Inventor
KAGAWA MASAKI
JP23 patents
⚠️ This page may combine multiple inventors who share the name “KAGAWA MASAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
10 patentsUS6269070B1Jul 31, 2001
Optical disc having specified track pitch, push-pull signal, and cross-track signal
SONY CORP57 citations95
US5822294AOct 13, 1998
Optical recording medium having a specified range of pit widths and pit depths
SONY CORP21 citations92
US7012747B2Mar 14, 2006
Polarizing beam splitter and polarizer using the same
SONY CORP8 citations74
US6400677B2Jun 4, 2002
High recording density optical disc
SONY CORP7 citations74
US5946287AAug 31, 1999
Optical disk having pits with push-pull signal of opposite polarity to that of guide grooves
SONY CORP14 citations74
US6222808B1Apr 24, 2001
Optical information reproducing method and apparatus
SONY CORP9 citations73
US5838654ANov 17, 1998
Optical recording medium having a specified range of pit widths and pit depths
SONY CORP7 citations73
US5400318AMar 21, 1995
Edge detection of information pit pattern by establishing threshold voltage from a closely spaced pit pattern
SONY CORP9 citations73
US6850476B2Feb 1, 2005
Optical recording medium
SONY CORP0 citations51
US6618345B1Sep 9, 2003
Reduced crosstalk optical recording medium using an optically related track pitch
SONY CORP1 citations51
MINEBEA CO LTD
10 patentsUS6331746B1Dec 18, 2001
Actuator
MINEBEA CO LTD27 citations92
US6201324B1Mar 13, 2001
Stator pole teeth for a claw pole stepping motor
MINEBEA CO LTD37 citations92
US6194806B1Feb 27, 2001
Compact cylindrical radial gap type motor
MINEBEA CO LTD41 citations92
US6140726AOct 31, 2000
Radial gap cylindrical motor having an increased number of slots
MINEBEA CO LTD21 citations92
US6087755AJul 11, 2000
Radial gap type cylindrical motor
MINEBEA CO LTD51 citations92
US6057621AMay 2, 2000
Cylindrical radial gap type motor structure
MINEBEA CO LTD29 citations92
US6756871B1Jun 29, 2004
Actuator with number of stator teeth equal to number of rotor poles
MINEBEA CO LTD14 citations84
US6765320B1Jul 20, 2004
Actuator
MINEBEA CO LTD7 citations74
US7825556B2Nov 2, 2010
Stepping motor
MINEBEA CO LTD4 citations62
US7635931B2Dec 22, 2009
Stepping motor
MINEBEA CO LTD4 citations62