Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8891799 | Earphone | Takashi Fujikura | 2014-11-18 |
| 8265327 | Ear piece and earphone | — | 2012-09-11 |
| 5189508 | Silicon wafer excelling in gettering ability and method for production thereof | Masaharu Tachimori, Hideo Araki | 1993-02-23 |