Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10240295 | Pitch-controlling agent and pitch-controlling method | Yoshihiro Aikawa, Takahiro Fujiwara | 2019-03-26 |
| 9303361 | Method for producing cationic surface sizing agent, and sizing agent obtained by method | Yoko Hayashi, Kazushige Inaoka | 2016-04-05 |