Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867910 | Electrically conductive ferrofluid composition | Atsushi Yokouchi | 1989-09-19 |
| 4640943 | Surface modifier for inorganic substances | Koichiro Sagawa, Hirofumi Yokota, Masahiro Takehara | 1987-02-03 |