Inventor
WAKABAYASHI KOICHIRO
JP8 patents
⚠️ This page may combine multiple inventors who share the name “WAKABAYASHI KOICHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI MAXELL
5 patentsUS6876506B1Apr 5, 2005
Information recording medium, information recording/reproducing head, and information storage device
HITACHI MAXELL6 citations61
US7755998B2Jul 13, 2010
Optical pickup system, optical head, optical disk apparatus, and objective lens
HITACHI MAXELL2 citations59
US7855940B2Dec 21, 2010
Pickup lens with phase compensator and optical pickup apparatus using the same
HITACHI MAXELL0 citations45
US7586815B2Sep 8, 2009
Pickup lens with phase compensator and optical pickup apparatus using the same
HITACHI MAXELL0 citations45
US7787349B2Aug 31, 2010
Optical pickup lens and optical pickup apparatus
HITACHI MAXELL0 citations39
HITACHI LTD
3 patentsUS6430131B1Aug 6, 2002
Optical information reproducing device
HITACHI LTD3 citations61
US6717898B2Apr 6, 2004
Optical information reproducing method for reproducing information by generating a signal representing a center of a mark
HITACHI LTD0 citations51
US6577573B2Jun 10, 2003
Optical information reproducing method in which either a first edge signal or a second edge signal is selected depending on a length of a mark on an optical information medium
HITACHI LTD0 citations51