Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9462392 | Speaker device with a magnetic gap filled with magnetic fluid and changing magnetic flux density in axial and circumferential directions | Takahisa Tagami, Emiko Ikeda | 2016-10-04 |
| 8798309 | Speaker device with a magnetic gap filled with magnetic fluid and changing magnetic flux density in axial and circumferential direction | Takahisa Tagami, Emiko Ikeda | 2014-08-05 |