Inventor · disambiguated record
Takao Nakamura
Also filed as: NAKAMURA TAKAO · TORII YUKIO
170 granted patents·25 pending applications·2,303 citations·filing 1973–2022
99Inventor score
Files withSUMITOMO ELECTRIC INDUSTRIES99HITACHI LTD20NIPPON TELEGRAPH & TELEPHONE14YOSHIZUMI YUSUKE9NAKAMURA TAKAO5
Top patents by PatentIndex Score
195 records- 0197US7933303B2Group-III nitride semiconductor laser device, and method for fabricating group-III nitride semiconductor laser deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2010·Granted Apr 26, 2011·30 cites·20 claims
- 0295US6185312B1Method for embedding and reading watermark-information in digital form, and apparatus thereofNIPPON TELEGRAPH & TELEPHONE·Filed 1998·Granted Feb 6, 2001·384 cites·75 claims
- 0395US5202810AMagnetic disk having an improved surface configurationHITACHI LTD·Filed 1990·Granted Apr 13, 1993·76 cites·14 claims
- 0494US8227277B2Group-III nitride semiconductor laser device, and method of fabricating group-III nitride semiconductor laser deviceYOSHIZUMI YUSUKE·Filed 2011·Granted Jul 24, 2012·15 cites·9 claims
- 0593US7732236B2III nitride semiconductor crystal and manufacturing method thereof, III nitride semiconductor device manufacturing method thereof, and light emitting deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2005·Granted Jun 8, 2010·20 cites·14 claims
- 0692US8306082B2Group-III nitride semiconductor laser device, and method of fabricating group-III nitride semiconductor laser deviceYOSHIZUMI YUSUKE·Filed 2010·Granted Nov 6, 2012·12 cites·16 claims
- 0792US8304793B2III-nitride semiconductor optical device and epitaxial substrateYOSHIZUMI YUSUKE·Filed 2010·Granted Nov 6, 2012·13 cites·22 claims
- 0892US7851821B2Group III nitride semiconductor device, epitaxial substrate, and method of fabricating group III nitride semiconductor deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2010·Granted Dec 14, 2010·9 cites·29 claims
- 0992US6704431B1Method and apparatus for digital watermarkingNIPPON TELEGRAPH & TELEPHONE·Filed 1999·Granted Mar 9, 2004·106 cites·32 claims
- 1092US5388020AMagnetic disk having improved surface configuration and magnetic disk unit including sameHITACHI LTD·Filed 1992·Granted Feb 7, 1995·61 cites·7 claims
- 1191US9170463B2Liquid crystal display deviceJAPAN DISPLAY INC·Filed 2013·Granted Oct 27, 2015·10 cites·11 claims
- 1291US8563982B2Liquid crystal display deviceNAKAMURA TAKAO·Filed 2011·Granted Oct 22, 2013·12 cites·10 claims
- 1391US7072492B2Method and apparatus for digital watermarkingNIPPON TELEGRAPH & TELEPHONE·Filed 2003·Granted Jul 4, 2006·48 cites·8 claims
- 1490US7970164B2Digital watermark padding method, digital watermark padding device, digital watermark detecting method, digital watermark detecting device, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2006·Granted Jun 28, 2011·22 cites·86 claims
- 1589US6876003B1Semiconductor light-emitting device, method of manufacturing transparent conductor film and method of manufacturing compound semiconductor light-emitting deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2000·Granted Apr 5, 2005·67 cites·12 claims
- 1688US8208683B2Digital watermark embedding method, apparatus and storage medium for reducing image quality deterioration and increasing detection reliabilityYAMAMOTO SUSUMU·Filed 2007·Granted Jun 26, 2012·10 cites·11 claims
- 1788US7858963B2Nitride based semiconductor optical device, epitaxial wafer for nitride based semiconductor optical device, and method of fabricating semiconductor light-emitting deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2010·Granted Dec 28, 2010·6 cites·11 claims
- 1887US8546163B2Group-III nitride semiconductor laser device, and method for fabricating group-III nitride semiconductor laser deviceYOSHIZUMI YUSUKE·Filed 2011·Granted Oct 1, 2013·6 cites·10 claims
- 1987US6793216B2Sheet material conveying device and image forming apparatus provided with such deviceCANON KK·Filed 2002·Granted Sep 21, 2004·23 cites·21 claims
- 2087US5364655ASimultaneous double sides polishing methodHITACHI LTD·Filed 1992·Granted Nov 15, 1994·48 cites·9 claims
- 2186US10837544B2Axle assemblyKOMATSU MFG CO LTD·Filed 2017·Granted Nov 17, 2020·6 cites·18 claims
- 2286US8741674B2Group-III nitride semiconductor laser device, and method for fabricating group-III nitride semiconductor laser deviceYOSHIZUMI YUSUKE·Filed 2011·Granted Jun 3, 2014·6 cites·10 claims
- 2385US8605939B2Electronic watermark embedding method, device, and program, and electronic watermark detecting method, device, and programYAMAMOTO SUSUMU·Filed 2011·Granted Dec 10, 2013·5 cites·6 claims
- 2484US8053806B2Group III nitride semiconductor device and epitaxial substrateSUMITOMO ELECTRIC INDUSTRIES·Filed 2010·Granted Nov 8, 2011·4 cites·24 claims
- 2584US7489796B2Electronic watermark embedding device, electronic watermark detection device, method thereof, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2005·Granted Feb 10, 2009·12 cites·20 claims
- 2684US5353182AMagnetic disk unit having magnetic disks and a magnetic head with a head slider which is in contact with surfaces of the magnetic diskHITACHI LTD·Filed 1992·Granted Oct 4, 1994·31 cites·9 claims
- 2784US5321177AProcess for the vapor-phase thermal cracking of dicyclopentadiene and a process for the manufacture of high purity dicyclopentadieneMARUZEN PETROCHEM CO LTD·Filed 1992·Granted Jun 14, 1994·28 cites·6 claims
- 2884US4430387ABase plate for magnetic recording discHITACHI LTD·Filed 1980·Granted Feb 7, 1984·46 cites·14 claims
- 2983US8126202B2Digital watermark padding method, digital watermark padding device, digital watermark detecting method, digital watermark detecting device, and programNAKAMURA TAKAO·Filed 2011·Granted Feb 28, 2012·8 cites·40 claims
- 3083US4177307AThermal shock resistant ceramic honeycomb structuresNGK INSULATORS LTD·Filed 1978·Granted Dec 4, 1979·34 cites·7 claims
- 3182US7164778B1Digital watermark embedding method, digital watermark embedding apparatus, and storage medium storing a digital watermark embedding programNIPPON TELEGRAPH & TELEPHONE·Filed 1999·Granted Jan 16, 2007·53 cites·20 claims
- 3281US7190004B2Light emitting deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2004·Granted Mar 13, 2007·32 cites·162 claims
- 3380US6871946B2Recording apparatusCANON KK·Filed 2003·Granted Mar 29, 2005·19 cites·21 claims
- 3479US9004673B2Conveyance controller, printing apparatus, method of conveying printing medium, and printing medium conveyance apparatusHAKAMATA KEISEI·Filed 2011·Granted Apr 14, 2015·3 cites·15 claims
- 3579US7482934B2Communication device and communication methodFUJITSU LTD·Filed 2007·Granted Jan 27, 2009·14 cites·4 claims
- 3679US6945528B2Sheet feeding apparatus and image forming apparatusCANON KK·Filed 2002·Granted Sep 20, 2005·15 cites·8 claims
- 3778US6724018B2Zn1-xMgxSySe1-y pin-photodiode and Zn1-xMgxSySe1-y avalanche-photodiodeSUMITOMO ELECTRIC INDUSTRIES·Filed 2002·Granted Apr 20, 2004·25 cites·22 claims
- 3878US5556472AFilm deposition apparatusSUMITOMO ELECTRIC INDUSTRIES·Filed 1995·Granted Sep 17, 1996·62 cites·5 claims
- 3977US7672474B2Electronic watermark embedding device, electronic watermark detection device, method thereof, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2005·Granted Mar 2, 2010·11 cites·6 claims
- 4077US6693728B1Recording apparatusCANON KK·Filed 2000·Granted Feb 17, 2004·15 cites·19 claims
- 4177US5674813AProcess for preparing layered structure including oxide super conductor thin filmSUMITOMO ELECTRIC INDUSTRIES·Filed 1996·Granted Oct 7, 1997·37 cites·6 claims
- 4276US7687822B2Light emitting apparatusSUMITOMO ELECTRIC INDUSTRIES·Filed 2007·Granted Mar 30, 2010·6 cites·2 claims
- 4376US6936847B2Display device with an improved contact hole arrangement for contacting a semiconductor layer through an insulation filmHITACHI LTD·Filed 2003·Granted Aug 30, 2005·18 cites·15 claims
- 4476US5642114AVariable length code decoder using a content addressable memory with match inhibiting gateOKI ELECTRIC IND CO LTD·Filed 1994·Granted Jun 24, 1997·39 cites·17 claims
- 4575US8620018B2Electronic watermark embedding method, device, and program, and electronic watermark detecting method, device, and programYAMAMOTO SUSUMU·Filed 2011·Granted Dec 31, 2013·2 cites·24 claims
- 4675US8207556B2Group III nitride semiconductor device and epitaxial substrateKYONO TAKASHI·Filed 2011·Granted Jun 26, 2012·2 cites·28 claims
- 4775US7851243B1Nitride based semiconductor optical device, epitaxial wafer for nitride based semiconductor optical device, and method of fabricating semiconductor light-emitting deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2010·Granted Dec 14, 2010·2 cites·1 claims
- 4875US7294867B2Semiconductor light generating deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2005·Granted Nov 13, 2007·11 cites·23 claims
- 4974US9806494B2Optical module and method for manufacturing the optical moduleSUMITOMO ELECTRIC INDUSTRIES·Filed 2016·Granted Oct 31, 2017·2 cites·13 claims
- 5074US8476615B2GaN-based semiconductor light emitting device and the method for making the sameENYA YOHEI·Filed 2011·Granted Jul 2, 2013·3 cites·18 claims
Showing the top 50 of 195 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →