Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873282 | Polyacetal resin composition | Hiroshi Yui, Masakazu Ikeda, Norio Matsuo | 1989-10-10 |
| 4841516 | Turntable for mounting recording medium in disk form | Michio Ohmori, Hiroshi Yui | 1989-06-20 |