Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12101890 | Method of manufacturing printed circuit board | Myung Ju GI | 2024-09-24 |
| 6672084 | Energy saving refrigeration system using composition control with mixed refrigerants | Cheolho Bai | 2004-01-06 |
| 6494935 | Vortex generator | Cheolho Bai | 2002-12-17 |
| 6449964 | Regenerative refrigeration system with mixed refrigerants | Cheolho Bai | 2002-09-17 |
| 6430937 | Vortex generator to recover performance loss of a refrigeration system | Cheolho Bai | 2002-08-13 |
| 6425249 | High efficiency refrigeration system | Cheolho Bai | 2002-07-30 |
| 6389818 | Method and apparatus for increasing the efficiency of a refrigeration system | Cheolho Bai | 2002-05-21 |
| 6293108 | Regenerative refrigeration system with mixed refrigerants | Cheolho Bai | 2001-09-25 |
| 6250086 | High efficiency refrigeration system | Cheolho Bai | 2001-06-26 |