Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6255400 | Polymer and applications thereof | Hiroshi Itoh, Susumu Oyama, Takashi Yodoya, Kenji Tsuboi, Kenichi Nakamura +4 more | 2001-07-03 |
| 5942573 | Acrylamide polymers and use thereof | Hirotoshi Doki, Hitoshi Ishigaki, Toshiki Oyanagi, Shigeo Watanabe | 1999-08-24 |
| 5627249 | Acrylamide polymers and use thereof | Hirotoshi Doki, Hitoshi Ishigaki, Toshiki Oyanagi, Shigeo Watanabe | 1997-05-06 |
| 5587246 | Water-resistant surface coating formulations and paper coated therewith | Haruki Tsutsumi, Yoshiaki Ikemoto, Mitsuhiro Maehama, Toshiki Oyanagi | 1996-12-24 |
| 5489626 | Admixture for hydraulic cement | Toshihiko Takaki, Kenji Tsuboi, Atsushi Ito, Shouichi Araseki | 1996-02-06 |
| 5470918 | Water-resistant surface coating formulations and paper coated therewith | Haruki Tsutumi, Yoshiaki Ikemoto, Mitsuhiro Maehama, Toshiki Oyanagi | 1995-11-28 |