Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6656987 | Polypropylene resin composition and injection molded article | Isao Takashima, Kenichi Ohkawa | 2003-12-02 |
| 5141994 | Crystalline polypropylene and crystalline polypropylene composition | Masahiro Kakugo, Hajime Sadatoshi, Jiro Sakai, Kazuki Wakamatsu, Kazuhiro Chikaishi +2 more | 1992-08-25 |
| 4883842 | Resin composition | Shigeo Tanaka, Jiro Sakai, Kizuku Wakatsuki, Kazuki Wakamatsu | 1989-11-28 |