Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8983104 | Ring-shaped speaker having two voice coils and control member | — | 2015-03-17 |
| 8358181 | Substrate attenuator circuit | — | 2013-01-22 |
| 8319998 | Billing system capable of being connected to an output apparatus having printing function and copy function via a network server apparatus capable of being connected to an output apparatus having printing function and copy function via a network and method of billing by system capable of being connected to an output apparatus having printing function and copy function via a network | Takashi Kaneko, Hayato Sakae | 2012-11-27 |
| 7957087 | Servo write method and servo write system for hard-disk drive | Yasunori Nishimoto, Yoshiteru Katsumura, Hiroshi Fukuyama | 2011-06-07 |
| 7684586 | Dual voice coil speaker | — | 2010-03-23 |
| 7630505 | Loudspeaker system | — | 2009-12-08 |
| 7433487 | Speaker | — | 2008-10-07 |
| 7423825 | Disk unit and manufacturing method thereof | Osama Takazawa, Kaoru Umemura, Kazuhiko Washizu | 2008-09-09 |
| 6158109 | Coil manufacturing method using ring shaped spacer | Kei Tanabe | 2000-12-12 |
| 5937076 | Magnetic drive apparatus and method for manufacturing coil that forms the apparatus | Kei Tanabe | 1999-08-10 |