| # | Country | Total Patents | |
|---|---|---|---|
| #1 | China | 3 | |
| #2 | EPO (European Patent Office) | 3 | |
| #3 | WIPO (World Intellectual Property Organization) | 3 | |
| #4 | Republic of Korea | 2 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Machine tools | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Cylinders for combustion engines | |
| #2 | Cooling of machines | |
| #3 | Metal-working | |
| #4 | Special machines | |
| #5 | Pistons and sealings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rönnskog Tommy | 5 |
| #2 | Pisilä Sakari | 5 |
| #3 | Pisilae Sakari | 4 |
| #4 | Roennskog Tommy | 4 |
| #5 | Pisila Sakari | 3 |
| #6 | Ronnskog Tommy | 3 |
| Publication | Filing date | Title |
|---|---|---|
| CN104813014A | A piston for an internal combustion engine | |
| EP2855907A1 | Piston for internal combustion engine | |
| KR20140125369A | Piston for large sized internal combustion engine |