Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8088254 | Methods for producing recycled pulp, methods for modifying pulp fiber surfaces and dirts, as well as pulp processing equipments | Shisei Goto, Keigo Watanabe, Hiromichi Tsuji | 2012-01-03 |
| 7727355 | Methods for producing recycled pulp and methods for modifying pulp fiber surfaces using liquid jet cavitation | Shisei Goto, Keigo Watanabe, Hiromichi Tsuji | 2010-06-01 |
| 7384502 | Process for impregnating, refining, and bleaching wood chips having low bleachability to prepare mechanical pulps having high brightness | Yasuyuki Kamijo, Isao Onodera, Keigo Watanabe | 2008-06-10 |