Inventor
MARO TSUYOSHI
JP19 patents
⚠️ This page may combine multiple inventors who share the name “MARO TSUYOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI MAXELL
18 patentsUS6160769ADec 12, 2000
Optical recording medium and optical recording device
HITACHI MAXELL51 citations96
US6127017AOct 3, 2000
Substrate for information recording disk, mold and stamper for injection molding substrate, and method for making stamper, and information recording disk
HITACHI MAXELL46 citations95
US7027385B1Apr 11, 2006
Optical disk, disk substrate, and drive
HITACHI MAXELL30 citations92
US5068152ANov 26, 1991
Magnetic recording medium
HITACHI MAXELL25 citations92
US6333900B1Dec 25, 2001
Optical recording medium, optical head, and optical recording device
HITACHI MAXELL18 citations91
US6333089B1Dec 25, 2001
Substrate for information recording disk, mold and stamper for injection molding substrate, and method for making stamper, and information recording disk
HITACHI MAXELL25 citations91
US6027801AFeb 22, 2000
Magnetic recording medium
HITACHI MAXELL20 citations91
US7988371B2Aug 2, 2011
Camera module
HITACHI MAXELL10 citations84
US6781926B2Aug 24, 2004
Magneto-optical head having heat sink layer
HITACHI MAXELL17 citations84
US6366541B1Apr 2, 2002
Optical recording medium with solid protective layer having self-lubricating property
HITACHI MAXELL13 citations73
US6319580B1Nov 20, 2001
Recording disk and producing method therefor
HITACHI MAXELL9 citations73
US5059337AOct 22, 1991
Soft magnetic materials comprising 9 to 15 atomic percent carbon atoms
HITACHI MAXELL8 citations73
US4828919AMay 9, 1989
Magnetic recording medium and process for preparing the same
HITACHI MAXELL12 citations73
US6217968B1Apr 17, 2001
Optical recording medium, optical head and optical recording device
HITACHI MAXELL8 citations72
US6760279B1Jul 6, 2004
Magneto-optical storage apparatus having the relation between numerical aperture and recording medium
HITACHI MAXELL3 citations62
US8027519B2Sep 27, 2011
Imaging module for biometrics authentication, biometrics authentication apparatus and prism
HITACHI MAXELL5 citations61
US7389050B2Jun 17, 2008
Wavelength multiplexer/demultiplexing device
HITACHI MAXELL3 citations60
US7079322B2Jul 18, 2006
Wavelength division multiplexer
HITACHI MAXELL5 citations60