Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4771105 | Water-absorbent resin and process for producing the same | Hideharu Shirai, Fumito Yamai, Setsuo Inada, Hisashi Ike | 1988-09-13 |
| 4626183 | Apparatus for producing thermoplastic resin foam | Hideharu Shirai | 1986-12-02 |