Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4970928 | Hammering operation control unit of piano accompanied with automatic performance function | — | 1990-11-20 |
| 4963448 | Photorecording element and liquid crystal cell comprising the same | Kunihiro Ichimura, Yasuzo Suzuki, Takahiro Seki, Masako Sakuragi, Akira Hosoki +1 more | 1990-10-16 |