Inventor
YONEYAMA RYOUJI
JP3 patents
Patents
3 patentsUS6307291B1Oct 23, 2001
Hydraulic dynamic bearing and spindle motor and rotary assembly provided
SEIKO INSTR INC59 citations95
US6371650B1Apr 16, 2002
Hydraulic dynamic bearing and spindle motor and rotary assembly provided
SEIKO INSTR INC52 citations92
US7438476B2Oct 21, 2008
Hydraulic dynamic bearing and spindle motor
SEIKO INSTR INC7 citations71