Inventor

YONEYAMA RYOJI

JP4 patents

Patents

4 patents

US6552456B2Apr 22, 2003

Hydraulic dynamic pressure bearing motor

SEIKO INSTR INC17 citations81

US6371649B1Apr 16, 2002

Method for lubricating a fluid dynamic pressure bearing

SEIKO INSTR INC10 citations72

US7191806B2Mar 20, 2007

Oil injecting apparatus

SEIKO INSTR INC3 citations61

US6575633B2Jun 10, 2003

Hydraulic bearing motor

SEIKO INSTR INC6 citations60