Inventor
NAITO TAKASHI
JP132 patents
⚠️ This page may combine multiple inventors who share the name “NAITO TAKASHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
23 patentsUS6040029AMar 21, 2000
Glass substrate of disk for recording information, a disk for recording information, and a disk device for recording information
HITACHI LTD42 citations96
US6801397B2Oct 5, 2004
Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture and a magnetic disk device
HITACHI LTD14 citations92
US6790502B1Sep 14, 2004
Optically functional element and production method and application therefor
HITACHI LTD27 citations92
US6577472B2Jun 10, 2003
Glass substrate for a magnetic disk, a magnetic disk which can be formed with a stable texture
HITACHI LTD23 citations92
US6411591B1Jun 25, 2002
Optical recording medium and optical memory device
HITACHI LTD42 citations92
US6136401AOct 24, 2000
Glass substrate of disk for recording information, a disk for recording information, and a disk device for recording information
HITACHI LTD19 citations92
US7169334B2Jan 30, 2007
Optical information recording medium
HITACHI LTD11 citations84
US6840833B1Jan 11, 2005
Gas discharge type display panel and production method therefor
HITACHI LTD18 citations82
US6150027ANov 21, 2000
Glass composition, structure, and apparatus using the same
HITACHI LTD14 citations82
US7232612B2Jun 19, 2007
Glass substrate of disk for recording information, a disk for recording information, and a disk device for recording information
HITACHI LTD7 citations74
US6730384B2May 4, 2004
Nonlinear optical thin film, optical recording medium using nonlinear optical film and optical switch
HITACHI LTD10 citations74
US6700852B1Mar 2, 2004
Information recording medium with recording film with cobalt oxide crystalline particles, and information recording device including the same
HITACHI LTD12 citations74
US6512655B1Jan 28, 2003
Magnetic head with sealing glass composition
HITACHI LTD6 citations74
US6503858B1Jan 7, 2003
Glass composition, structure, and apparatus using the same
HITACHI LTD10 citations74
US6440517B1Aug 27, 2002
Glass material
HITACHI LTD4 citations74
US6177169B1Jan 23, 2001
Optical information recording medium
HITACHI LTD5 citations74
US5985401ANov 16, 1999
Optical information recording medium
HITACHI LTD9 citations74
US4741849AMay 3, 1988
Ceramic body glass composition for bonding and filling ceramic parts thereof
HITACHI LTD17 citations74
US10913680B2Feb 9, 2021
Lead-free glass composition, glass composite material, glass paste, sealing structure, electrical/electronic component and coated component
HITACHI LTD3 citations73
US9824900B2Nov 21, 2017
Bonded structure and production method therefor
HITACHI LTD3 citations73
US9373558B2Jun 21, 2016
Resin-sealed electronic control device
HITACHI LTD3 citations73
US6844092B2Jan 18, 2005
Optically functional element and production method and application therefor
HITACHI LTD10 citations73
US6689456B2Feb 10, 2004
Magnetic recording medium, a manufacturing method thereof, and a magnetic recording unit using thereof
HITACHI LTD8 citations73
SONY CORP
6 patentsUS5355121AOct 11, 1994
Alarm device for magneto-optical disc drive unit
SONY CORP33 citations92
US4748606AMay 31, 1988
External magnetic field inverting apparatus for magneto-optical disc apparatus
SONY CORP26 citations92
US4785444ANov 15, 1988
Optical recording disc
SONY CORP27 citations89
US5258971ANov 2, 1993
Optical disc drive with interconnecting hoods
SONY CORP9 citations74
US4653039AMar 24, 1987
Disc player
SONY CORP18 citations74
US5867477AFeb 2, 1999
Optical disk with snap-fit magnetized hub
SONY CORP10 citations73
TOYODA GOSEI KK
3 patentsADVANTEST CORP
3 patentsMATSUSHITA GRAPHIC COMMUNIC
2 patentsNAITO TAKASHI
2 patentsHITACHI GLOBAL STORAGE TECH
1 patentRENESAS TECH CORP
1 patentPANASONIC COMM CO LTD
1 patentAISIN AW CO
1 patentTOYOTA MOTOR CO LTD
1 patentHITACHI POWDERED METALS
1 patentHITACHI CHEMICAL CO LTD
1 patentMIZUNO AKIRA
1 patentHORIGUCHI MUNEHISA
1 patentFANCL CORP
1 patentNIPPON DENSO CO
1 patentShowing the top 50 of 132 patents by PatentIndex Score.