Issued Patents 2021
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11019443 | Speaker diaphragm including cone formed of material including fibers derived from plant and resin, speaker unit, speaker, and method for manufacturing speaker | Hisashi Koike, Nobutaka Urano, Tsukasa OTA | 2021-05-25 |