| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Brazil | 18 | |
| #2 | Italy | 12 | |
| #3 | United Kingdom | 3 | |
| #4 | Sweden | 3 | |
| #5 | United States | 3 | |
| #6 | South Africa | 3 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Mechanical elements | |
| #3 | Machines | |
| #4 | Materials and metallurgy | |
| #5 | Environmental technology | |
| #6 | Machine tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Reitz J | 4 |
| #2 | Schieber G | 4 |
| #3 | Anderko K | 3 |
| #4 | Kelm W | 3 |
| #5 | Wacker E | 2 |
| #6 | Sander W | 2 |
| #7 | Frese H | 2 |
| #8 | Zammert W | 2 |
| #9 | Steidle W | 2 |
| #10 | Diez A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1512350A | Multiple-spoke steering wheel | |
| GB1504019A | Piston for internal combustion engines | |
| US3799709A | Radial seal for rotary engine pistons | |
| US3802810A | Light alloy piston for rotary engines | |
| ZA7101284B | Light alloy piston | |
| US3735746A | Ring carrier for light alloy pistons |