Issued Patents 2017
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9787319 | Signal modulation circuit | Tsuyoshi Kawaguchi, Mamoru Sekiya | 2017-10-10 |
| 9762197 | Music reproducing device with active control ground mode | Kei Asao, Tsuyoshi Kawaguchi, Makoto Yoshida, Takanori Shiozaki, 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, Takanori Shiozaki, Hiroyuki Asahara +1 more | 2017-07-18 |
| 9590654 | Signal modulation circuit | Tsuyoshi Kawaguchi, Mamoru Sekiya | 2017-03-07 |