Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4533711 | Polybutadiene rubber compositions having improved green strength | Yasumasa Takeuchi, Mitsuhiko Sakakibara, Nobuo Tagata, Masaki Ogawa, Yasushi Hirata | 1985-08-06 |
| 4515922 | Rubber compositions | Mitsuhiko Sakakibara, Masao Yoshizawa, Masaki Ogawa, Yasushi Hirata | 1985-05-07 |
| 4468496 | Polybutadiene rubber compositions | Yasumasa Takeuchi, Mitsuhiko Sakakibara, Nobuo Tagata, Masaki Ogawa, Yasushi Hirata | 1984-08-28 |
| 4433107 | Polyisoprene rubber compositions | Yasumasa Takeuchi, Mitsuhiko Sakakibara, Nobuo Tagata, Masaki Ogawa, Yasushi Hirata | 1984-02-21 |