Inventor
OTSUKI HARUAKI
JP11 patents
⚠️ This page may combine multiple inventors who share the name “OTSUKI HARUAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
5 patentsUS5189578AFeb 23, 1993
Disk system with sub-actuators for fine head displacement
HITACHI LTD202 citations98
US5402400AMar 28, 1995
Method and apparatus for eliminating external disturbances in a disk drive device
HITACHI LTD63 citations93
US4430606AFeb 7, 1984
Sheet feeding apparatus
HITACHI LTD14 citations73
US4418305ANov 29, 1983
Velocity feedback circuit
HITACHI LTD10 citations73
US5229896AJul 20, 1993
Disk drive and method of controlling the same
HITACHI LTD19 citations70
HITACHI VIA MECHANICS LTD
4 patentsUS7612479B2Nov 3, 2009
Scanner for equalizing torque constant and reducing torque constant variation
HITACHI VIA MECHANICS LTD2 citations61
US7432681B2Oct 7, 2008
Scanner system
HITACHI VIA MECHANICS LTD4 citations61
US7023598B2Apr 4, 2006
Optical scanner and laser machining apparatus
HITACHI VIA MECHANICS LTD2 citations61
US7270270B2Sep 18, 2007
Optical scanner control method, optical scanner and laser machining apparatus
HITACHI VIA MECHANICS LTD0 citations50