Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11582557 | Speaker diaphragm, speaker, speaker diaphragm manufacturing method, electronic device, and mobile body apparatus | Tetsuya KOYANAGI, Tetsushi Itano, Kazuaki Nishimura, Ryouichi Uemoto, Hiroki Sano | 2023-02-14 |
| 10484794 | Loudspeaker diaphragm, loudspeaker, and production method for loudspeaker diaphragm | Tetsushi Itano, Seiji Takagi, Kenji Endou, Kazuaki Nishimura | 2019-11-19 |