Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12364972 | Vanadium pentoxide-tungsten trioxide catalyst supported on iron ion-exchanged titanium dioxide and method for removing nitrogen oxides using the same | Yong Seok Hong, Ki Hyuck Yang, Thi Phuong Thao Nyguen | 2025-07-22 |
| 5721638 | Wide-angle variable magnification viewfinder | — | 1998-02-24 |
| 5717521 | Super wide-angle variable magnification view finder | — | 1998-02-10 |
| 5596453 | Wide-angle zoom lens | — | 1997-01-21 |