Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9304109 | Magnetizing apparatus for magnetic particle testing of a wheel using a conductor and auxiliary conductors for magnetization | Takashi Mochii, Michitaka Hori | 2016-04-05 |
| 8460798 | Wood member for musical instrument and method of manufacturing the same, as well as soundboard manufacturing system and method | Yutaka Hagiwara | 2013-06-11 |
| 7265283 | String-striking device for piano | Mitsuo Yamashita | 2007-09-04 |
| 7193147 | String-striking device for piano | — | 2007-03-20 |
| 7145062 | String-striking device of piano | — | 2006-12-05 |
| 7057101 | Action | — | 2006-06-06 |
| 6211450 | Antibacterial keyboard | — | 2001-04-03 |
| 6162980 | Electronic upright piano and a method of manufacture thereof | Riichi Kitashima, Masaji Kimura, Shinichiro Miwa | 2000-12-19 |
| 6087574 | Electronic piano | Riichi Kitashima, Makoto Nakayama | 2000-07-11 |
| 5932821 | Hammer head for piano and method of manufacturing same | Riichi Kitajima | 1999-08-03 |
| 5918296 | Closing control device for fallboard | Tatsuo Furukawa | 1999-06-29 |
| 5898117 | Antibacterial keyboard | — | 1999-04-27 |
| 5299484 | Bearing structure and transmission structure in piano | Mituo Yamashita, Masanari Onishi, Masahiro Tanaka | 1994-04-05 |
| 5223652 | Key and keyboard | Mituo Yamashita, Masanari Onishi, Masahiro Tanaka | 1993-06-29 |
| 4970929 | Muffler for pianos | — | 1990-11-20 |
| 4840104 | Keyboard | Mithuo Yamashita, Masanari Onishi, Masahiro Tanaka | 1989-06-20 |