Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5415941 | Magnetic recording medium comprising magnetic particles and a specified polyurethane resin | Haruhiko Narusawa, Takeshi Yatsuka | 1995-05-16 |
| 5278275 | Polyurethane resin composition | Takeshi Yatsuka, Haruo Asai, Haruhiko Narusawa, Hiroshi Fujimoto | 1994-01-11 |