Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5839155 | Continuous flow cleaning system with ozone injection | Edward D. Berglund, Sung Kil CHO | 1998-11-24 |
| 5589080 | Liquid recycling system with moving concentrated counterflow for filter clearance | Sung Kil CHO | 1996-12-31 |
| 4430702 | Network access device | Bruce E. Russo, Edward V. Urness, William C. Hohn | 1984-02-07 |