Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11371624 | Flow-blocking safety valve to prevent explosion of portable gas container | — | 2022-06-28 |
| 9840362 | Cap for gas vessel having separable gas exhaust unit | — | 2017-12-12 |
| 9453612 | Safety valve to release excess pressure from portable gas container for prevention of explosion | — | 2016-09-27 |
| 8453889 | Spout cap having two steps type straw part | — | 2013-06-04 |
| 5787917 | Automatic earthquake gas shut-off system | Il Yeul Lee | 1998-08-04 |