Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6239336 | Music box having an improved, rigid base frame | Katsuhiko Hayashi | 2001-05-29 |
| 5949004 | Compact music box | Shinroku Asakawa | 1999-09-07 |
| 5877439 | Music box | Shinroku Asakawa, Junichi TAKEMURA, Motonori Usui | 1999-03-02 |
| 5528096 | Small brush-use DC motor | Katsuhiko Hayashi | 1996-06-18 |
| 5483849 | Governor with pulley | Teruaki Imai | 1996-01-16 |
| 5411428 | Block units for a block toy | Katsuhiko Hayashi | 1995-05-02 |
| 5309942 | Timer unit for controlling valves | Hiroyuki Iwasita | 1994-05-10 |
| 5264656 | Electronic sound generating device | Tadayuki Itakura, Mutsumi Aruga, Masaki Yamamoto, Shigeyoshi Takagi | 1993-11-23 |
| 5048151 | Mechanical door check | Katsuhiko Hayashi, Teruaki Imai | 1991-09-17 |
| 4984666 | Speed governor for toilet or the like | Hiroyuki Iwashita | 1991-01-15 |
| 4912806 | Door check | Katsuhiko Hayashi | 1990-04-03 |
| 4702350 | Spring drive device | Katsuhiko Hayashi | 1987-10-27 |
| 4616737 | Buffer device | — | 1986-10-14 |
| 4343221 | Acoustic sound generating device | Fumito Komatsu | 1982-08-10 |