Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4708902 | Polyester films suitable for use in magnetic recording media | Shigeo Utsumi, Tateo Kanesaki, Takashi Kagiyama, Satoshi Otonari, Koichiro Ikushima | 1987-11-24 |
| 4525420 | Polyurethane elastic yarns and their production | Fusao Imai | 1985-06-25 |