Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9924250 | Sound-transmitting structure, sound-transmitting membrane, and waterproof case | — | 2018-03-20 |
| 9877094 | Waterproof sound-permeable membrane and electronic device | Toshimitsu Tachibana | 2018-01-23 |