Inventor · disambiguated record
Masakuni Yamamoto
Also filed as: YAMAMOTO MASAKUNI
49 granted patents·11 pending applications·998 citations·filing 1988–2023
98Inventor score
Top patents by PatentIndex Score
60 records- 0197US6999398B2Method and apparatus for recording information on information recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Feb 14, 2006·117 cites·7 claims
- 0294US5610897AOptical information reproducing apparatusCANON KK·Filed 1995·Granted Mar 11, 1997·96 cites·28 claims
- 0394US5280160ARecording and reproducing method and apparatus compensating for predicted deviation based on detected relative skewing of recording mediumCANON KK·Filed 1993·Granted Jan 18, 1994·75 cites·17 claims
- 0491US5365535ASemiconductor laser and beam splitting devices, and optical information recording/reproducing, optical communication, and optomagnetic recording/reproducing apparatuses using semiconductor laser and beam splitting devicesCANON KK·Filed 1993·Granted Nov 15, 1994·55 cites·22 claims
- 0586US5786117AMedium and related method and apparatus for recording and reproducing information in cells using multiple interferenceCANON KK·Filed 1994·Granted Jul 28, 1998·39 cites·10 claims
- 0685US5539718AOptical head for controlling light irradiation in a magneto-optical recording and/or reproducing apparatusCANON KK·Filed 1993·Granted Jul 23, 1996·36 cites·11 claims
- 0785US5428586AMagneto-optical recording method using a magneto-optical recording medium having two or more magnetic layers to allow recording and reproduction to be effected simultaneously and magneto-optical recording medium used in the methodCANON KK·Filed 1994·Granted Jun 27, 1995·39 cites·8 claims
- 0882US5555231AInformation recording method, method for reproducing recorded information, and apparatus thereforCANON KK·Filed 1994·Granted Sep 10, 1996·31 cites·25 claims
- 0982US5233578AMethod of recording information on a recording medium having at least two magnetic layersCANON KK·Filed 1992·Granted Aug 3, 1993·32 cites·27 claims
- 1080US5475669AInformation reproducing method and apparatus for counting the number of errors and warningCANON KK·Filed 1994·Granted Dec 12, 1995·27 cites·12 claims
- 1178US6249489B1Information recording-reproducing method utilizing domain wall displacement, and magneto optical mediumCANON KK·Filed 1998·Granted Jun 19, 2001·31 cites·11 claims
- 1278US5627582AStereoscopic compression processing with added phase referenceCANON KK·Filed 1994·Granted May 6, 1997·44 cites·6 claims
- 1378US5450376AOptical information recording/reproduction apparatus with super-resolution optical filterCANON KK·Filed 1993·Granted Sep 12, 1995·26 cites·33 claims
- 1478US5329517AOptical information recording and reproducing apparatus utilizing a plurality of recording light spotsCANON KK·Filed 1993·Granted Jul 12, 1994·26 cites·15 claims
- 1578US5199023AOptical information recording medium with a separating part between information tracksCANON KK·Filed 1989·Granted Mar 30, 1993·22 cites·10 claims
- 1675US5517471AMethod and apparatus for verifying recording data and for determining recording error using a detected light amountCANON KK·Filed 1992·Granted May 14, 1996·24 cites·16 claims
- 1774US7573798B2Multi-level information reproducing methodCANON KK·Filed 2006·Granted Aug 11, 2009·2 cites·2 claims
- 1874US5577017AMagnetooptical information recording/reproducing apparatusCANON KK·Filed 1995·Granted Nov 19, 1996·23 cites·17 claims
- 1973US7778133B2Optical Information recording/reproducing apparatusCANON KK·Filed 2007·Granted Aug 17, 2010·2 cites·5 claims
- 2071US8114803B2Catalyst material and process for preparing the sameYUASA MAKOTO·Filed 2006·Granted Feb 14, 2012·6 cites·33 claims
- 2171US5297128AOptical information recording/reproducing apparatus including means for varying intensity of a preheating light beamCANON KK·Filed 1992·Granted Mar 22, 1994·18 cites·28 claims
- 2268US7706243B2Method and apparatus for reproducing optical informationCANON KK·Filed 2007·Granted Apr 27, 2010·1 cites·7 claims
- 2368US5333125AOptical information processing apparatus having a neural network for inducing an error signalCANON KK·Filed 1993·Granted Jul 26, 1994·17 cites·31 claims
- 2465US6298015B1Magneto-optical reproducing method using a magnified magnetic domainCANON KK·Filed 1999·Granted Oct 2, 2001·17 cites·8 claims
- 2565US5956296AInformation reproducing apparatus for reproducing information by magnetic wall movementCANON KK·Filed 1997·Granted Sep 21, 1999·17 cites·9 claims
- 2664US5712840AOptical information recording/reproduciing apparatus having two-division detectorsCANON KK·Filed 1994·Granted Jan 27, 1998·14 cites·19 claims
- 2763US6022932AProcess for producing vinyl chloride polymer, with iron chelates in coated vesselSHINETSU CHEMICAL CO·Filed 1997·Granted Feb 8, 2000·15 cites·4 claims
- 2863US2023311712A1Information processing device and vehicleHONDA MOTOR CO LTD·Filed 2023·Application pending·0 cites
- 2962US5717506AImage communication apparatus for communicating binary and multi-value color image dataCANON KK·Filed 1995·Granted Feb 10, 1998·26 cites·19 claims
- 3061US7738338B2Optical information reproducing methodCANON KK·Filed 2007·Granted Jun 15, 2010·0 cites·2 claims
- 3158US6355743B1Process for producing vinyl chloride polymer in the presence of a chelating agentSHINETSU CHEMICAL CO·Filed 1999·Granted Mar 12, 2002·11 cites·9 claims
- 3258US4912694AInformation reproducing method and apparatus including comparison of a parity valve counted by a flip-flop with a parity bit attached to a data unitCANON KK·Filed 1988·Granted Mar 27, 1990·10 cites·10 claims
- 3357US5768219AOptical information recording/reproducing apparatus that produces verifying reproduction signals by executing a computation using detection signals of multi-divided detection surfaces of a photo-detectorCANON KK·Filed 1996·Granted Jun 16, 1998·11 cites·12 claims
- 3456US6104676AApparatus for reproducing magneto-optical information utilizing magnetic domain displacement, method therefor, and method for information recordingCANON KK·Filed 1998·Granted Aug 15, 2000·11 cites·9 claims
- 3554US7593302B2Recording strategy in multilevel recordingCANON KK·Filed 2006·Granted Sep 22, 2009·0 cites·15 claims
- 3653US5051974AOptical head device having a light splitter with a diffraction grating structureCANON KK·Filed 1989·Granted Sep 24, 1991·15 cites·11 claims
- 3753US2009002353A1Display apparatus and drive method thereofCANON KK·Filed 2008·Application pending·0 cites
- 3852US7848200B2Method and apparatus of reproducing multilevel informationCANON KK·Filed 2007·Granted Dec 7, 2010·0 cites·17 claims
- 3951US7808873B2Optical information reproducing methodCANON KK·Filed 2010·Granted Oct 5, 2010·0 cites·2 claims
- 4051US7808874B2Optical information reproducing methodCANON KK·Filed 2010·Granted Oct 5, 2010·0 cites·2 claims
- 4151US7804754B2Optical information recording/reproducing methodCANON KK·Filed 2006·Granted Sep 28, 2010·0 cites·9 claims
- 4251US5717675AOptical headCANON KK·Filed 1996·Granted Feb 10, 1998·9 cites·15 claims
- 4351US5581532AOptical information recording/reproducing apparatus for accurately detecting magnetic domain edgesCANON KK·Filed 1993·Granted Dec 3, 1996·9 cites·25 claims
- 4450US2011012136A1Display apparatusCANON KK·Filed 2008·Application pending·0 cites
- 4550US2008056091A1Multivalued information recording reproducing methodCANON KK·Filed 2007·Application pending·0 cites
- 4649US5956297ASignal reproducing apparatus using movement of magnetic wallCANON KK·Filed 1997·Granted Sep 21, 1999·8 cites·4 claims
- 4748US7599272B2Method and apparatus for recording and reproducing multi-level informationCANON KK·Filed 2005·Granted Oct 6, 2009·0 cites·4 claims
- 4848US2007025217A1Method and apparatus for detecting phase error information in multilevel recording/reproduction systemCANON KK·Filed 2006·Application pending·0 cites
- 4947US2010015506A1Catalyst material and process for preparing the sameTOYOTA MOTOR CO LTD·Filed 2008·Application pending·0 cites
- 5045US5777974AOptical head and magneto-optical reproducing apparatus using the sameCANON KK·Filed 1996·Granted Jul 7, 1998·6 cites·24 claims
Showing the top 50 of 60 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →