Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9762197 | Music reproducing device with active control ground mode | Kei Asao, Tsuyoshi Kawaguchi, Makoto Yoshida, Yoshinori Nakanishi, Hiroyuki Asahara +1 more | 2017-09-12 |
| 9712919 | Music reproducing device with first and second D/A converters for converting audio signals prior to inversion | Kei Asao, Tsuyoshi Kawaguchi, Makoto Yoshida, Yoshinori Nakanishi, Hiroyuki Asahara +1 more | 2017-07-18 |