| # | Country | Total Patents | |
|---|---|---|---|
| #1 | WIPO (World Intellectual Property Organization) | 6 | |
| #2 | EPO (European Patent Office) | 5 | |
| #3 | United States | 4 | |
| #4 | Republic of Korea | 2 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Environmental technology | |
| #3 | Transport |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ku Yi-Hsin | 8 |
| #2 | Gu Yixin | 5 |
| #3 | Guo Zhenwu | 2 |
| #4 | Ku Yi Hsin | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2020158689A1 | Vibrating structure, bubble removing structure, and ultrasonic liquid concentration detecting device | |
| WO2017152422A1 | Heat-conduction-type concentration detection mechanism and urea-box liquid level sensor | |
| KR20180116395A | Optical density sensor Protection case and optical density measuring device | |
| WO2017139960A1 | Fluid level detection method and apparatus |