Inventor
KATAKURA KOICHI
JP12 patents
Patents
12 patentsUS5744881AApr 28, 1998
Spindle motor, and its rotor yoke manufacturing method
SANKYO SEIKI SEISAKUSHO KK27 citations92
US5268604ADec 7, 1993
Armature of a small motor employing an insulating holder having a plurality of sections
SANKYO SEIKI SEISAKUSHO KK25 citations92
US5241229AAug 31, 1993
Magnetic disc drive motor
SANKYO SEIKI SEISAKUSHO KK40 citations90
US5047677ASep 10, 1991
Aluminum disk motor having thermal compensation and magnetic sealing
SANKYO SEIKI SEISAKUSHO KK53 citations89
US5877918AMar 2, 1999
Disk driving device with hub flange secured between yoke and drive magnet
SANKYO SEIKI SEISAKUSHO KK14 citations73
US5686771ANov 11, 1997
Electric motor
SANKYO SEIKI SEISAKUSHO KK17 citations73
US5666219ASep 9, 1997
Rotary polygon mirror type light deflecting system
SANKYO SEIKI SEISAKUSHO KK9 citations73
US5475274ADec 12, 1995
Driving motor
SANKYO SEIKI SEISAKUSHO KK17 citations73
US5414575AMay 9, 1995
Magnetic disc drive device with hub and clamper assembly for reducing post-assembly machining
SANKYO SEIKI SEISAKUSHO KK11 citations73
US6038205AMar 14, 2000
Spindle motor
SANKYO SEIKI SEISAKUSHO KK9 citations72
US5661588AAug 26, 1997
Rotary polygon mirror type light deflecting system
SANKYO SEIKI SEISAKUSHO KK5 citations62
US5644084AJul 1, 1997
Method of measuring natural frequency of motor
SANKYO SEIKI SEISAKUSHO KK2 citations61