Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4910257 | Polyethylene resin composition | Akira Sano, Motohiko Yoshizumi, Hiroki Hirata, Kazuo Mtsuura | 1990-03-20 |
| 4900790 | Polyethylene resin composition | Akira Sano, Motohiko Yoshizumi, Hiroki Hirata, Kazuo Matsuura | 1990-02-13 |