Inventor · disambiguated record
Takayuki Iijima
Also filed as: IIJIMA TAKAYUKI
57 granted patents·12 pending applications·568 citations·filing 1986–2022
98Inventor score
Files withSEIKO EPSON CORP17PIONEER CORP10KONICA MINOLTA INC9PIONEER ELECTRONIC CORP7SUMITOMO CHEMICAL CO5
Top patents by PatentIndex Score
69 records- 0195US6634742B2Recording head unitSEIKO EPSON CORP·Filed 2001·Granted Oct 21, 2003·64 cites·50 claims
- 0294US10144796B2Polymerizable composition, optical member, plastic lens, and eyeglass lensHOYA LENS THAILAND LTD·Filed 2016·Granted Dec 4, 2018·4 cites·14 claims
- 0391USD489754SInkjet printerSEIKO EPSON CORP·Filed 2002·Granted May 11, 2004·44 cites·1 claims
- 0489US11358951B2Π(PI)-conjugated compound, organic electroluminescence element material, light-emitting material, light-emitting thin film, organic electroluminescence element, display device, and illumination deviceKONICA MINOLTA INC·Filed 2016·Granted Jun 14, 2022·5 cites·8 claims
- 0588US9972802B2Organic electroluminescent elementKONICA MINOLTA INC·Filed 2013·Granted May 15, 2018·7 cites·15 claims
- 0687US7300142B1Ink cartridge for ink-jet printing apparatusSEIKO EPSON CORP·Filed 1999·Granted Nov 27, 2007·44 cites·77 claims
- 0783US10651395B2Organic electroluminescent element, display device, and illumination deviceKONICA MINOLTA INC·Filed 2016·Granted May 12, 2020·2 cites·19 claims
- 0883US9536633B2Metallic composite and composition thereofHIGASHIMURA HIDEYUKI·Filed 2010·Granted Jan 3, 2017·10 cites·25 claims
- 0983US6206499B1Ink-jet recording headSEIKO EPSON CORP·Filed 1999·Granted Mar 27, 2001·45 cites·27 claims
- 1082US6285634B1Bias voltage controlling apparatus, information reproducing apparatus and information recording apparatusPIONEER CORP·Filed 2000·Granted Sep 4, 2001·18 cites·7 claims
- 1181US6335910B1Information recording apparatus capable of avoiding erroneous recording of information in the event of external disturbances due to movementPIONEER ELECTRONIC CORP·Filed 1999·Granted Jan 1, 2002·37 cites·41 claims
- 1278US10935918B2Printing apparatusSEIKO EPSON CORP·Filed 2018·Granted Mar 2, 2021·1 cites·5 claims
- 1377US7871156B2Ink cartridge for ink-jet printing apparatusSEIKO EPSON CORP·Filed 2007·Granted Jan 18, 2011·3 cites·2 claims
- 1476US6801489B2Apparatus for reproducing informationPIONEER CORP·Filed 2002·Granted Oct 5, 2004·11 cites·4 claims
- 1573US9758688B2Composition for forming conductive filmSUMITOMO CHEMICAL CO·Filed 2013·Granted Sep 12, 2017·1 cites·16 claims
- 1673US6626524B2Ink jet recording head provided with a vibrator unitSEIKO EPSON CORP·Filed 2001·Granted Sep 30, 2003·14 cites·20 claims
- 1771USD895004SPrinterSEIKO EPSON CORP·Filed 2019·Granted Sep 1, 2020·11 cites·1 claims
- 1871US6731574B1Focus servo controlling apparatus, information reproducing apparatus and information recording apparatusPIONEER CORP·Filed 2000·Granted May 4, 2004·8 cites·23 claims
- 1971US6382778B1Ink jet recording head and method of manufacturing the sameSEIKO EPSON CORP·Filed 2000·Granted May 7, 2002·13 cites·27 claims
- 2071US4991014AKey signal producing apparatus for video picture compositionNEC CORP·Filed 1988·Granted Feb 5, 1991·23 cites·12 claims
- 2170US10711091B2Light-emitting device and method for producing sameSUMITOMO CHEMICAL CO·Filed 2017·Granted Jul 14, 2020·1 cites·7 claims
- 2268US2025129243A1Resin composition, and curable film and laminated plate containing sameMITSUBISHI GAS CHEMICAL CO·Filed 2022·Application pending·0 cites
- 2367USD516622SPrinterSEIKO EPSON CORP·Filed 2004·Granted Mar 7, 2006·14 cites·1 claims
- 2466US7145839B2Apparatus for editing management information to be recorded on an information storage mediumPIONEER CORP·Filed 2001·Granted Dec 5, 2006·4 cites·10 claims
- 2566US5109365ARecord information reproducing method with content identifiersPIONEER ELECTRONIC CORP·Filed 1986·Granted Apr 28, 1992·15 cites·11 claims
- 2666US4939712AMultiple track and reversing address search method for use in a disk player systemPIONEER ELECTRONIC CORP·Filed 1988·Granted Jul 3, 1990·14 cites·5 claims
- 2764US5554966ACar-stereo with removable control panel, alarm, and power conservationPIONEER ELECTRONIC CORP·Filed 1993·Granted Sep 10, 1996·29 cites·3 claims
- 2863US4823056APulse-width modulation drive circuitPIONEER ELECTRONIC CORP·Filed 1986·Granted Apr 18, 1989·25 cites·16 claims
- 2962US9412487B2Silver-(conjugated compound) compositeIIJIMA TAKAYUKI·Filed 2010·Granted Aug 9, 2016·1 cites·17 claims
- 3061US12023804B2Robot arm and robot systemSEIKO EPSON CORP·Filed 2022·Granted Jul 2, 2024·0 cites·15 claims
- 3161USD523069SPrinterSEIKO EPSON CORP·Filed 2003·Granted Jun 13, 2006·11 cites·1 claims
- 3259US10465036B2Polymerizable composition, transparent resin, optical material, plastic lens, and method for manufacturing transparent resinHOYA LENS THAILAND LTD·Filed 2015·Granted Nov 5, 2019·0 cites·9 claims
- 3359US10106640B2Polymerizable composition, transparent resin, optical material, plastic lens, and method for manufacturing transparent resinHOYA LENS THAILAND LTD·Filed 2015·Granted Oct 23, 2018·0 cites·11 claims
- 3458US5573326AOptical axis adjusting device of vehicle lampICHIKOH INDUSTRIES LTD·Filed 1995·Granted Nov 12, 1996·18 cites·13 claims
- 3557US6296351B1Ink jet recording head with narrowed reservoir endsSEIKO EPSON CORP·Filed 1999·Granted Oct 2, 2001·15 cites·11 claims
- 3652US6598962B2Ink jet recording headSEIKO EPSON CORP·Filed 2001·Granted Jul 29, 2003·7 cites·13 claims
- 3752US2020266378A1Light-emitting elementSUMITOMO CHEMICAL CO·Filed 2018·Application pending·0 cites
- 3850US8740376B2Recording apparatusSEIKO EPSON CORP·Filed 2012·Granted Jun 3, 2014·0 cites·5 claims
- 3950US6958959B2Apparatus for reproducing information based on the type of compression method used in compressing the informationPIONEER CORP·Filed 2001·Granted Oct 25, 2005·1 cites·6 claims
- 4050US6801482B1Information record/reproduction unit and method thereofPIONEER ELECTRONIC CORP·Filed 1999·Granted Oct 5, 2004·9 cites·5 claims
- 4149US7369464B2Editing device capable of changing the displaying mode of management informationPIONEER CORP·Filed 2004·Granted May 6, 2008·0 cites·3 claims
- 4249US7187628B2Editing device capable of imparting group management information to each recording trackPIONEER CORP·Filed 2004·Granted Mar 6, 2007·0 cites·7 claims
- 4348US7327641B2Editing device capable of displaying logical positions of tracksPIONEER CORP·Filed 2004·Granted Feb 5, 2008·0 cites·2 claims
- 4448USD517596SCutting device for roll paperSEIKO EPSON CORP·Filed 2003·Granted Mar 21, 2006·6 cites·1 claims
- 4548US2023134165A1Composition and light emitting device containing the sameSUMITOMO CHEMICAL CO·Filed 2021·Application pending·0 cites
- 4647US11476427B2π-conjugated boron compound, electronic device, and methods respectively for producing triarylborane and intermediate thereofKONICA MINOLTA INC·Filed 2017·Granted Oct 18, 2022·0 cites·4 claims
- 4746US2015118507A1Transparent electrode, electronic device, and organic electroluminescence elementKONICA MINOLTA INC·Filed 2013·Application pending·0 cites
- 4845USD667871SPrinterSUZUKI WATARU·Filed 2011·Granted Sep 25, 2012·5 cites·1 claims
- 4945US2014338750A1Organic photoelectric conversion elementKONICA MINOLTA INC·Filed 2012·Application pending·0 cites
- 5044US11437590B2Organic electroluminescence element material, organic electroluminescence element, display apparatus and illumination apparatusKONICA MINOLTA INC·Filed 2017·Granted Sep 6, 2022·0 cites·7 claims
Showing the top 50 of 69 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →