Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835216 | Conjugated diene series rubber compositions | Akihiko Morikawa, Fumio Tsutsumi, Noboru Oshima, Tatsuro Hamada, Hiromi Fukuoka +2 more | 1989-05-30 |
| 4824908 | Butadiene-based rubber composition | Fumio Tsutsumi, Noboru Shimada, Yoshihisa Fujinaga, Noboru Oshima, Tatsuro Hamada +1 more | 1989-04-25 |
| 4810746 | Rubber composition for use in vibration insulating material | Fumio Tsutsumi, Makoto Kondo, Masaru Oda, Masaki Ogawa, Akira Tsuchikura +1 more | 1989-03-07 |