Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6433130 | Process for preparing polymer by using copper compound | Koichi Shibayama | 2002-08-13 |
| 5543438 | Plastic foam material composed of a polyolefin based resin composition and method for making same | Kouichi Shibayama, Masao Suzuki, Kenji Iuchi | 1996-08-06 |
| 5432009 | Film for first-aid sticking plaster | Hironori Tabata, Kiyomi Uenomachi, Hideshi Matsumoto | 1995-07-11 |
| 5304580 | Expandable polyolefin resin compositions | Koichi Shibayama, Toshihiro Arai, Eiichi Takahashi | 1994-04-19 |
| 4490520 | Process for preparing impact-resistant polyamides | Masao Nishiyama, Kaoru Ohtsuki | 1984-12-25 |