Inventor
YAMAOKA HIDEYOSHI
JP16 patents
⚠️ This page may combine multiple inventors who share the name “YAMAOKA HIDEYOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SHARP KK
15 patentsUS5013494AMay 7, 1991
Process for preparing blazed holograms
SHARP KK56 citations96
US4988165AJan 29, 1991
Object lens driving device
SHARP KK55 citations96
US4610912ASep 9, 1986
Magneto-optic memory element
SHARP KK31 citations93
US4660190AApr 21, 1987
Optical focus position control in optical disc apparatus
SHARP KK42 citations92
US4634617AJan 6, 1987
Optical memory disc
SHARP KK34 citations92
US4573149AFeb 25, 1986
Magneto-optical head assembly with improved detection means
SHARP KK32 citations92
US5200941AApr 6, 1993
Optical retrieval system for encoding pit angular data and optical recording element thereof
SHARP KK18 citations82
US4721368AJan 26, 1988
Optical system in a magneto-optical memory device
SHARP KK23 citations82
US4658390AApr 14, 1987
Optical focus position control in an optical memory system
SHARP KK22 citations79
US5738765AApr 14, 1998
Magneto-optic memory device
SHARP KK6 citations74
US5331623AJul 19, 1994
Optical retrieval system for encoding pit angular data and optical recording element therefor
SHARP KK10 citations74
US5214636AMay 25, 1993
Optical recording element having a plurality of thin film filtering layers and optical recording element having an electrically conductive layer
SHARP KK11 citations74
US4658393AApr 14, 1987
Optical memory disc
SHARP KK11 citations73
US4739431AApr 19, 1988
Thin-film magnetic head
SHARP KK14 citations71
US5714251AFeb 3, 1998
Magneto-optic memory device
SHARP KK3 citations63