| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 5 | |
| #2 | Germany | 3 | |
| #3 | United Kingdom | 2 | |
| #4 | Austria | 1 | |
| #5 | Belgium | 1 | |
| #6 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Basic communication technologies | |
| #3 | Electrical machinery and energy | |
| #4 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Analysing materials | |
| #2 | Modulation | |
| #3 | Measuring volume | |
| #4 | Amplifiers | |
| #5 | Separation | |
| #6 | Electric discharge tubes | |
| #7 | Measuring electric variables |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kamp Johannes Jacobus | 3 |
| #2 | Smals Jacobus Laurens | 2 |
| #3 | Jacobus Kamp Johannes | 1 |
| #4 | Laurens Smals Jacobus | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE1037586B | Device for measuring the conductivity of liquids | |
| US3003103A | Device for continuously measuring the concentration of solids, suspended in a fluid, said solids having electric properties which differ from those of the fluid | |
| GB820010A | Ring modulator | |
| DE1056268B | Arrangement for phase measurement |