Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12421462 | Lube base oil manufacturing process utilizing refined oil fraction of waste lubricant, and lube base oil manufactured thereby | Jun Soo Park, Eun Kyoung Kim, Kyung Seok Noh | 2025-09-23 |
| 12227705 | Process of producing high-quality lube base oil by using refined oil fraction of waste lubricant | Jin Hee Ok, Kyung Seok Noh, Do Woan Kim | 2025-02-18 |
| 11873456 | Process of producing high-quality lube base oil by using refined oil fraction of waste lubricant | Jin Hee Ok, Kyung Seok Noh, Do Woan Kim | 2024-01-16 |
| 10780356 | Music game apparatus and method, and computer-readable recording medium recording program therefor | — | 2020-09-22 |