| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 5 | |
| #2 | Taiwan | 4 | |
| #3 | WIPO (World Intellectual Property Organization) | 4 | |
| #4 | Republic of Korea | 3 | |
| #5 | United States | 2 | |
| #6 | China | 1 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Loudspeakers and microphones |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hosaka Akihiko | 17 |
| #2 | Watanabe Yoshiyuki | 14 |
| #3 | Watabe Yoshiyuki | 5 |
| Publication | Filing date | Title |
|---|---|---|
| JP2018121263A | Earphone and headphone | |
| JP2018007220A | Tweeter unit and earphone | |
| TW201644284A | Speakers and earphones | |
| JP2016225857A | Speaker | |
| JP2016225855A | Speaker | |
| JP2016213771A | Speaker unit |