Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6038205 | Spindle motor | Masaaki Satoh | 2000-03-14 |
| 5877918 | Disk driving device with hub flange secured between yoke and drive magnet | Yutaka Ishizuka | 1999-03-02 |
| 5744881 | Spindle motor, and its rotor yoke manufacturing method | Yutaka Ishizuka | 1998-04-28 |
| 5686771 | Electric motor | Yutaka Ishizuka | 1997-11-11 |
| 5666219 | Rotary polygon mirror type light deflecting system | Yutaka Ishizuka | 1997-09-09 |
| 5661588 | Rotary polygon mirror type light deflecting system | Yutaka Ishizuka | 1997-08-26 |
| 5644084 | Method of measuring natural frequency of motor | Shinji Kinoshita, Mitsuru Ide | 1997-07-01 |
| 5475274 | Driving motor | — | 1995-12-12 |
| 5414575 | Magnetic disc drive device with hub and clamper assembly for reducing post-assembly machining | — | 1995-05-09 |
| 5268604 | Armature of a small motor employing an insulating holder having a plurality of sections | — | 1993-12-07 |
| 5241229 | Magnetic disc drive motor | Kimio Kitajima | 1993-08-31 |
| 5047677 | Aluminum disk motor having thermal compensation and magnetic sealing | Sadayoshi Mineta | 1991-09-10 |