Inventor · disambiguated record
Ryuta Koizumi
Also filed as: KOIZUMI RYUTA
30 granted patents·10 pending applications·65 citations·filing 2007–2022
95Inventor score
Top patents by PatentIndex Score
40 records- 0192US8300076B2Line head and an image forming apparatus using such a line headNOMURA YUJIRO·Filed 2010·Granted Oct 30, 2012·7 cites·3 claims
- 0288US8274741B2Lens array, an exposure head and an image forming apparatusKOIZUMI RYUTA·Filed 2010·Granted Sep 25, 2012·5 cites·4 claims
- 0388US7733364B2Line head and an image forming apparatus using such a line headSEIKO EPSON CORP·Filed 2007·Granted Jun 8, 2010·8 cites·5 claims
- 0484US7733363B2Line head and image forming device using the sameSEIKO EPSON CORP·Filed 2008·Granted Jun 8, 2010·7 cites·8 claims
- 0581US8194106B2Line head and image forming apparatus using the sameNOMURA YUJIRO·Filed 2009·Granted Jun 5, 2012·5 cites·3 claims
- 0681US8022975B2Line head and image forming apparatus using the sameSEIKO EPSON CORP·Filed 2008·Granted Sep 20, 2011·6 cites·7 claims
- 0776US8194112B2Line head and image forming apparatusSOWA TAKESHI·Filed 2009·Granted Jun 5, 2012·4 cites·8 claims
- 0873US10379284B2Light source device and projectorSEIKO EPSON CORP·Filed 2018·Granted Aug 13, 2019·1 cites·18 claims
- 0972US7916163B2Exposure head, a method of controlling an exposure head and an image forming apparatusSEIKO EPSON CORP·Filed 2008·Granted Mar 29, 2011·3 cites·12 claims
- 1072US7719560B2Line head and imaging apparatus incorporating the sameSEIKO EPSON CORP·Filed 2007·Granted May 18, 2010·3 cites·10 claims
- 1171US10261402B2Light source device and projectorSEIKO EPSON CORP·Filed 2018·Granted Apr 16, 2019·1 cites·20 claims
- 1271US8004549B2Line head and an image forming apparatus using the line headSEIKO EPSON CORP·Filed 2010·Granted Aug 23, 2011·1 cites·3 claims
- 1369US8184140B2Line head and image forming apparatusSOWA TAKESHI·Filed 2009·Granted May 22, 2012·3 cites·6 claims
- 1467US7889222B2Lens array for a line head, a line head and an image forming apparatusSEIKO EPSON CORP·Filed 2009·Granted Feb 15, 2011·2 cites·8 claims
- 1566US8089695B2Line head and image forming apparatus using the sameSOWA TAKESHI·Filed 2008·Granted Jan 3, 2012·4 cites·8 claims
- 1666US7808519B2Line head and an image forming apparatus using the line headSEIKO EPSON CORP·Filed 2007·Granted Oct 5, 2010·2 cites·4 claims
- 1758US11762271B2ProjectorSEIKO EPSON CORP·Filed 2022·Granted Sep 19, 2023·0 cites·9 claims
- 1858US7952601B2Lens array, exposure head, and image forming apparatusSEIKO EPSON CORP·Filed 2009·Granted May 31, 2011·1 cites·11 claims
- 1957US8120635B2Exposure head and an image forming apparatusKOIZUMI RYUTA·Filed 2009·Granted Feb 21, 2012·2 cites·2 claims
- 2056US11703750B2Illuminator and projectorSEIKO EPSON CORP·Filed 2022·Granted Jul 18, 2023·0 cites·10 claims
- 2152US11614680B2Illuminator and projectorSEIKO EPSON CORP·Filed 2021·Granted Mar 28, 2023·0 cites·7 claims
- 2252US7848023B2Lens array, an exposure head and an image forming apparatusSEIKO EPSON CORP·Filed 2009·Granted Dec 7, 2010·0 cites·10 claims
- 2352US2009153643A1Image Forming Device and Image Forming MethodSEIKO EPSON CORP·Filed 2008·Application pending·0 cites
- 2451US11614679B2Light source apparatus and projectorSEIKO EPSON CORP·Filed 2021·Granted Mar 28, 2023·0 cites·8 claims
- 2551US8355185B2Exposure head and image forming apparatusSEIKO EPSON CORP·Filed 2010·Granted Jan 15, 2013·0 cites·8 claims
- 2651US8179413B2Image forming device that detects a moving time of a latent image carrierNOMURA YUJIRO·Filed 2011·Granted May 15, 2012·0 cites·8 claims
- 2750US11366377B2Wavelength conversion element, illumination device, and projectorSEIKO EPSON CORP·Filed 2021·Granted Jun 21, 2022·0 cites·14 claims
- 2850US2009035020A1Linehead and Imaging Apparatus Incorporating the SameSEIKO EPSON CORP·Filed 2008·Application pending·0 cites
- 2949US11336875B2Wavelength conversion element, light source device, and projectorSEIKO EPSON CORP·Filed 2021·Granted May 17, 2022·0 cites·8 claims
- 3049US2008030566A1Line Head and Image Forming Apparatus Using the SameSEIKO EPSON CORP·Filed 2007·Application pending·0 cites
- 3148US2021382383A1Illuminator and projectorSEIKO EPSON CORP·Filed 2021·Application pending·0 cites
- 3247US10845684B2ProjectorSEIKO EPSON CORP·Filed 2018·Granted Nov 24, 2020·0 cites·15 claims
- 3347US8405700B2Exposure head and image forming apparatus with light emitting element emitting light forming first and second diagrams having angleKOIZUMI RYUTA·Filed 2011·Granted Mar 26, 2013·0 cites·5 claims
- 3446US10542241B2ProjectorSEIKO EPSON CORP·Filed 2019·Granted Jan 21, 2020·0 cites·12 claims
- 3546US2010134586A1Exposure Head and Image Forming ApparatusSEIKO EPSON CORP·Filed 2009·Application pending·0 cites
- 3644US2009052943A1Line Head and Image Forming Apparatus Using the SameSEIKO EPSON CORP·Filed 2008·Application pending·0 cites
- 3743US2009185828A1Lens Array, Exposure Head, and Image Forming ApparatusSEIKO EPSON CORP·Filed 2009·Application pending·0 cites
- 3843US2008225107A1Line Head, and an Image Forming Apparatus and an Image Forming Method Using the Line HeadSEIKO EPSON CORP·Filed 2008·Application pending·0 cites
- 3941US2008225108A1Line Head and an Image Forming Apparatus Using the Line HeadSEIKO EPSON CORP·Filed 2008·Application pending·0 cites
- 4037US2011129245A1Exposure head and image forming apparatusSEIKO EPSON CORP·Filed 2010·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →