| 8428293 |
Speaker device |
Akiko Fujise, Hiroyuki Takewa |
2013-04-23 |
| 7447328 |
Loudspeaker |
Hiroyuki Takewa, Atsushi Inaba, Satoshi Koura |
2008-11-04 |
| 7054459 |
Surrounding structure of a loudspeaker |
Mitsukazu Kuze, Hiroyuki Takewa |
2006-05-30 |
| 6973194 |
Speaker |
Hiroyuki Takewa |
2005-12-06 |
| 6757404 |
Loud speaker, diaphragm and process for making the diaphragm |
Hiroyuki Takewa, Mitsukazu Kuze, Shinya Tabata, Shinya Mizone, Yoshiyuki Takahashi +5 more |
2004-06-29 |
| 6747395 |
Piezoelectric loudspeaker |
Kazue Satoh, Hiroyuki Takewa, Mitsukazu Kuze |
2004-06-08 |
| 6714655 |
Speaker |
Hiroyuki Takewa |
2004-03-30 |
| 6655495 |
Loudspeaker damper and loudspeaker |
Mitsukazu Kuze, Hiroyuki Takewa, Kazue Satoh |
2003-12-02 |
| 6305491 |
Speaker |
Hiroyuki Takewa, Kazue Sato, Mitsuhiro Hasegawa |
2001-10-23 |
| 6069965 |
Loudspeaker |
Hiroyuki Takewa, Kazue Satoh, Tohru Kikkawa |
2000-05-30 |
| 5862242 |
Speaker |
Hiroyuki Takewa, Akihiro Furuta, Kazue Satoh, Kuniaki Sakai |
1999-01-19 |
| 5664024 |
Loudspeaker |
Akihiro Furuta, Kazue Satoh, Hiroyuki Takewa, Shinya Mizone, Kuniaki Sakai |
1997-09-02 |
| 4823908 |
Directional loudspeaker system |
Tsuneo Tanaka, Youichi Kimura, Akira Nakamura |
1989-04-25 |
