Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4997539 | Method and apparatus for producing a magnetic recording medium | Masatoshi Ichikawa, Takeshi Sakuma, Fumiaki Yokoyama, Yukio Yamaguchi | 1991-03-05 |
| 4410747 | Process for producing 1,2-dichloroethane | Tsunekazu Akiyama, Tetsuaki Kihara, Hiroshi Kameo | 1983-10-18 |