Inventor · disambiguated record
Koujirou Sekine
Also filed as: SEKINE KOUJIROU
25 granted patents·18 pending applications·117 citations·filing 2000–2018
94Inventor score
Files withKONICA MINOLTA INC13KONICA MINOLTA OPTO INC7MINOLTA CO LTD5SEKINE KOUJIROU5KONICA MINOLTA HOLDINGS INC3
Top patents by PatentIndex Score
43 records- 0193US6822796B2Diffractive optical elementMINOLTA CO LTD·Filed 2001·Granted Nov 23, 2004·67 cites·31 claims
- 0278US10727402B2Method for producing tunnel magnetoresistive elementUNIV TOHOKU·Filed 2018·Granted Jul 28, 2020·2 cites·5 claims
- 0378US8274866B2Optical recording head and optical recording apparatusSEKINE KOUJIROU·Filed 2010·Granted Sep 25, 2012·5 cites·18 claims
- 0477US8604504B2Organic light-emitting elementSEKINE KOUJIROU·Filed 2011·Granted Dec 10, 2013·4 cites·12 claims
- 0573US6853760B2Optical functional device and optical integrated deviceMINOLTA CO LTD·Filed 2001·Granted Feb 8, 2005·15 cites·30 claims
- 0672US7755978B2Recording head and recorderKONICA MINOLTA OPTO INC·Filed 2007·Granted Jul 13, 2010·2 cites·30 claims
- 0771US7385761B2Diffraction grating device and optical apparatusKONICA MINOLTA HOLDINGS INC·Filed 2007·Granted Jun 10, 2008·4 cites·4 claims
- 0867US7944780B2Magnetic recording device and magnetic recording head drive mechanism having a magnetic applying section of a specific lengthKONICA MINOLTA OPTO INC·Filed 2007·Granted May 17, 2011·1 cites·14 claims
- 0966US8072847B2Optical device, optically heat assisted magnetic recording head and optically heat assisted magnetic recording apparatus, having intensity point deviated from axis of the coreSEKINE KOUJIROU·Filed 2009·Granted Dec 6, 2011·1 cites·27 claims
- 1063US10094534B2Surface-emitting unit having dimming regionsKONICA MINOLTA INC·Filed 2014·Granted Oct 9, 2018·1 cites·5 claims
- 1162US9806294B2Surface light emitting elementKONICA MINOLTA INC·Filed 2014·Granted Oct 31, 2017·1 cites·9 claims
- 1258US7056037B2Optical bidirectional moduleKONICA MINOLTA HOLDINGS INC·Filed 2004·Granted Jun 6, 2006·6 cites·9 claims
- 1358US6466708B2Optical module and manufacturing method thereofMINOLTA CO LTD·Filed 2000·Granted Oct 15, 2002·6 cites·9 claims
- 1457US8345515B2Deflection optical element, optical recording head and optical recording apparatusKONICA MINOLTA OPTO INC·Filed 2009·Granted Jan 1, 2013·0 cites·11 claims
- 1557US7199926B2Diffraction grating device and optical apparatusKONICA MINOLTA HOLDINGS INC·Filed 2005·Granted Apr 3, 2007·1 cites·5 claims
- 1653US11652243B2Non-destructive inspection methodKONICA MINOLTA INC·Filed 2018·Granted May 16, 2023·0 cites·5 claims
- 1753US10115932B2Method of designing electroluminescent device, electroluminescent device manufactured with the design method, and method of manufacturing electroluminescent device with the design methodKONICA MINOLTA INC·Filed 2017·Granted Oct 30, 2018·0 cites·7 claims
- 1853US8134893B2Optical recording head and optical recording apparatusKONNO KENJI·Filed 2007·Granted Mar 13, 2012·0 cites·16 claims
- 1953US2007230323A1Recording head and recorderNISHIDA NAOKI·Filed 2007·Application pending·0 cites
- 2051US2011075526A1Optical Element, Arm Mechanism, and Information Recording DeviceSEKINE KOUJIROU·Filed 2009·Application pending·0 cites
- 2151US2011134740A1Optical Device, Optical Recording Head and Optical Recording DeviceSEKINE KOUJIROU·Filed 2009·Application pending·0 cites
- 2250US11237227B2Magnetic sensorKONICA MINOLTA INC·Filed 2018·Granted Feb 1, 2022·0 cites·9 claims
- 2350US2008049563A1Optical element and optical headKONICA MINOLTA OPTO INC·Filed 2007·Application pending·0 cites
- 2449US2008002529A1Optical head and optical recording apparatusKONICA MINOLTA OPTO INC·Filed 2007·Application pending·0 cites
- 2548US10541382B2Electroluminescent device capable of preventing coloration of front reflected lightKONICA MINOLTA INC·Filed 2016·Granted Jan 21, 2020·0 cites·16 claims
- 2648US2011019510A1Recording head and recorderKONICA MINOLTA OPTO INC·Filed 2010·Application pending·0 cites
- 2748US2016204384A1Electroluminescent Element and Lighting Apparatus Including SameKONICA MINOLTA INC·Filed 2013·Application pending·0 cites
- 2848US2009303858A1Optical recording head, magneto-optical recording head and optical recording apparatusKONICA MINOLTA OPTO INC·Filed 2007·Application pending·0 cites
- 2948US2011128829A1Optical Recording Head And Optical Recording ApparatusNISHIDA NAOKI·Filed 2009·Application pending·0 cites
- 3047US9893324B2Method of designing electroluminescent device, electroluminescent device manufactured with the design method, and method of manufacturing electroluminescent device with the design methodKONICA MINOLTA INC·Filed 2015·Granted Feb 13, 2018·0 cites·7 claims
- 3147US2012069721A1Recording head and recorderNISHIDA NAOKI·Filed 2011·Application pending·0 cites
- 3246US2010208557A1Optical Head and Optical Recording DeviceKUISEKO MANAMI·Filed 2008·Application pending·0 cites
- 3345US7038852B2Polarization conversion optical system and polarization conversion elementMINOLTA CO LTD·Filed 2001·Granted May 2, 2006·1 cites·18 claims
- 3445US2016312964A1Surface Emitting UnitKONICA MINOLTA INC·Filed 2014·Application pending·0 cites
- 3543US10892402B2Magnetoresistive element, and production method for magnetoresistive elementUNIV TOHOKU·Filed 2018·Granted Jan 12, 2021·0 cites·13 claims
- 3642US2020229782A1Non-Destructive Inspection MethodKONICA MINOLTA INC·Filed 2018·Application pending·0 cites
- 3740US2007075318A1Two-dimensional photonic crystal surface-emitting laserJAPAN SCIENCE & TECH AGENCY·Filed 2004·Application pending·0 cites
- 3839US6807330B2Optical switch using an optical waveguideMINOLTA CO LTD·Filed 2002·Granted Oct 19, 2004·0 cites·17 claims
- 3938US2019288227A1Organic electro-luminescence emission deviceKONICA MINOLTA INC·Filed 2017·Application pending·0 cites
- 4037US2011292774A1Near-field light emitting device, optical recording head and optical recorderOSAWA KOU·Filed 2009·Application pending·0 cites
- 4136US9869808B2Planar light-emitting unitKONICA MINOLTA INC·Filed 2015·Granted Jan 16, 2018·0 cites·20 claims
- 4234US2016359143A1Electroluminescent DeviceKONICA MINOLTA INC·Filed 2016·Application pending·0 cites
- 4332US2012092973A1Light spot forming element, optical recording head, and optical recording deviceIMADA MASAHIRO·Filed 2010·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Koujirou Sekine 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 →