Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8913772 | Ear speaker device | Makoto Yamagishi, Satoshi Suzuki | 2014-12-16 |
| 8538059 | Ear speaker device | Makoto Yamagishi, Hideki Seki, Noriyuki Hiyama, Takeshi Hara | 2013-09-17 |
| 8175316 | Ear speaker device | Makoto Yamagishi, Hideki Seki, Noriyuki Hiyama, Takeshi Hara | 2012-05-08 |
| 7671919 | Camera | Keiichi Iwasaki, Kiyoshi Nakagawa | 2010-03-02 |
| 5323257 | Microphone and microphone system | Kensaku Abe, Kousuke Nakanishi | 1994-06-21 |
| 5159188 | Optical reception apparatus using prism having caldera-shaped concave portion | Kensaku Abe, Nobuo Kobayashi | 1992-10-27 |