Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11220764 | Stretchable sheet and method for producing the same | Masaru Ueno, Yasuhiro Ishikura | 2022-01-11 |
| 10745830 | Stretchable sheet and method for producing the same | Masaru Ueno, Yasuhiro Ishikura | 2020-08-18 |
| 10446121 | Action of grand piano | — | 2019-10-15 |
| 10170086 | Support device for pivotal member of keyboard instrument and method of manufacturing the same | — | 2019-01-01 |