| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 35 | |
| #2 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Optics | |
| #3 | Electrical machinery and energy | |
| #4 | Digital networks | |
| #5 | Audio-visual technology | |
| #6 | Telecommunications | |
| #7 | Basic communication technologies | |
| #8 | Medical technology | |
| #9 | Thermal processes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Carpentier Jules | 35 |
| #2 | Abraham Henri | 2 |
| #3 | Joly Louis | 1 |
| #4 | Buzenac Ernest-Auguste-Alexandre | 1 |
| #5 | Poirson Eugene | 1 |
| #6 | Renault Louis | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1033409A | Apparatus for measuring the ratio of two electric currents. |