Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12163204 | Method for producing aqueous solution containing nickel, cobalt and manganese | Heon Sik CHOI, Yun Birm Choi, James Choi | 2024-12-10 |
| 11926882 | Method for producing aqueous solution containing nickel or cobalt | Heon Sik CHOI, Jae-Hoon Joo | 2024-03-12 |
| 10753233 | Flow guide structure for casing flange, and casing and turbomachine having the same | Gi Won Hong | 2020-08-25 |
| 9825325 | Rechargeable battery | Yun-Woong Kim, Soon Chul Byun, Young-Chang Kim | 2017-11-21 |
| D740343 | Multimedia projector | — | 2015-10-06 |
| 6669894 | Roaster with stabilized fluidized bed for roasting zinc concentrate | Young-Gae Chun | 2003-12-30 |
| 6461489 | Cathode plate for electro winning and refining | — | 2002-10-08 |