| # | Country | Total Patents | |
|---|---|---|---|
| #1 | African Regional Industrial Property Organization | 1 | |
| #2 | Bulgaria | 1 | |
| #3 | Brazil | 1 | |
| #4 | Canada | 1 | |
| #5 | Czechia | 1 | |
| #6 | EAPO (Eurasian Patent Organization) | 1 | |
| #7 | EPO (European Patent Office) | 1 | |
| #8 | Hungary | 1 | |
| #9 | Indonesia | 1 | |
| #10 | Israel | 1 | |
| #11 | Lithuania | 1 | |
| #12 | Mexico | 1 | |
| #13 | Norway | 1 | |
| #14 | African Intellectual Property Organization | 1 | |
| #15 | Poland | 1 | |
| #16 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Shafts |
| # | Name | Total Patents |
|---|---|---|
| #1 | Yu Dabang | 13 |
| #2 | Yu Daxi | 12 |
| Publication | Filing date | Title |
|---|---|---|
| BG105278A | Rolling bearing | |
| BR9913379A | Purely rolling bearing |