| #5 | Spain | 1 | |
| #6 | France | 1 | |
| #7 | United Kingdom | 1 | |
| #8 | Italy | 1 | |
| #9 | Sweden | 1 | |
| #10 | United States | 1 | |
| #11 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Basic materials chemistry |
| # | Technology | |
|---|---|---|
| #1 | Special lubricating compositions | |
| #2 | Lubricating compositions | |
| #3 | Fuels |
| # | Name | Total Patents |
|---|---|---|
| #1 | Zalm Fredericus Bastiaan Van | 2 |
| #2 | Van Zalm Fredericus Bastiaan | 1 |
| #3 | Van Zalm F B | 1 |
| #4 | Zalm F Van | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CH637420A5 | Liquid mineral hydrocarbon motor fuel | |
| DE2536119A1 | Anhydrous thermoforming agent and the process for its production | |
| GB1417567A | Method of preparing a lubricant |