Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6290811 | Method for recycling of old corrugated container using flotation and kneading treatment | Jeong Yong Ryu, Kyoung Rak Ji, Jong-Ho Shin | 2001-09-18 |
| 6093282 | Method for recycling of old corrugated container using flotation and enzymatic hydrolysis | Jeong Yong Ryu, Kyoung Rak Ji, Jong-Ho Shin | 2000-07-25 |
| 5717046 | Retention aids for papermaking | Jong-Ho Shin, Sin Ho Han | 1998-02-10 |