Issued Patents All Time
Showing 26–46 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6752906 | Loudspeaker and method for the preparation thereof | Kunihiko Tokura, Yoshio Ohashi, Satoshi Idemura, Michiya Nakashima, Katsuji Takahashi | 2004-06-22 |
| 6686036 | Material for casing for acoustic equipment and casing for acoustic equipment fabricated therefrom | Kunihiko Tokura, Masayuki Kamite | 2004-02-03 |
| 6578661 | Speaker apparatus | Yoshio Ohashi | 2003-06-17 |
| 6570995 | Speaker device | Yoshio Ohashi | 2003-05-27 |
| 6554962 | Loudspeaker diaphragm | Kunihiko Tokura, Yoshio Ohashi, Satoshi Idemura, Michiya Nakashima, Katsuji Takahashi | 2003-04-29 |
| 6410618 | Polymeric composite material and method of manufacturing the same | Kunihiko Tokura | 2002-06-25 |
| 6364966 | Method for manufacturing acoustic vibration plate | Yoshio Ohashi | 2002-04-02 |
| 6274652 | Composite polymer materials and process for producing the same | Kunihiko Tokura | 2001-08-14 |
| 6071449 | Acoustic diaphragm molding metal mold apparatus and acoustic diaphragm molding method | Kunihiko Tokura | 2000-06-06 |
| 6037411 | Acoustic vibrational material of fiber reinforcement with epoxy resin and epoxy-reactive polybutadiene | Kunihiko Tokura, Seiji Matsuura | 2000-03-14 |
| 5972159 | Optical recording disc recycling method | Kunihiko Tokura, Jun Kishigami | 1999-10-26 |
| 5663220 | Acoustic vibrational material from fiber-reinforced polybutadiene-modified epoxy resin | Kunihiko Tokura, Seiji Matsuura | 1997-09-02 |
| 5590212 | Diaphragm for a capacitance type loudspeaker | Kunihiko Tokura, Ikuo Chatani, Ikuo Mizoguchi, Mamoru Ito | 1996-12-31 |
| 5533134 | Motional feedback loudspeaker apparatus having a coupling member for connecting a voice coil bobbin with a detecting coil bobbin | Kunihiko Tokura, Kenji Yamada | 1996-07-02 |
| 5473121 | Acoustic vibration plate | — | 1995-12-05 |
| 5445555 | Resin material reclaimed from optical recording disk and method of reclaiming same | Kunihiko Tokura | 1995-08-29 |
| 5368695 | Method for producing an acoustic vibration plate | — | 1994-11-29 |
| 5274199 | Acoustic diaphragm and method for producing same | Noboru Kurihara | 1993-12-28 |
| 5180785 | Diaphragm and method for producing same | Kunihiko Tokura, Kyouji Muraoka | 1993-01-19 |
| 5098976 | Acoustic material | Yoshio Nishi, Kazuo Yagi | 1992-03-24 |
| 4742164 | Bacterial cellulose-containing molding material having high dynamic strength | Masatoshi Iguchi, Shigenobu Mitsuhashi, Kunihiro Ichimura, Yoshio Nishi, Shigeru Yamanaka +1 more | 1988-05-03 |