Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5636286 | Active noise reduction device for electronic apparatus | Eiji Makabe, Tsutomu Hoshino, Atsushi Yamaguchi | 1997-06-03 |
| 5602926 | Method and apparatus of determining the sound transfer characteristic of an active noise control system | Kensaku Fujii, Juro Ohga | 1997-02-11 |
| 5583943 | Active noise control system with detouring sound apparatus | Tsutomu Hoshino, Atsushi Yamaguchi | 1996-12-10 |
| 5544201 | Signal suppressing apparatus | Tsutomu Hoshino, Atsushi Yamaguchi, Juro Ohga, Hiroyuki Furuya | 1996-08-06 |
| 5178727 | Ceramic membrane device and a method of producing the same | Eiichi Toya, Yukio Itoh, Masayuki Sumiya | 1993-01-12 |
| 5074017 | Susceptor | Eiichi Toya, Yukio Itoh, Masayuki Sumiya, Yasumi Sasaki | 1991-12-24 |