Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6069965 | Loudspeaker | Kazue Satoh, Mikio Iwasa, Tohru Kikkawa | 2000-05-30 |
| 5862242 | Speaker | Akihiro Furuta, Kazue Satoh, Mikio Iwasa, Kuniaki Sakai | 1999-01-19 |
| 5664024 | Loudspeaker | Akihiro Furuta, Kazue Satoh, Mikio Iwasa, Shinya Mizone, Kuniaki Sakai | 1997-09-02 |
| 5512715 | Sound absorber | Yutaka Torii | 1996-04-30 |
| 5150418 | Speaker system | Kazuki Honda, Shuji Saiki, Kazue Satoh | 1992-09-22 |
| 5073946 | Thin speaker having an enclosure with an open portion and a closed portion | Katsuaki Satoh, Kazue Sato, Kousaku Murata, Tsuneo Tanaka, Shuji Saiki +6 more | 1991-12-17 |
| 5025474 | Speaker system with image projection screen | Tsuneo Tanaka, Kazue Sato, Akira Kurozuka, Tadashi Tamura, Katsuji Hattori +6 more | 1991-06-18 |
| 4899390 | Thin speaker having an enclosure within an open portion and a closed portion | Mitsuhiko Serikawa, Seiichi Ishikawa, Sawako Usuki, Yoichi Kimura, Shuichi Obata | 1990-02-06 |
| 4803242 | Diaphragm for loudspeakers | Kousaku Murata, Satoshi Takayama, Shuji Saiki, Tsuneo Tanaka | 1989-02-07 |
| 4751739 | Apparatus and method for controlling tone quality | Mitsuhiko Serikawa, Akihisa Kawamura, Katsuaki Sato | 1988-06-14 |
| 4484383 | Method of manufacturing a speaker diaphragm | Katsuaki Satoh, Seiichi Ishikawa | 1984-11-27 |
| 4353432 | Electro-dynamic speaker | Mitsuhiro Hasegawa, Hiroshi Yamamoto | 1982-10-12 |