Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5657802 | One touch opening plug for aquarium fish food containers | — | 1997-08-19 |
| 5621162 | Gas sensor for detecting gases generated from food products | Dong H. Yun, Chul Han Kwon, Kyuchung Lee, Hyeon Soo Park, Hyung-Ki Hong +1 more | 1997-04-15 |
| 5609096 | Vegetable freshness keeping device having a sensor | Chul H. Kwon, Hyung-Ki Hong, Kyu Cheol Lee, Dong H. Yun, Hyun Woo Shin +1 more | 1997-03-11 |