| # | Country | Total Patents | |
|---|---|---|---|
| #1 | China | 4 | |
| #2 | EPO (European Patent Office) | 4 | |
| #3 | Brazil | 3 | |
| #4 | Republic of Korea | 3 | |
| #5 | Slovakia | 3 | |
| #6 | United States | 3 | |
| #7 | WIPO (World Intellectual Property Organization) | 3 | |
| #8 | EAPO (Eurasian Patent Organization) | 2 | |
| #9 | Hong Kong | 2 | |
| #10 | Russian Federation | 2 | |
| #11 | African Regional Industrial Property Organization | 1 | |
| #12 | Australia | 1 | |
| #13 | Canada | 1 | |
| #14 | Hungary | 1 | |
| #15 | Israel | 1 | |
| #16 | Japan | 1 | |
| #17 | Montenegro | 1 | |
| #18 | Mexico | 1 | |
| #19 | New Zealand | 1 | |
| #20 | Serbia | 1 | |
| #21 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Aeroplanes | |
| #2 | Convertible vehicles | |
| #3 | Climate change mitigation in transportation | |
| #4 | Cross-cutting vehicle technologies | |
| #5 | Motor vehicles | |
| #6 | Parachutes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Klein Stefan | 30 |
| #2 | Stefan Klein | 5 |
| #3 | Klein Štefan | 3 |
| #4 | Klein S̆Tefan | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CN107107690A | Central wing plate and its control method for flight formula delivery vehicle | |
| US2017297605A1 | A directional control system for a hybrid air and ground transportation vehicle | |
| SK500582014A3 | Center of the flying vehicle and its control | |
| SK500592014A3 | System and method of controlling the direction of the hybrid vehicle for air and land | |
| SK50392011A3 | Method of transformation of hybrid vehicles for land and air and hybrid vehicle |