Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8299344 | Key and keyboard apparatus | Ichiro Osuga | 2012-10-30 |
| 8217249 | Acoustic timber for musical instrument | Tatsuya Hiraku | 2012-07-10 |
| 7952011 | Key and keyboard apparatus | Ichiro Osuga | 2011-05-31 |
| 7671260 | Component of musical instrument, musical instrument and production method of the same | Junji Fujii | 2010-03-02 |
| 6838604 | Wooden bars arranged for percussion instruments | Masayuki Kato, Yasumasa Shimizu, Yasuyuki Semba | 2005-01-04 |
| 6667429 | Method for manufacturing modified wood | Junji Fujii | 2003-12-23 |
| 6341914 | Ballpoint pen tip and ballpoint pen using the same | Masahisa Maki | 2002-01-29 |