Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12363407 | Camera module and optical device | — | 2025-07-15 |
| 11991432 | Camera module and optical device | — | 2024-05-21 |
| 6924387 | Solid catalyst with core-shell catalytic phase and a method of preparation thereof | Tae Sun Chang, Deug-Hee Cho, Dong Koo Lee, Guijia Li | 2005-08-02 |
| 6295787 | Insulated outer structure for refrigerated food storage apparatus and foam injection method using the same | — | 2001-10-02 |
| 6063420 | Method for controlling operation of kimchi refrigerator | Hak Gyu Chun | 2000-05-16 |
| 6013800 | Solid catalyst for preparing nitriles and its preparation | Chae-Ho Shin, Tae Sun Chang, Deug-Hee Cho, Dong-Ku Lee | 2000-01-11 |
| 5786478 | Process for preparing cyanopyrazine | Chae-Ho Shin, Tae Sun Chang, Dong-Ku Lee, Deug-Hee Cho | 1998-07-28 |
| D349126 | Image transfer unit for a video camera | — | 1994-07-26 |
| 5210292 | Process for preparing polymer grade terephthalic acid | Sang F. Park, Tae Sun Chang, Kyu Wook Choi | 1993-05-11 |
| 4966970 | Process for manufacturing pyrazines | Sang-Eon Park, Young Seog KWON | 1990-10-30 |