Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9543099 | Direct current relay | — | 2017-01-10 |
| 9452455 | Cleaning device for contamination of contact of electromagnetic contactor | Hyun Woo Joo | 2016-09-27 |
| 9384927 | Electric vehicle relay | — | 2016-07-05 |
| 9117605 | DC power relay | Hyun Woo Joo | 2015-08-25 |