| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Brazil | 1 | |
| #2 | German Democratic Republic | 1 | |
| #3 | Denmark | 1 | |
| #4 | EPO (European Patent Office) | 1 | |
| #5 | Spain | 1 | |
| #6 | Greece | 1 | |
| #7 | Hungary | 1 | |
| #8 | India | 1 | |
| #9 | Poland | 1 | |
| #10 | Romania | 1 | |
| #11 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Electrical vehicle propulsion |
| # | Name | Total Patents |
|---|---|---|
| #1 | Stoilov Ivan Trifonov | 5 |
| #2 | Russev Koytcho Yankov | 4 |
| #3 | Paltchin Vassil Assenov | 4 |
| #4 | Gaydarov Emanuil Stefanov | 4 |
| #5 | Russev Koytcho Y | 3 |
| #6 | Paltchin Vassil A | 2 |
| #7 | Stoilov Ivan T | 2 |
| #8 | Gaydarov Emanuil S | 2 |
| #9 | Emanoil Stefanov Gaydarov | 1 |
| #10 | Ivan Stoilov Trifonov | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DD264341A7 | Saddle | |
| GR860098B | Trolleybus current collector system |