Inventor · disambiguated record
Akira Nagumo
Also filed as: NAGUMO AKIRA
61 granted patents·5 pending applications·486 citations·filing 1986–2023
98Inventor score
Top patents by PatentIndex Score
66 records- 0194US6028472ATemperature sensing circuit, driving apparatus, and printerOKI DATA KK·Filed 1998·Granted Feb 22, 2000·97 cites·32 claims
- 0291US7804338B2Drive circuit, light emitting diode head, and image forming apparatusOKI DATA KK·Filed 2008·Granted Sep 28, 2010·11 cites·14 claims
- 0384US8884555B2Light-emitting element array, driving device, and image forming apparatusNAGUMO AKIRA·Filed 2012·Granted Nov 11, 2014·3 cites·16 claims
- 0481US8451306B2Reference voltage generation circuit, drive device, print head, and image forming apparatusNAGUMO AKIRA·Filed 2011·Granted May 28, 2013·3 cites·9 claims
- 0580US8093828B2Drive circuit, light emitting diode head, and image forming apparatusNAGUMO AKIRA·Filed 2009·Granted Jan 10, 2012·5 cites·12 claims
- 0680US7990407B2Drive circuit, light print head, and image forming apparatusOKI DATA KK·Filed 2009·Granted Aug 2, 2011·6 cites·7 claims
- 0779US6603496B2Image recording method and apparatus enlarging isolated dotsOKI DATA KK·Filed 2001·Granted Aug 5, 2003·16 cites·17 claims
- 0878US6529229B2Driving circuit, printed wiring board, and print head with clock inverting circuitsOKI DATA KK·Filed 2001·Granted Mar 4, 2003·19 cites·19 claims
- 0976US7924304B2Light-emitting element array, drive controlling device, recording head, and image forming deviceOKI DATA KK·Filed 2009·Granted Apr 12, 2011·4 cites·25 claims
- 1076US6498616B1Print head having non-volatile memory and means for transmitting correction and inherent dataOKI DATA KK·Filed 2000·Granted Dec 24, 2002·23 cites·27 claims
- 1175US8835974B2Driving device, print head and image forming deviceNAGUMO AKIRA·Filed 2011·Granted Sep 16, 2014·2 cites·13 claims
- 1274US8164944B2Driver circuit and image forming apparatusNAGUMO AKIRA·Filed 2010·Granted Apr 24, 2012·2 cites·12 claims
- 1373US8581946B2Driving device, optical print head and image forming deviceNAGUMO AKIRA·Filed 2011·Granted Nov 12, 2013·2 cites·21 claims
- 1473US7075674B2Image recording apparatusOKI DATA KK·Filed 2001·Granted Jul 11, 2006·18 cites·18 claims
- 1573US6194960B1Driver ICOKI DATA KK·Filed 1999·Granted Feb 27, 2001·43 cites·11 claims
- 1672US8525861B2Drive circuit, light print head, and image forming apparatusNAGUMO AKIRA·Filed 2011·Granted Sep 3, 2013·2 cites·4 claims
- 1771US7923737B2Three-terminal switch array device, combined semiconductor device, and image forming apparatusOKI DATA KK·Filed 2006·Granted Apr 12, 2011·5 cites·15 claims
- 1870US8184139B2Redundance control of temperature compensation for a LED printheadNAGUMO AKIRA·Filed 2008·Granted May 22, 2012·4 cites·16 claims
- 1969US8698864B2Driver apparatus, print head and image forming apparatusNAGUMO AKIRA·Filed 2012·Granted Apr 15, 2014·1 cites·10 claims
- 2069US8258723B2Light-emitting element array, driving device, and image forming apparatusNAGUMO AKIRA·Filed 2009·Granted Sep 4, 2012·2 cites·17 claims
- 2169US7961209B2Integrated circuit that emits light, optical head that incorporates the integrated circuit, and image forming apparatus that uses the optical headOKI DATA KK·Filed 2006·Granted Jun 14, 2011·4 cites·8 claims
- 2268US8390657B2Driver circuit, optical print head, and image forming apparatusNAGUMO AKIRA·Filed 2009·Granted Mar 5, 2013·3 cites·15 claims
- 2368US7821211B2Drive circuit, light emitting diode head, and image forming apparatusOKI DATA KK·Filed 2008·Granted Oct 26, 2010·2 cites·22 claims
- 2467US6535235B1Drive circuit and LED head incorporating the drive circuitOKI DATA KK·Filed 2000·Granted Mar 18, 2003·14 cites·15 claims
- 2567US6400349B1Driving circuit and LED head with constant turn-on timeOKI DATA KK·Filed 1999·Granted Jun 4, 2002·33 cites·18 claims
- 2666US8848012B2Drive device, print head and image forming apparatusNAGUMO AKIRA·Filed 2011·Granted Sep 30, 2014·1 cites·18 claims
- 2765US7806501B2Driving apparatus, LED head and image forming apparatusOKI DATA KK·Filed 2007·Granted Oct 5, 2010·2 cites·12 claims
- 2865US6717604B2Array driving circuit with control voltage adjusted at both ends, and array head using sameOKI DATA KK·Filed 2002·Granted Apr 6, 2004·11 cites·20 claims
- 2965US5892532ANon-impact printer and a print head thereofOKI ELECTRIC IND CO LTD·Filed 1997·Granted Apr 6, 1999·32 cites·11 claims
- 3064US8149259B2Drive device, LED array, LED head, and image forming apparatus provided therewithNAGUMO AKIRA·Filed 2007·Granted Apr 3, 2012·2 cites·11 claims
- 3163US8138681B2Driving circuit, LED head and image forming apparatusNAGUMO AKIRA·Filed 2008·Granted Mar 20, 2012·2 cites·17 claims
- 3261US6388695B1Driving circuit with switching element on static current path, and printer using sameOKI DATA KK·Filed 1999·Granted May 14, 2002·28 cites·13 claims
- 3357US5990920ADriving apparatus with circuits for efficiently transferring and storing compensation dataOKI DATA KK·Filed 1996·Granted Nov 23, 1999·22 cites·20 claims
- 3456US8866866B2Drive circuit, light print head, and image forming apparatusOKI DATA KK·Filed 2013·Granted Oct 21, 2014·0 cites·20 claims
- 3556US2010123691A1Driving circuit, recording head, image forming apparatus, and display deviceOKI DATA KK·Filed 2009·Application pending·0 cites
- 3654US2024280650A1Magnetic detection deviceSHIMADZU CORP·Filed 2023·Application pending·0 cites
- 3754US2024280648A1Magnetic detection deviceSHIMADZU CORP·Filed 2023·Application pending·0 cites
- 3852US8421427B2Reference voltage generation circuit, drive circuit, light emitting diode head, and image forming apparatusNAGUMO AKIRA·Filed 2008·Granted Apr 16, 2013·0 cites·17 claims
- 3952US8400137B2Reference voltage generation circuit, drive circuit, light emitting diode head, and image forming apparatusNAGUMO AKIRA·Filed 2008·Granted Mar 19, 2013·2 cites·24 claims
- 4052US5864253AHigh-speed signal transmission circuit with reduced electromagnetic interferenceOKI DATA KK·Filed 1996·Granted Jan 26, 1999·29 cites·25 claims
- 4150US8723903B2Drive device, LED array, LED head, and image forming apparatus provided therewithNAGUMO AKIRA·Filed 2012·Granted May 13, 2014·0 cites·23 claims
- 4250US4780012APaper feeding control system of automatic paper feederOKI ELECTRIC IND CO LTD·Filed 1986·Granted Oct 25, 1988·7 cites·3 claims
- 4349US9826588B2Light-emission drive circuit and image forming apparatusOKI DATA KK·Filed 2016·Granted Nov 21, 2017·0 cites·17 claims
- 4449US8542262B2Light emitting element array, drive circuit, optical print head, and image forming apparatusNAGUMO AKIRA·Filed 2009·Granted Sep 24, 2013·0 cites·8 claims
- 4549US8284219B2Drive circuit, optical print head, and image forming apparatusNAGUMO AKIRA·Filed 2010·Granted Oct 9, 2012·0 cites·13 claims
- 4648US8106931B2Semiconductor device, print head and image forming apparatusNAGUMO AKIRA·Filed 2008·Granted Jan 31, 2012·0 cites·12 claims
- 4748US5100120ACut-sheet feeder control methodOKI ELECTRIC IND CO LTD·Filed 1989·Granted Mar 31, 1992·7 cites·15 claims
- 4846US8089501B2Light emitting apparatus, optical printhead, and image forming apparatusNAGUMO AKIRA·Filed 2008·Granted Jan 3, 2012·0 cites·8 claims
- 4944US8471884B2Driving device, print head and image forming deviceNAGUMO AKIRA·Filed 2011·Granted Jun 25, 2013·0 cites·10 claims
- 5043US8704862B2Semiconductor composite device, method of manufacturing the same, optical print head and image forming apparatusNAGUMO AKIRA·Filed 2010·Granted Apr 22, 2014·0 cites·20 claims
Showing the top 50 of 66 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →