Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4455411 | Process for preparing acrylamide polymers | Ryoji Handa, Jun Hosoda, Kenzo Ariyama, Osamu Okushima | 1984-06-19 |
| 4306045 | Process for producing acrylamide polymers | Norimasa Yoshida, Yasuo Ogawa, Ryoji Handa, Jun Hosoda, Akihisa Furuno | 1981-12-15 |
| 4306048 | Method for preparing acrylamide polymers | Norimasa Yoshida, Yasuo Ogawa, Ryoji Handa, Susumu Seki, Jun Hosoda +1 more | 1981-12-15 |