| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Czechia | 4 | |
| #2 | WIPO (World Intellectual Property Organization) | 3 | |
| #3 | Australia | 1 | |
| #4 | Brazil | 1 | |
| #5 | Canada | 1 | |
| #6 | China | 1 | |
| #7 | EAPO (Eurasian Patent Organization) | 1 | |
| #8 | EPO (European Patent Office) | 1 | |
| #9 | Hungary | 1 | |
| #10 | India | 1 | |
| #11 | Republic of Korea | 1 | |
| #12 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Environmental technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Knob Vaclav | 11 |
| #2 | Knob Václav | 4 |
| #3 | Bolehovsky Ondrej | 3 |
| #4 | Vaclav Knob | 1 |
| #5 | Václav Knob | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CZ304386B6 | Rotary piston internal combustion engine | |
| CZ2012422A3 | Sealing of rotary piston internal combustion engine | |
| CZ2011333A3 | Multicylinder internal combustion engine employing pressure of exhaust gases to increase charging of cylinders | |
| CZ2011259A3 | Cylinder head with ring-shaped valve for internal combustion engine |