Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5989391 | Reaction product of sulfonated amino resin and amino group-containing substance and papermaking process | Yoshitane Watanabe, Kiyomi Ema, Takaichi Sugiyama, Michie Kaneko | 1999-11-23 |