Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10730989 | Method for producing (meth)acrylamide papermaking additive and (meth)acrylamide polymer papermaking additive | Tadaaki Horii, Hirotaka Sato, Takanori Kurihara, Takahiro Fujiwara | 2020-08-04 |
| 9995001 | Acrylamide-based polymer, paper strength agent, and paper | Hirotaka Sato, Tadaaki Horii, Takanori Kurihara, Takahiro Fujiwara | 2018-06-12 |
| 9303361 | Method for producing cationic surface sizing agent, and sizing agent obtained by method | Takuji Sodeyama, Yoko Hayashi | 2016-04-05 |
| 8241462 | Papermaking internal sizing agent and use thereof | Kazunari Sakai, Takahiro Fujiwara, Takashi Yamaguchi, Masaki Ito, Yasunobu Ooka | 2012-08-14 |
| 7988826 | Cationic surface sizing agent and paper coated with the same | Tomohiko Nakata, Yoshiharu Hashiguchi | 2011-08-02 |