Inventor · disambiguated record
Junji Hirokane
Also filed as: HIROKANE JUNJI
118 granted patents·1 pending application·1,543 citations·filing 1984–2010
99Inventor score
Top patents by PatentIndex Score
119 records- 0198US7609605B2Optical storage medium, optical read/write apparatus, and optical read/write methodSHARP KK·Filed 2007·Granted Oct 27, 2009·42 cites·3 claims
- 0298US7586824B2Optical storage medium, optical read/write apparatus, and optical read/write methodSHARP KK·Filed 2007·Granted Sep 8, 2009·40 cites·2 claims
- 0397US7180849B2Optical storage medium enabling uniform light transmittance, optical read/write apparatus for same, and optical read/write method for sameSHARP KK·Filed 2002·Granted Feb 20, 2007·44 cites·18 claims
- 0493US4544443AMethod for manufacturing an optical memory elementSHAP KABUSHIKI KAISHA·Filed 1984·Granted Oct 1, 1985·54 cites·16 claims
- 0592US5933411AOptical recording medium having a wobbling section for recording address information and methods of recording and reproduction using sameSHARP KK·Filed 1997·Granted Aug 3, 1999·54 cites·23 claims
- 0689US5656385AMagnetic recording medium and information recording-reproduction method using the sameSHARP KK·Filed 1993·Granted Aug 12, 1997·30 cites·7 claims
- 0788US5659537AMagneto-optical recording medium and method of reproducing from sameSHARP KK·Filed 1995·Granted Aug 19, 1997·54 cites·15 claims
- 0887US6510129B1Optical recording medium, manufacturing method of optical recording medium master disk, and cutting device used thereforSHARP KK·Filed 2000·Granted Jan 21, 2003·18 cites·9 claims
- 0986US6762989B2Optical disk having groove address pits and land address pits of equal depthsSHARP KK·Filed 2002·Granted Jul 13, 2004·17 cites·7 claims
- 1086US6295271B1Optical recording medium having tracks, each track having a plurality of wobble sections/one-side wobble regionsSHARP KK·Filed 1999·Granted Sep 25, 2001·35 cites·22 claims
- 1186US5428585AMagneto-optical recording medium comprising first, second and third magnetic layers and method of recording on sameSHARP KK·Filed 1993·Granted Jun 27, 1995·40 cites·11 claims
- 1286US5128922AOptical disk with glass substrate and method of producing sameSHARP KK·Filed 1991·Granted Jul 7, 1992·38 cites·2 claims
- 1385US5644566AMagneto-optical recording mediumSHARP KK·Filed 1995·Granted Jul 1, 1997·44 cites·5 claims
- 1485US5087535AMethod of manufacturing photo-mask and photo-mask manufactured therebySHARP KK·Filed 1987·Granted Feb 11, 1992·27 cites·25 claims
- 1580US6545955B1Magneto-optic storage media and methods of reproducing the sameSHARP KK·Filed 2000·Granted Apr 8, 2003·14 cites·35 claims
- 1680US6122233AOptical disk having virtually constant width recording track and optical disk apparatusSHARP KK·Filed 1998·Granted Sep 19, 2000·33 cites·22 claims
- 1780US4610912AMagneto-optic memory elementSHARP KK·Filed 1984·Granted Sep 9, 1986·31 cites·15 claims
- 1879US5673250AOptical recording medium having pit rows on every other boundary and reproducing method thereofSHARP KK·Filed 1995·Granted Sep 30, 1997·26 cites·16 claims
- 1978US7933185B2Optical storage medium, optical read/write apparatus, and optical read/write methodSHARP KK·Filed 2010·Granted Apr 26, 2011·2 cites·2 claims
- 2076US6143436AMagnetic recording medium and information recording-reproduction method using the sameSHARP KK·Filed 1997·Granted Nov 7, 2000·21 cites·18 claims
- 2176US4917751AMethod of producing double sided optical memory disksSHARP KK·Filed 1989·Granted Apr 17, 1990·29 cites·5 claims
- 2276US4778747AMethod of manufacturing optical memory elementSHARP KK·Filed 1987·Granted Oct 18, 1988·20 cites·10 claims
- 2375US5640374AMagneto-optical recording medium having intermediate layer of in-plane magnetization and method of reproducing from the mediumSHARP KK·Filed 1996·Granted Jun 17, 1997·27 cites·17 claims
- 2474US6058100AOptical recording medium having pit rowsSHARP KK·Filed 1997·Granted May 2, 2000·21 cites·20 claims
- 2574US5982715AMagneto-optical recording medium having a signal reproducing region of the reproducing layer larger than the record bit in the recording layerSHARP KK·Filed 1998·Granted Nov 9, 1999·26 cites·42 claims
- 2673US6671234B1Magneto-optical storage media and method of reproducing the sameSHARP KK·Filed 2000·Granted Dec 30, 2003·9 cites·25 claims
- 2773US5170390AOptical recording element and driving systemSHARP KK·Filed 1989·Granted Dec 8, 1992·14 cites·18 claims
- 2872US5079113APhoto-maskSHARP KK·Filed 1989·Granted Jan 7, 1992·20 cites·5 claims
- 2971US6430115B1Magneto-optical recording device with three distinct layersSHARP KK·Filed 1999·Granted Aug 6, 2002·22 cites·30 claims
- 3071US6147939AMagneto-optical recording medium having intermediate layer of in-plane magnetizationSHARP KK·Filed 1998·Granted Nov 14, 2000·19 cites·64 claims
- 3169US5648162AMagneto-optical recording medium and a method of recording and/or reproducing using the sameSHARP KK·Filed 1993·Granted Jul 15, 1997·15 cites·23 claims
- 3268US6261707B1Magneto-optical recording medium and recording and reproducing method and optical head designed for the magneto-optical recording mediumSHARP KK·Filed 1993·Granted Jul 17, 2001·14 cites·26 claims
- 3368US5955191AMagneto-optical recording medium and a reproducing method using such a mediumSHARP KK·Filed 1997·Granted Sep 21, 1999·19 cites·25 claims
- 3468US5901118AMagneto-optical recording medium having a readout layer and a recording layerSHARP KK·Filed 1997·Granted May 4, 1999·20 cites·33 claims
- 3568US5633838AMagneto-optical recording medium having two reproduction layers and a method for reproducing thereofSHARP KK·Filed 1996·Granted May 27, 1997·20 cites·24 claims
- 3667US6872511B2Method for forming micropatternsSHARP KK·Filed 2002·Granted Mar 29, 2005·5 cites·24 claims
- 3767US4717628AMagnetooptical storage elementSHARP KK·Filed 1986·Granted Jan 5, 1988·20 cites·12 claims
- 3866US5939187AMagneto-optical recording mediumSHARP KK·Filed 1997·Granted Aug 17, 1999·18 cites·22 claims
- 3966US5680376AOptical recording medium, and apparatus and method for recording and reproducing information on the sameSHARP KK·Filed 1996·Granted Oct 21, 1997·16 cites·23 claims
- 4065US6665235B2Magneto-optical recording medium and recording and reproducing method and optical head designed for the magneto-optical recording mediumSHARP KK·Filed 2002·Granted Dec 16, 2003·7 cites·6 claims
- 4165US6463016B1Magneto-optical storage medium having in-plane magnetized layersSHARP KK·Filed 2000·Granted Oct 8, 2002·5 cites·37 claims
- 4265US5459711AOptical recording element and driving systemSHARP KK·Filed 1994·Granted Oct 17, 1995·11 cites·5 claims
- 4365US4839251APhoto-mask for use in manufacturing an optical memory disc, a method for making the photo-mask and a method for manufacturing the optical memory discSHARP KK·Filed 1987·Granted Jun 13, 1989·13 cites·10 claims
- 4464US7787345B2Optical storage medium, optical read/write apparatus, and optical read/write methodSHARP KK·Filed 2007·Granted Aug 31, 2010·0 cites·10 claims
- 4563US6456571B1Magneto-optical recording medium and reproducing method thereofSHARP KK·Filed 2000·Granted Sep 24, 2002·9 cites·13 claims
- 4663US6272077B1Magneto-optical recording medium having intermediate layer of in plane magnetizationSHARP KK·Filed 2000·Granted Aug 7, 2001·4 cites·12 claims
- 4763US5347510AMethod of manufacturing a master plate where its guide groove has an inclined angleSHARP KK·Filed 1993·Granted Sep 13, 1994·13 cites·15 claims
- 4863US5107486AOptical memory device with grooves and pits in selected dimensional relationshipSHARP KK·Filed 1990·Granted Apr 21, 1992·13 cites·3 claims
- 4963US4695514AMagneto-optical memory elementSHARP KK·Filed 1984·Granted Sep 22, 1987·10 cites·16 claims
- 5062US6826769B2Recording and reproducing device having a stabilizing board and vertically-oscillating sliderSHARP KK·Filed 2001·Granted Nov 30, 2004·4 cites·14 claims
Showing the top 50 of 119 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →