Inventor
IKEDA ETSURO
JP12 patents
⚠️ This page may combine multiple inventors who share the name “IKEDA ETSURO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
10 patentsUS6654337B2Nov 25, 2003
Magneto-optical recording medium having pit pitch greater than groove pitch
SONY CORP18 citations91
US6022462AFeb 8, 2000
DC sputtering system
SONY CORP12 citations66
US7468200B2Dec 23, 2008
Write once optical recording medium
SONY CORP4 citations61
US5745443AApr 28, 1998
Magneto-optical disc having a protective film with minimal projections and method of production of same
SONY CORP6 citations61
US5585197ADec 17, 1996
Magneto-optical recording medium having a rave earth-transition metal alloy layer, a rave earth layer, a rare earth oxide layer, and a SiN layer
SONY CORP2 citations60
US6319623B1Nov 20, 2001
Magneto-optical recording medium
SONY CORP0 citations51
US6048597AApr 11, 2000
Optical device and manufacturing method thereof
SONY CORP1 citations51
US7924694B2Apr 12, 2011
Write-once type optical recording medium and fabrication method thereof
SONY CORP0 citations50
US5741541AApr 21, 1998
Method for producing magneto-optical recording medium
SONY CORP0 citations50
US7787353B2Aug 31, 2010
Optical recording medium and method for manufacturing same
SONY CORP0 citations35