Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12114124 | Headset | Rongrong Wu, Yong Zheng, Guozhen Ma, Xiansheng Li | 2024-10-08 |
| 10212504 | Earphone device | Kenji Ide, Kazuhisa Kito | 2019-02-19 |
| 9578410 | Sound reproduction device | Noriyuki Ozawa, Osamu Nishida | 2017-02-21 |
| 9451350 | Earphone device | Kenji Ide, Kazuhisa Kito | 2016-09-20 |
| 9385546 | To-be-charged apparatus, charging adapter, electronic apparatus set, and plug unit | Kikuo Wakayama, Tooru Okamura | 2016-07-05 |
| 9361902 | Earhole-wearable sound collection device, signal processing device, and sound collection method | Kohei Asada, Koji Nageno, Shinpei Tsuchiya | 2016-06-07 |
| 9025799 | Sound reproducing device | Noriyuki Ozawa, Kazuhisa Kito, Kohei Asada | 2015-05-05 |
| 8976987 | Sound reproduction device | Noriyuki Ozawa, Osamu Nishida | 2015-03-10 |
| 8325962 | Headphones | Hiroyuki Ishida | 2012-12-04 |
| 8213665 | Headphone | Keitaro Fujiwara, Yuusuke Oosato | 2012-07-03 |
| 7983438 | Headphone device | — | 2011-07-19 |
| 7873177 | Headphone apparatus and headphone system | Toru Okamura, Naoki Watanabe | 2011-01-18 |
| 7853035 | Headphones and headphones placement device | Keitaro Fujiwara | 2010-12-14 |
| 7813522 | Loudspeaker device | Yoshio Ohashi, Masaru Uryu, Takeshi Hara | 2010-10-12 |
| 7609026 | Charging device and charging method | — | 2009-10-27 |
| 7274798 | Speaker device | Yoshio Ohashi, Masaru Uryu, Takeshi Hara | 2007-09-25 |
| 7245736 | Headphone device | Koji Nageno | 2007-07-17 |
| 6744901 | Headphone | Tomohiro Ito, Tomomi Hamada | 2004-06-01 |
| 6738487 | Earphone | Koji Nageno, Hideki Seki, Takashi Ohta | 2004-05-18 |
| 5949896 | Earphone | Koji Nageno, Katsunori Murozaki | 1999-09-07 |