Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4604441 | Polypropylene sheet | Ryuhei Ueeda, Hiroshi Narukawa | 1986-08-05 |
| 4560715 | Mica flake mass and resin composition with the same incorporated therein | Ryuhei Ueeda, Akira Kubotsu, Shunji Kaneda, Kenji Okuno | 1985-12-24 |
| 4555439 | Tough thermoplastic resin sheet-like material | Ryuhei Ueeda, Hiroshi Narukawa | 1985-11-26 |
| 4412103 | Diaphragm for an electro-acoustic transducer | Kotaro Ikeda, Kenji Okuno, Koichi Saito, Osamu Ohara | 1983-10-25 |