Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5371729 | Information recording method | Shizuo Umemura, Kazuo Sanada | 1994-12-06 |
| 5340647 | Optomagnetic recording medium | Satoshi Matsubaguchi, Takashi Yamada | 1994-08-23 |
RY
Ryoichi Yamamoto
Overall (1994): #20,643 of 165,921Top 15%
2
Patents 1994