Assignee
NIPPON COLUMBIA
59 granted patents·1 pending application·924 citations·filing 1974–2002
Top patents by PatentIndex Score
60 records- 0190USD448757SRemote control unitNIPPON COLUMBIA·Filed 2000·Granted Oct 2, 2001·92 cites·1 claims
- 0288US5828648AOptical information recording medium and method of manufacturingNIPPON COLUMBIA·Filed 1997·Granted Oct 27, 1998·64 cites·7 claims
- 0388US5703868AOptical information recording medium having discernible obverse and reverse sidesNIPPON COLUMBIA·Filed 1996·Granted Dec 30, 1997·55 cites·24 claims
- 0485US4355338ADuplicatorNIPPON COLUMBIA·Filed 1980·Granted Oct 19, 1982·35 cites·5 claims
- 0583US5923638ADisk reproducing apparatus having an auto-changerNIPPON COLUMBIA·Filed 1997·Granted Jul 13, 1999·40 cites·6 claims
- 0683US4463223AHead phoneNIPPON COLUMBIA·Filed 1982·Granted Jul 31, 1984·66 cites·7 claims
- 0779US6504993B1DVD recording device and recording methodNIPPON COLUMBIA·Filed 1999·Granted Jan 7, 2003·36 cites·12 claims
- 0877US6320827B1Optical disc reproducing apparatusNIPPON COLUMBIA·Filed 2000·Granted Nov 20, 2001·12 cites·4 claims
- 0976US5293362AOptical disc play-back device of the carousel type, having a mechanism for reducing access type to any selected discNIPPON COLUMBIA·Filed 1992·Granted Mar 8, 1994·32 cites·19 claims
- 1075US6014364AOptical information recording medium and method of manufacturingNIPPON COLUMBIA·Filed 1999·Granted Jan 11, 2000·26 cites·18 claims
- 1175US4149036ACrosstalk compensating circuitNIPPON COLUMBIA·Filed 1977·Granted Apr 10, 1979·30 cites·7 claims
- 1274US4519064AOptical record discNIPPON COLUMBIA·Filed 1981·Granted May 21, 1985·18 cites·8 claims
- 1373US4831615ADual differential optical system moving apparatusNIPPON COLUMBIA·Filed 1986·Granted May 16, 1989·18 cites·13 claims
- 1472US6434100B1Optical disc reproducing apparatusNIPPON COLUMBIA·Filed 2000·Granted Aug 13, 2002·23 cites·4 claims
- 1570USD250646SPhonographNIPPON COLUMBIA·Filed 1976·Granted Dec 26, 1978·13 cites·1 claims
- 1668US4110670ABraking apparatusNIPPON COLUMBIA·Filed 1977·Granted Aug 29, 1978·12 cites·8 claims
- 1768US4074873ATension servo apparatusNIPPON COLUMBIA·Filed 1976·Granted Feb 21, 1978·14 cites·13 claims
- 1867US6061314AOptical disc device reproducing information according to reproduction speed informationNIPPON COLUMBIA·Filed 1997·Granted May 9, 2000·19 cites·12 claims
- 1967US5687148AOptical disk having both constant linear and constant angular velocity recording regions and optical disk recording systemNIPPON COLUMBIA·Filed 1996·Granted Nov 11, 1997·16 cites·2 claims
- 2065US5959959AAutomatic disk changer with detachable clampers held by a disk mounting mechanismNIPPON COLUMBIA·Filed 1995·Granted Sep 28, 1999·18 cites·17 claims
- 2161US5940352ARecord medium device for recording and reproducing time codes synchronized with input/reproduction signals into and from record medium having UTOC area, and record medium having UTOC areaNIPPON COLUMBIA·Filed 1997·Granted Aug 17, 1999·24 cites·24 claims
- 2261US5731923AMedium recording apparatus and medium reproducing apparatus, and medium recording method and medium reproducing method, and medium used thereforNIPPON COLUMBIA·Filed 1996·Granted Mar 24, 1998·20 cites·9 claims
- 2359US6818157B2Light guiding plate manufacturing apparatus and light guiding plate manufacturing methodNIPPON COLUMBIA·Filed 2002·Granted Nov 16, 2004·4 cites·1 claims
- 2458US5790488AOptical disk having both constant linear and constant angular velocity recording regions and optical disk recording systemNIPPON COLUMBIA·Filed 1996·Granted Aug 4, 1998·11 cites·4 claims
- 2558US4674077ADisc reproducing apparatus with carousel using disc clamping deviceNIPPON COLUMBIA·Filed 1984·Granted Jun 16, 1987·11 cites·5 claims
- 2655USD443259SPortable recording and playback deviceNIPPON COLUMBIA·Filed 2000·Granted Jun 5, 2001·12 cites·1 claims
- 2755US4214893AMethod of making a magnetic powderNIPPON COLUMBIA·Filed 1977·Granted Jul 29, 1980·18 cites·16 claims
- 2854US6314083B1Frequency control device and method for frequency synchronization with multiplex signal by OFDM, receiving device, and communication deviceNIPPON COLUMBIA·Filed 1998·Granted Nov 6, 2001·45 cites·19 claims
- 2954US5757750AOptical disk having both constant linear and constant angular velocity recording regions and optical disk recording systemNIPPON COLUMBIA·Filed 1997·Granted May 26, 1998·8 cites·4 claims
- 3051US6699643B2Stamper manufacturing methodNIPPON COLUMBIA·Filed 2001·Granted Mar 2, 2004·8 cites·6 claims
- 3151US6058079AOptical disc reproducing apparatus for pre-reading recording data to be reproducedNIPPON COLUMBIA·Filed 1997·Granted May 2, 2000·12 cites·27 claims
- 3246US6373798B1Recording device which can continuously record information data onto plurality of information mediaNIPPON COLUMBIA·Filed 1999·Granted Apr 16, 2002·7 cites·8 claims
- 3346US4543617ARecording apparatusNIPPON COLUMBIA·Filed 1982·Granted Sep 24, 1985·4 cites·7 claims
- 3445US6456572B1Disk driving unitNIPPON COLUMBIA·Filed 1999·Granted Sep 24, 2002·6 cites·6 claims
- 3544US4336501AFrequency characteristic adjusting circuitNIPPON COLUMBIA·Filed 1979·Granted Jun 22, 1982·9 cites·17 claims
- 3644US4101133APickup tone armNIPPON COLUMBIA·Filed 1976·Granted Jul 18, 1978·5 cites·10 claims
- 3741USD256913STurntable for record playerNIPPON COLUMBIA·Filed 1977·Granted Sep 16, 1980·2 cites·1 claims
- 3840US4175461AElectromagnetic pickup deviceNIPPON COLUMBIA·Filed 1977·Granted Nov 27, 1979·5 cites·5 claims
- 3939US5457457ADigital to analog conversion device which decreases low level high frequency noiseNIPPON COLUMBIA·Filed 1993·Granted Oct 10, 1995·7 cites·3 claims
- 4039US4161631APickup cartridgeNIPPON COLUMBIA·Filed 1978·Granted Jul 17, 1979·8 cites·2 claims
- 4139US3977021AColor video disc, apparatus for making the same and reproducing apparatus thereforNIPPON COLUMBIA·Filed 1974·Granted Aug 24, 1976·5 cites·3 claims
- 4237US4133494ATape driving apparatusNIPPON COLUMBIA·Filed 1977·Granted Jan 9, 1979·4 cites·6 claims
- 4336USD253410SPhonograph tone armNIPPON COLUMBIA·Filed 1977·Granted Nov 13, 1979·1 cites·1 claims
- 4436US2003058139A1Electronic devices having operating buttonsNIPPON COLUMBIA·Filed 2002·Application pending·0 cites
- 4535US5966367AOptical information recording mediumNIPPON COLUMBIA·Filed 1998·Granted Oct 12, 1999·3 cites·6 claims
- 4635US4447790ADistortion eliminating circuitNIPPON COLUMBIA·Filed 1981·Granted May 8, 1984·6 cites·7 claims
- 4735US4115666ADiscrete 4-channel stereo recording and/or reproducing system compatible with matrix systemsNIPPON COLUMBIA·Filed 1976·Granted Sep 19, 1978·8 cites·3 claims
- 4833US4209669APick-up cartridgeNIPPON COLUMBIA·Filed 1978·Granted Jun 24, 1980·2 cites·9 claims
- 4930US6317045B1Reproducing deviceNIPPON COLUMBIA·Filed 1999·Granted Nov 13, 2001·6 cites·5 claims
- 5030US4825304ARecording disc with sync information disposed in radial alignmentNIPPON COLUMBIA·Filed 1988·Granted Apr 25, 1989·0 cites·4 claims
Showing the top 50 of 60 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when NIPPON COLUMBIA files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →