Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10964296 | Board for stringed instrument, acoustic stringed instrument, and method of manufacturing board for stringed instrument | Toshihisa Yamazaki, Hiroshi Nakaya, Kenichi Miyazawa | 2021-03-30 |
| 10789915 | Acoustic string instrument, and methods for manufacturing and repairing same | Toshihisa Yamazaki, Yoshiro Yamauchi, Akio Matsushima, Hiroshi Nakaya | 2020-09-29 |
| 10453433 | Tone bar woody material, tone bar percussion instrument, and production method of tone bar woody material | Eri HIRAI, Tatsuya Hiraku | 2019-10-22 |
| 10224010 | Woody material for wind instrument, wind instrument, and production method of woody material for wind instrument | Kazushi Nakai, Tatsuya Hiraku | 2019-03-05 |
| 9666168 | Board for stringed instrument, method of manufacturing board for stringed instrument, and stringed instrument | Toshihisa Yamazaki, Tatsuya Hiraku, Hiroshi Nakaya, Kenichi Miyazawa | 2017-05-30 |
| 9406285 | Board for stringed instrument, method of manufacturing board for stringed instrument, and stringed instrument | Toshihisa Yamazaki, Tatsuya Hiraku, Hiroshi Nakaya, Kenichi Miyazawa | 2016-08-02 |