Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4465615 | Electroconductive resin composition and a videodisc record | Akio Hata, Noriki Fujii | 1984-08-14 |
| 4396660 | Electroconductive resin composition and a videodisc record | Akio Hata, Noriki Fujii | 1983-08-02 |