| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Belgium | 2 | |
| #2 | Germany | 2 | |
| #3 | Italy | 2 | |
| #4 | Japan | 2 | |
| #5 | Sweden | 2 | |
| #6 | Austria | 1 | |
| #7 | Brazil | 1 | |
| #8 | France | 1 | |
| #9 | United Kingdom | 1 | |
| #10 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Pistons and sealings | |
| #2 | Cylinders for combustion engines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Promeyrat M J | 2 |
| #2 | Promeyrat Maurice-Jean | 1 |
| #3 | Puromeira Moorisu Jiyaan | 1 |
| #4 | Moorisu Jiyan Puromeira | 1 |
| #5 | Promeyrat Maurice | 1 |
| #6 | Promeyrat Maurice Jean | 1 |
| #7 | Promeyrat J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ATA574479A | Piston for internal combustion engines | |
| BR7903449A | Alternative track | |
| US4313368A | Reciprocating piston | |
| DE2813211A1 | PISTON |