Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11277684 | Diffuser | Mitsuhiko Tokuda, Yoshinori Nakanishi, Ryuta Shigematsu, Koichi Sadaie, Yoshitada TAKESHIMA | 2022-03-15 |
| 10243516 | Audio amplifier and audio power amplifier | Tsuyoshi Kawaguchi, Takuya Oka | 2019-03-26 |
| 10149053 | Signal processing device, signal processing method, and speaker device | Hiroki KUROSAKI, Tsuyoshi Kawaguchi, Yoshinori Nakanishi, Hiroyuki Asahara | 2018-12-04 |
| 9762197 | Music reproducing device with active control ground mode | Kei Asao, Tsuyoshi Kawaguchi, Makoto Yoshida, Takanori Shiozaki, Yoshinori Nakanishi +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, Yoshinori Nakanishi +1 more | 2017-07-18 |
| 8552802 | Amplifying circuit and current-voltage conversion circuit | Tsuyoshi Kawaguchi, Mamoru Sekiya, Naofumi Shimasaki, Yu TAKEHARA | 2013-10-08 |
| 8310307 | Amplifying circuit | Tsuyoshi Kawaguchi, Mamoru Sekiya, Yu TAKEHARA | 2012-11-13 |
| 7773373 | Vibration-damping structure for audio apparatus | Tsuyoshi Morohashi, Mamoru Sekiya, Norio Etoh | 2010-08-10 |