Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10149059 | Speaker device and microphone device | — | 2018-12-04 |
| 10034090 | Audio control device | Minoru Matsuyama, Masashi Saito | 2018-07-24 |
| 5163256 | Elasto-plastic damper for structure | Toshiyuki Fukumoto, Eiji Fukuzawa, Toshikazu Yamada, Naoki Tanaka, Akihiko Amana | 1992-11-17 |
| 5063719 | Column base structure | Hideshige Matsuo, Isamu Yamamoto, Osamu Narishige, Michio Itoh, Kuniaki Sato +3 more | 1991-11-12 |
| D254332 | Lens for a lamp | Koji Nakano | 1980-02-26 |