| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Electrical machinery and energy | |
| #3 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Shafts | |
| #2 | Dynamo-electric machines | |
| #3 | Special information storage |
| # | Name | Total Patents |
|---|---|---|
| #1 | Yu Chang Jo | 13 |
| #2 | Kim Duck Young | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2011101807A1 | Hydrodynamic bearing assembly and motor having the same |