Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9212237 | N-vinyl lactam polymer and method for producing same | Kazuhiro Okamura | 2015-12-15 |
| 7951886 | Continuous production method of water-soluble polymer and water-soluble polymer | Noboru Sakamoto, Takahiro Tsumori, Atsuro Yoneda, Kaori Nakatani, Hideo Wakami | 2011-05-31 |