Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6255400 | Polymer and applications thereof | Hiroshi Itoh, Susumu Oyama, Takashi Yodoya, Kenji Tsuboi, Tsugio Matsubara +4 more | 2001-07-03 |
| 5942573 | Acrylamide polymers and use thereof | Hitoshi Ishigaki, Toshiki Oyanagi, Tsugio Matsubara, Shigeo Watanabe | 1999-08-24 |
| 5627249 | Acrylamide polymers and use thereof | Hitoshi Ishigaki, Toshiki Oyanagi, Tsugio Matsubara, Shigeo Watanabe | 1997-05-06 |