No. | Registration No. | Title of invention | Registration date | Patent holder | Document |
|---|---|---|---|---|---|
| 1 | 10-2449453 | Plating Jig Apparatus with a Simple Marking Function | Sep 27, 2022 | EF Technology Co., Ltd. | |
| 2 | 10-2878394 | Pretreatment Method for Metal Materials That Treats Workpieces Circulating Along a Track Using a Plasma Generator | Oct 24, 2025 | EF Technology Co., Ltd. | |
| 3 | 10-2922025 | Pretreatment Method for Metal Materials Using Plasma | Jan 29, 2026 | EF Technology Co., Ltd. | |
| 4 | 10-2941480 | Pretreatment Method for Metal Materials Using Plasma, in Which Workpieces Are Hung on Hanging Members and Circulated | Mar 16, 2026 | EF Technology Co., Ltd. |