Issued Patents 2020
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10834846 | Ultraviolet ray treatment apparatus | Yuji Yamakoshi, Arata Ishii | 2020-11-10 |
| 10751832 | Optical non-destructive inspection method and optical non-destructive inspection apparatus | Naoki Matsumoto, Ryota Umezawa, Daisuke Kuroda | 2020-08-25 |
| 10645510 | Manufacturing method of a speaker vibrating diaphragm by controlling a ratio of fiber materials | — | 2020-05-05 |
| 10587955 | Speaker vibrating member and method of making the same | — | 2020-03-10 |