HITACHI MEDIA ELECTRONICS CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G11B INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER 8867
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 5200
 
  
 
G09G ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION 2149
 
  
 
H01J ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS 2126
 
  
 
H01Q AERIALS 2108
 
  
 
H04B TRANSMISSION 2208
 
  
 
F16B DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING 148
 
  
 
G05F SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES 199
 
  
 
G06K RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS 1197
 
  
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 183

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9076494 Optical pick up including protrusion portion to position optical elementOct 02, 13Jul 07, 15[G11B]
8937855 Holographic optical pickup device, optical information recording and reproducing device, and method of reproducing optical information, having angular variable element arrangements for changing a light angleJun 19, 13Jan 20, 15[G11B]
8902723 Fixing structure of optical component, fixing method of optical component, optical pick-up device, and module device with light sources of RGB three primary colorsNov 21, 13Dec 02, 14[F16B, G11B]
8873173 Object lens drive unit and optical pickup using the sameMar 27, 12Oct 28, 14[G02B, G11B]
8804474 Optical information recording/reproducing apparatusAug 06, 13Aug 12, 14[G11B]
8743668 Objective lens drive device and optical pickupDec 14, 10Jun 03, 14[G11B]
8737180 Optical pickup device and optical disc apparatus for recording and reproducing information on and from optical disc including plurality of recording layersAug 29, 12May 27, 14[G11B]
8737184 Holographic optical pickup device, optical information recording and reproducing device, and method of recording and reproducing optical informationMay 31, 13May 27, 14[G11B]
8711666 Adhesive structure of optical device, adhesion method, and optical pickup deviceJun 18, 13Apr 29, 14[G11B]
8693075 Scan type image display deviceApr 19, 12Apr 08, 14[G02B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2014/0234,596 Adhesive Structure of Optical Component, Manufacturing Method Thereof, and Image Output DeviceAbandonedNov 08, 13Aug 21, 14[C09J, G21K]
2014/0089,952 OPTICAL PICKUPAbandonedMar 25, 13Mar 27, 14[G11B]
2014/0036,242 OPTICAL SCANNING APPARATUS AND OPTICAL SCANNING IMAGE PROJECTION APPARATUSAbandonedJul 24, 13Feb 06, 14[G02B, G03B]
2014/0036,648 OPTICAL DISC DEVICEAbandonedAug 02, 13Feb 06, 14[G11B]
8644120 Optical information processing device and tracking control method thereof for use with grooveless multilayer optical discExpiredMay 23, 12Feb 04, 14[G11B]
8645979 Optical pickupExpiredMar 30, 12Feb 04, 14[G11B]
2014/0029,076 OPTICAL MODULE AND SCANNING TYPE IMAGE DISPLAY DEVICEAbandonedJun 26, 13Jan 30, 14[G02B]
2013/0343,172 OPTICAL PICKUP DEVICE, OPTICAL INFORMATION RECORDING DEVICE, OPTICAL INFORMATION RECORDING METHOD, AND OPTICAL INFORMATION RECORDING MEDIUMAbandonedJun 21, 13Dec 26, 13[G11B]
2013/0322,056 LIGHT SOURCE DEVICE AND IMAGE DISPLAY APPARATUSAbandonedMay 29, 13Dec 05, 13[F21V]
8593928 Optical head and optical drive deviceExpiredMay 03, 12Nov 26, 13[G11B]
8588038 Optical pickupExpiredMar 23, 12Nov 19, 13[G11B]
8589964 Cooling arrangement for an optical pick-upExpiredJul 29, 05Nov 19, 13[G11B]
8589966 Optical pickupExpiredMar 27, 12Nov 19, 13[G11B]
8589967 Optical pickupExpiredMar 30, 12Nov 19, 13[G11B]
2013/0294,211 OPTICAL PICKUP DEVICE AND METHOD FOR MANUFACTURING THE SAMEAbandonedMay 06, 13Nov 07, 13[G11B]
8565059 Optical pickup device and optical disc apparatusExpiredJun 06, 12Oct 22, 13[G11B]
8565060 Optical pickup device and method for manufacturing the sameExpiredSep 13, 12Oct 22, 13[G11B]
2013/0250,384 LIGHT SCANNING MIRROR DEVICE, CONTROL METHOD FOR THE SAME, AND AN IMAGE DRAWING DEVICE EMPLOYING THE SAMEAbandonedMar 08, 13Sep 26, 13[G02B]
8542560 Diffraction grating and optical pickup deviceExpiredAug 17, 06Sep 24, 13[G11B]
2013/0242,265 OPTICAL MODULE AND SCANNING IMAGE DISPLAY DEVICEAbandonedMar 08, 13Sep 19, 13[F21V, G03B]

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