Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9980041 | Acoustic system | Masakazu Kiyama, Takehisa Okamoto | 2018-05-22 |
| 9467760 | Microphone device, microphone unit, microphone structure, and electronic equipment using these | Takayuki Sano | 2016-10-11 |
| 9218800 | Sound transmission material, sound control plane structure including building use using the sound transmission material, windscreen for microphone, protective grille, sound transmission projection screen, and speaker | Takayuki Sano | 2015-12-22 |
| 7130428 | Picked-up-sound recording method and apparatus | Toru Hirai, Yasushi Shimizu, Yoshikazu Honji, Masahiro Ikeda, Mikio Tohyama | 2006-10-31 |
| 6888058 | Electronic musical instrument | Tomomitsu Urai, Shinichi Sawara | 2005-05-03 |
| 6828497 | Electronic keyboard instrument and tone reproduction method therefor | Koji Yataka, Tomomitsu Urai, Akira Miki, Shinichi Sawara | 2004-12-07 |
| 6696633 | Electronic tone generating apparatus and signal-processing-characteristic adjusting method | Satoshi Miyagishima, Shinichi Sawara, Akira Miki, Yasutake Suzuki, Takeo Shibukawa | 2004-02-24 |
| 6157724 | Apparatus having loudspeakers concurrently producing music sound and reflection sound | — | 2000-12-05 |
| 5700052 | Chair for an acoustically designed building | Ryokichi Yamazaki, Takeshi Sakai | 1997-12-23 |
| 5642425 | Sound field control device | — | 1997-06-24 |
| 5392381 | Acoustic analysis device and a frequency conversion device used therefor | Hiroshi Furuya, Yasushi Shimizu | 1995-02-21 |
| 5131051 | Method and apparatus for controlling the sound field in auditoriums | Shinji Kishinaga, Yasushi Shimizu | 1992-07-14 |
| 5025472 | Reverberation imparting device | Yasushi Shimizu | 1991-06-18 |
| 4389892 | Reverberation characteristics measuring device | Koji Niimi | 1983-06-28 |