| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 5 | |
| #2 | United Kingdom | 3 | |
| #3 | United States | 3 | |
| #4 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Engines, pumps and turbines | |
| #3 | Basic materials chemistry | |
| #4 | Environmental technology | |
| #5 | Transport |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hernu Henri | 5 |
| #2 | Henri Hernu | 3 |
| #3 | Bernheim Julien | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE369261C | Method for operating four-stroke internal combustion engines | |
| GB157288A | Improvements in internal combustion engines | |
| GB157286A | Improvements in gas generators | |
| GB157287A | Apparatus for purifying and treating gases | |
| US1500319A | Internal-combustion engine | |
| US1408736A | Apparatus for purifying and treating gases | |
| US1408737A | Centrifugal propeller |