Inventor · disambiguated record
Tamotsu Yamagami
Also filed as: YAMAGAMI TAMOTSU
85 granted patents·2 pending applications·2,047 citations·filing 1980–2017
99Inventor score
Files withSONY CORP77KOBAYASHI SHOEI3KONINKL PHILIPS ELECTRONICS NV3KISHIMOTO TADAMITSU2KINOSHITA TOSHIRO1
Top patents by PatentIndex Score
87 records- 0198US5886985AOptical recording medium having a plurality of sectors separated by sync signalsSONY CORP·Filed 1997·Granted Mar 23, 1999·150 cites·20 claims
- 0296US6277832B1Growth inhibitor for leukemia cells comprising antisense oligonucleotide derivative to wilms tumor gene (wt1)KISHIMOTO TADAMITSU·Filed 2000·Granted Aug 21, 2001·89 cites·4 claims
- 0396US4788685AApparatus for recording and reproducing dataSONY CORP·Filed 1987·Granted Nov 29, 1988·67 cites·11 claims
- 0495US5878024AOptical disc, apparatus and method for recording and reproducing dataSONY CORP·Filed 1997·Granted Mar 2, 1999·82 cites·19 claims
- 0595US5805564AOptical disk capable of detecting errors in address area and correcting errors in data area and recording method and apparatus thereforSONY CORP·Filed 1996·Granted Sep 8, 1998·90 cites·7 claims
- 0694US5835461AOptical disc, apparatus and method for recording and reproducing dataSONY CORP·Filed 1997·Granted Nov 10, 1998·65 cites·6 claims
- 0793US5148422AOptical recording medium having a data recording track with offset data storing regionsSONY CORP·Filed 1990·Granted Sep 15, 1992·66 cites·14 claims
- 0892US6256282B1Optical recording medium and recording method thereofSONY CORP·Filed 1998·Granted Jul 3, 2001·74 cites·10 claims
- 0992US5835478AOptical disc having address information for recording and reproducing data at correct positionsSONY CORP·Filed 1996·Granted Nov 10, 1998·55 cites·13 claims
- 1091US5835509AMethod of and apparatus for recording and reproducing data and transmitting dataSONY CORP·Filed 1995·Granted Nov 10, 1998·69 cites·24 claims
- 1191US5363352AMagneto-optic disk apparatusSONY CORP·Filed 1993·Granted Nov 8, 1994·52 cites·6 claims
- 1290US5216656AMethod for recording a cd-ram which is compatible with a conventional cd recording format while allowing fast accessingSONY CORP·Filed 1991·Granted Jun 1, 1993·51 cites·8 claims
- 1389US7123557B2Disc-shaped recording medium disc driving device and method and apparatus for producing discSONY CORP·Filed 2002·Granted Oct 17, 2006·27 cites·31 claims
- 1487US7221644B2Disc-shaped recording medium, disc driving device and disc producing methodKONINKL PHILIPS ELECTRONICS NV·Filed 2003·Granted May 22, 2007·23 cites·27 claims
- 1586US5831954AData recording/reproducing apparatus and method corresponding to a plurality of data formats, and data recording mediumSONY CORP·Filed 1996·Granted Nov 3, 1998·37 cites·30 claims
- 1685US7414932B2Method of, and apparatus for, recording address information to disc mediumSONY CORP·Filed 2006·Granted Aug 19, 2008·4 cites·12 claims
- 1785US6034235AGrowth inhibitor for leukemia cell comprising antisense oligonucleotide derivative to wilms tumor gene (WT1)KISHIMOTO TADAMITSU·Filed 1996·Granted Mar 7, 2000·58 cites·8 claims
- 1885US5815486AOptical disk, recording/reproducing apparatus and method for rapidly recording/reproducing data on/from an optical disk using gray codingSONY CORP·Filed 1996·Granted Sep 29, 1998·32 cites·3 claims
- 1984US4733385ASignal recording and reproducing apparatus for an opto-magnetic diskSONY CORP·Filed 1986·Granted Mar 22, 1988·30 cites·6 claims
- 2083US7274635B2Method and apparatus for recording address information on disc mediumSONY CORP·Filed 2002·Granted Sep 25, 2007·11 cites·6 claims
- 2183US5978333ARecording/reproducing apparatus and methodSONY CORP·Filed 1997·Granted Nov 2, 1999·36 cites·12 claims
- 2283US5436770ADisc recording and/or reproducing apparatus having an enlarged locking range for correctly phased internal channel clocksSONY CORP·Filed 1994·Granted Jul 25, 1995·34 cites·3 claims
- 2383US5170385ARecording medium with unembossed area indicating sector divisionsSONY CORP·Filed 1990·Granted Dec 8, 1992·34 cites·4 claims
- 2482US6335912B1Optical information recording apparatus, method for recording optical information, optical information recording medium, optical information processing apparatus, and method for accessing optical information recording mediumSONY CORP·Filed 2000·Granted Jan 1, 2002·16 cites·31 claims
- 2582US5587901AOptical recording medium having a pre-formed recording track which is offset along its width to record frame sync signals of informationSONY CORP·Filed 1990·Granted Dec 24, 1996·24 cites·12 claims
- 2682US5469416AApparatus for reproducing recorded data and selectively either of read-only or recorded synchronization information from a magneto-optical recording mediumSONY CORP·Filed 1994·Granted Nov 21, 1995·25 cites·7 claims
- 2782US5297125AOptical recording medium and information recording apparatus for recording bursts of low-pass filtered reproduce-only information in a wobbling pre-groove on the optical recording mediumSONY CORP·Filed 1992·Granted Mar 22, 1994·30 cites·3 claims
- 2882US4819236AData transmission method suitable for a discSONY CORP·Filed 1987·Granted Apr 4, 1989·36 cites·22 claims
- 2981US5287334AMagneto-optical pickup apparatus and magneto-optical recording/reproducing apparatusSONY CORP·Filed 1991·Granted Feb 15, 1994·32 cites·14 claims
- 3081US5200935ARecording apparatus using magneto-optical effect including control means for inhibiting energizing of the light beam generating means in responsive to coded dataSONY CORP·Filed 1990·Granted Apr 6, 1993·30 cites·7 claims
- 3180US9749048B2Connector system, connecting cable and receiving toolSONY CORP·Filed 2015·Granted Aug 29, 2017·2 cites·22 claims
- 3280US6147945ARecording/reproducing apparatus and methodSONY CORP·Filed 1999·Granted Nov 14, 2000·29 cites·7 claims
- 3380US4800549AMethod and apparatus for seeking target address with error check codeSONY CORP·Filed 1987·Granted Jan 24, 1989·24 cites·13 claims
- 3478US7861142B2Information recording disc, recording and/or reproducing device and methodSONY CORP·Filed 2007·Granted Dec 28, 2010·2 cites·10 claims
- 3578US7624331B2Information recording disc, recording and/or reproducing device and methodSONY CORP·Filed 2007·Granted Nov 24, 2009·2 cites·9 claims
- 3678US6661758B2High speed data recording and/or reproducing method and apparatus with increased sector access speedSONY CORP·Filed 2002·Granted Dec 9, 2003·9 cites·16 claims
- 3778US5497367AOptical recording mediumSONY CORP·Filed 1992·Granted Mar 5, 1996·26 cites·14 claims
- 3878US5155485ADigital modulating apparatus and digital demodulating apparatusSONY CORP·Filed 1990·Granted Oct 13, 1992·26 cites·9 claims
- 3977US6064639AHigh speed data recording and/or reproducing method and apparatus with increased data sector access speedSONY CORP·Filed 1999·Granted May 16, 2000·22 cites·26 claims
- 4077US5828639ARecording/playback device and method thereof, and discSONY CORP·Filed 1997·Granted Oct 27, 1998·30 cites·8 claims
- 4177US5488590AMagneto-optical overwrite recording and reproducing systemSONY CORP·Filed 1994·Granted Jan 30, 1996·25 cites·12 claims
- 4276US8270267B2Method of, and apparatus for, recording address information to disc mediumKOBAYASHI SHOEI·Filed 2011·Granted Sep 18, 2012·2 cites·5 claims
- 4375US5138598AOptical disk having relatively wide ram tracks and relatively narrow rom tracksSONY CORP·Filed 1991·Granted Aug 11, 1992·22 cites·9 claims
- 4475US4829497AOptical disc recording method and apparatus for digital data having a plurality of transmission ratesSONY CORP·Filed 1987·Granted May 9, 1989·20 cites·20 claims
- 4575US4539691AMethod and apparatus for encoding a binary digital information signalSONY CORP·Filed 1982·Granted Sep 3, 1985·18 cites·20 claims
- 4673US7616552B2Phase-change optical recording medium having first and second track pitchesKONINKL PHILIPS ELECTRONICS NV·Filed 2003·Granted Nov 10, 2009·8 cites·9 claims
- 4773US5978350AOptical disc and optical disc driving deviceSONY CORP·Filed 1995·Granted Nov 2, 1999·19 cites·24 claims
- 4872US4774698AOptical disc recording and reproducing apparatus with improved servo controlSONY CORP·Filed 1985·Granted Sep 27, 1988·18 cites·5 claims
- 4972US4409526ABrushless DC motorSONY CORP·Filed 1980·Granted Oct 11, 1983·21 cites·29 claims
- 5070US5966368AData recording diskSONY CORP·Filed 1997·Granted Oct 12, 1999·18 cites·4 claims
Showing the top 50 of 87 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Tamotsu Yamagami files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →