Issued Patents All Time
Showing 51–68 of 68 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6856691 | Electronic apparatus including loudspeaker system | Sawako Usuki, Tetsuo Murakami | 2005-02-15 |
| 6836551 | Loudspeaker | Mitsukazu Kuze, Hiroyuki Takewa, Satoshi Koura | 2004-12-28 |
| 6700987 | Loudspeaker | Mitsukazu Kuze, Hiroyuki Takewa | 2004-03-02 |
| 6671383 | Electromagnetic transducer and portable communication device | Sawako Usuki | 2003-12-30 |
| 6658133 | Electromagnetic transducer and portable communicating device | Sawako Usuki | 2003-12-02 |
| 6600400 | Electromagnetic electro-acoustic transducer | Kimihiro Andou, Mitsutaka Enomoto, Masaki Suzumura, Katsuhiko Minaga, Sawako Usuki | 2003-07-29 |
| 6259935 | Electro-mechanical-acoustic transducing device | Kazue Sato, Sawako Usuki, Mitsukazu Kuze | 2001-07-10 |
| 6208237 | Electro-mechanical and acoustic transducer for portable terminal unit | Sawako Usuki, Mitsukazu Kuze | 2001-03-27 |
| 5430260 | Speaker system | Satoshi Koura, Kazue Satoh | 1995-07-04 |
| 5371805 | Speaker and speaker system employing the same | Kazuki Honda, Satoshi Koura | 1994-12-06 |
| 5325435 | Sound field offset device | Toshihiko Date, Kazuki Honda | 1994-06-28 |
| 5150418 | Speaker system | Kazuki Honda, Hiroyuki Takewa, 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, Satoshi Takayama +6 more | 1991-12-17 |
| 4924962 | Sound reproducing apparatus for use in vehicle | Kenichi Terai, Kousaku Murata, Katsuaki Satoh, Yoichi Kumura, Yasutoshi Nakama +2 more | 1990-05-15 |
| 4893695 | Speaker system | Tadashi Tamura, Kazue Sato | 1990-01-16 |
| 4803242 | Diaphragm for loudspeakers | Kousaku Murata, Satoshi Takayama, Hiroyuki Takewa, Tsuneo Tanaka | 1989-02-07 |
| 4426556 | Electrodynamic loudspeaker | Katuaki Sato, Kazue Sato, Seiichi Ishikawa, Hideaki Inoue, Tsuneo Tanaka | 1984-01-17 |
| 4300655 | Acoustic diaphragm for speakers and method of producing the same | Naraji Sakamoto, Kazue Sato, Kousaku Murata, Hiroshi Yamamoto | 1981-11-17 |