Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5098610 | Conductive thermoplastic resin composition | Michiya Okamura, Hiroshi Yui, Shuji Hamano, Takeshi Hatakeyama | 1992-03-24 |
| 4873282 | Polyacetal resin composition | Hiroshi Yui, Michiya Okamura, Masakazu Ikeda | 1989-10-10 |