| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 4 | |
| #2 | EPO (European Patent Office) | 3 | |
| #3 | WIPO (World Intellectual Property Organization) | 3 | |
| #4 | China | 2 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Semiconductors | |
| #3 | Measurement | |
| #4 | Surface technology and coating | |
| #5 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Pistons and sealings | |
| #2 | Semiconductor devices | |
| #3 | Pipes | |
| #4 | Testing of structures | |
| #5 | Coating metallic material | |
| #6 | Gearing | |
| #7 | Marine propulsion |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rhee Hee Jang | 11 |
| #2 | Rhee Hee-Jang | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CN111801522A | Rotary motion sealing device | |
| WO2019160223A1 | Linear motion rotary union | |
| WO2016108591A1 | Sealing device for drive shaft | |
| EP3133322A1 | Sealing system having leakage sensing function |