NIPPON COLUMBIA 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 2136
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 1158
 
  
 
G10H ELECTROPHONIC MUSICAL INSTRUMENTS 130

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6570396 Interface structure for contacting probe beamsNov 24, 00May 27, 03[G01R]
6456572 Disk driving unitSep 29, 99Sep 24, 02[G11B]
6434100 Optical disc reproducing apparatusSep 28, 00Aug 13, 02[G10H]
5959959 Automatic disk changer with detachable clampers held by a disk mounting mechanismDec 05, 95Sep 28, 99[G11B]
D379984 Audio equipmentApr 26, 95Jun 17, 97[1403]
D379813 Amplifier for Hi-FiApr 26, 95Jun 10, 97[1403]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7203312 Data reproduction apparatus and data reproduction moduleExpiredAug 29, 00Apr 10, 07[H04N]
7181629 Data distribution system as well as data supply device terminal device and recording device for the sameExpiredAug 20, 00Feb 20, 07[H04L]
6999948 Memory cardExpiredAug 09, 00Feb 14, 06[G06F]
6771582 Control dial and optical disk apparatus having the control dialExpiredMar 17, 00Aug 03, 04[G11B]
6587984 Distortion detecting device, distortion correcting device, and distortion correcting method for digital audio signalExpiredSep 17, 99Jul 01, 03[H04L]
2003/0058,139 Electronic devices having operating buttonsAbandonedNov 01, 02Mar 27, 03[H03K, H03M]
6504993 DVD recording device and recording methodExpiredFeb 11, 99Jan 07, 03[H04N]
2002/0136,122 Optical information record medium, method of recording information on optical information record medium, and information recording apparatusAbandonedMar 19, 02Sep 26, 02[G11B]
2002/0091,592 Content package order receiving system, and content package order receiving and production systemAbandonedSep 07, 01Jul 11, 02[G06F]
6373798 Recording device which can continuously record information data onto plurality of information mediaExpiredMay 28, 99Apr 16, 02[G11B]
2002/0036,957 Disk reproducing apparatusAbandonedAug 10, 01Mar 28, 02[G11B]
2002/0002,619 Computer systemAbandonedMar 16, 01Jan 03, 02[G06F]
2001/0037,256 Content data delivery system and content data delivery methodAbandonedMar 23, 01Nov 01, 01[G06F]
6058079 Optical disc reproducing apparatus for pre-reading recording data to be reproducedExpiredOct 31, 97May 02, 00[G11B]
5923638 Disk reproducing apparatus having an auto-changerExpiredFeb 25, 97Jul 13, 99[G11B]
5790488 Optical disk having both constant linear and constant angular velocity recording regions and optical disk recording systemExpiredApr 08, 96Aug 04, 98[G11B]
5757750 Optical disk having both constant linear and constant angular velocity recording regions and optical disk recording systemExpiredJun 30, 97May 26, 98[G11B]
5731923 Medium recording apparatus and medium reproducing apparatus, and medium recording method and medium reproducing method, and medium used thereforExpiredSep 23, 96Mar 24, 98[G11B]
5687148 Optical disk having both constant linear and constant angular velocity recording regions and optical disk recording systemExpiredApr 08, 96Nov 11, 97[G11B]
5684259 Method of computer melody synthesis responsive to motion of displayed figuresExpiredSep 09, 94Nov 04, 97[G10H]

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