Inventor · disambiguated record
Yasumasa Sawai
Also filed as: SAWAI YASUMASA
50 granted patents·8 pending applications·702 citations·filing 1996–2019
98Inventor score
Files withMINOLTA CO LTD27KONICA MINOLTA OPTO INC11KONICA MINOLTA INC9SAWAI YASUMASA6IMAOKA MASAYUKI1
Top patents by PatentIndex Score
58 records- 0197US6467911B1Projector and lamp unitMINOLTA CO LTD·Filed 1999·Granted Oct 22, 2002·94 cites·22 claims
- 0297US6343862B1Projecting image display deviceMINOLTA CO LTD·Filed 1999·Granted Feb 5, 2002·87 cites·45 claims
- 0393US5967635APolarized beam splitter and an illumination optical system and a projector provided with a polarized beam splitterMINOLTA CO LTD·Filed 1998·Granted Oct 19, 1999·42 cites·45 claims
- 0492US6624862B1Display optical apparatus having a rotary compensator to improve display contrastMINOLTA CO LTD·Filed 2000·Granted Sep 23, 2003·54 cites·21 claims
- 0590US6347014B1Illumination optical system and projection-type image display apparatusMINOLTA CO LTD·Filed 1999·Granted Feb 12, 2002·31 cites·17 claims
- 0689US7530697B2Illumination optics and image projecting apparatus having thereofKONICA MINOLTA OPTO INC·Filed 2006·Granted May 12, 2009·12 cites·18 claims
- 0788US9874806B2Color splitting/combining prism, and optical system and projector therewithKONICA MINOLTA INC·Filed 2016·Granted Jan 23, 2018·5 cites·20 claims
- 0886US7269843B2Broadcasting system and media playerMINOLTA CO LTD·Filed 2001·Granted Sep 11, 2007·28 cites·7 claims
- 0986US6190013B1Polarized beam splitter and an illumination optical system and a projector provided with a polarized beam splitterMINOLTA CO LTD·Filed 1999·Granted Feb 20, 2001·22 cites·10 claims
- 1085US7518803B2Dichroic prism, and prism unit and image projection apparatus employing sameKONICA MINOLTA OPTO INC·Filed 2006·Granted Apr 14, 2009·17 cites·14 claims
- 1183US6264331B1Image projectorMINOLTA CO LTD·Filed 1998·Granted Jul 24, 2001·22 cites·11 claims
- 1281US7920331B2Anamorphic converter and image projection systemKONICA MINOLTA OPTO INC·Filed 2009·Granted Apr 5, 2011·6 cites·17 claims
- 1381US6561655B2ProjectorMINOLTA CO LTD·Filed 2001·Granted May 13, 2003·16 cites·8 claims
- 1480US8696133B2Projection optical system and image projecting deviceIMAOKA MASAYUKI·Filed 2009·Granted Apr 15, 2014·13 cites·25 claims
- 1578US7784950B2Image projecting apparatus having variable stopKONICA MINOLTA OPTO INC·Filed 2006·Granted Aug 31, 2010·5 cites·21 claims
- 1677US6478431B1Illumination system and projectorMINOLTA CO LTD·Filed 2000·Granted Nov 12, 2002·15 cites·27 claims
- 1776US7943893B2Illumination optical system and image projection device having a rod integrator uniformizing spatial energy distribution of diffused illumination beamKONICA MINOLTA OPTO INC·Filed 2008·Granted May 17, 2011·4 cites·20 claims
- 1876US6089720AIlluminating optical apparatusMINOLTA CO LTD·Filed 1998·Granted Jul 18, 2000·13 cites·11 claims
- 1975US8770760B2Image projection deviceSAWAI YASUMASA·Filed 2009·Granted Jul 8, 2014·4 cites·12 claims
- 2074US7850314B2Light-emitting module and image projection apparatus using sameKONICA MINOLTA OPTO INC·Filed 2007·Granted Dec 14, 2010·4 cites·10 claims
- 2171US6809780B2Projector with fan controllerMINOLTA CO LTD·Filed 2001·Granted Oct 26, 2004·10 cites·17 claims
- 2270US10324362B2Optical unit and projector therewithKONICA MINOLTA INC·Filed 2018·Granted Jun 18, 2019·1 cites·14 claims
- 2368US6193376B1Display apparatusMINOLTA CO LTD·Filed 1999·Granted Feb 27, 2001·34 cites·38 claims
- 2466US8408709B2Illumination optical system and projectorSAWAI YASUMASA·Filed 2010·Granted Apr 2, 2013·2 cites·10 claims
- 2566US6429975B1Illumination optical system and projector using sameMINOLTA CO LTD·Filed 2000·Granted Aug 6, 2002·10 cites·15 claims
- 2664US9866806B2Prism unit and projectorKONICA MINOLTA INC·Filed 2015·Granted Jan 9, 2018·1 cites·5 claims
- 2764US6183093B1Light source device and an illuminator and an image projectorMINOLTA CO LTD·Filed 1998·Granted Feb 6, 2001·27 cites·22 claims
- 2863US9010944B2Projection type image display apparatusMAEDA NORIO·Filed 2009·Granted Apr 21, 2015·2 cites·4 claims
- 2963US8998423B2Image Projection apparatusSAWAI YASUMASA·Filed 2011·Granted Apr 7, 2015·1 cites·7 claims
- 3062US10775684B2Optical unit and projector therewithKONICA MINOLTA INC·Filed 2019·Granted Sep 15, 2020·0 cites·6 claims
- 3162US7066609B2Projection-type display apparatusKONICA MINOLTA OPTO INC·Filed 2003·Granted Jun 27, 2006·5 cites·25 claims
- 3256US6331879B1Liquid crystal projector with an illumination optical systemMINOLTA CO LTD·Filed 1996·Granted Dec 18, 2001·19 cites·29 claims
- 3355US6176583B1Polarization conversion dichroic mirror and a liquid crystal projectorMINOLTA CO LTD·Filed 1999·Granted Jan 23, 2001·18 cites·15 claims
- 3454US8228443B2Video projection deviceSAWAI YASUMASA·Filed 2008·Granted Jul 24, 2012·0 cites·16 claims
- 3554US2001044754A1Information providing system, information providing method, and display control methodMINOLTA CO LTD·Filed 2001·Application pending·0 cites
- 3654US2007300283A1Broadcasting system and media playerMINOLTA CO LTD·Filed 2007·Application pending·0 cites
- 3752US9612516B2Projection type image display apparatusKONICA MINOLTA INC·Filed 2015·Granted Apr 4, 2017·0 cites·4 claims
- 3851US6091550AOptical system for use in an image projectorMINOLTA CO LTD·Filed 1999·Granted Jul 18, 2000·15 cites·22 claims
- 3950US6188524B1Optical system for use in an image projectorMINOLTA CO LTD·Filed 1999·Granted Feb 13, 2001·14 cites·29 claims
- 4049US8159123B2Light emitting device, light-emitting module, lighting apparatus, and image projection apparatusKONNO KENJI·Filed 2007·Granted Apr 17, 2012·0 cites·8 claims
- 4149US2008259285A1Illumination optical system and image projection deviceKONICA MINOLTA OPTO INC·Filed 2008·Application pending·0 cites
- 4247US5898527ADecentered lens holding structure and its positioning methodMINOLTA CO LTD·Filed 1997·Granted Apr 27, 1999·13 cites·22 claims
- 4346US8061855B2Projection apparatusSAWAI YASUMASA·Filed 2008·Granted Nov 22, 2011·0 cites·20 claims
- 4446US6155685AProjectorMINOLTA CO LTD·Filed 1997·Granted Dec 5, 2000·12 cites·12 claims
- 4545US2001028423A1Liquid crystal projector with an illumination optical systemFiled 2001·Application pending·0 cites
- 4644US8864315B2Image projection apparatusSAWAI YASUMASA·Filed 2012·Granted Oct 21, 2014·0 cites·20 claims
- 4744US7434944B2Image projection apparatusKONICA MINOLTA OPTO INC·Filed 2005·Granted Oct 14, 2008·0 cites·7 claims
- 4842US10145988B2Projection lens and projector with laser beam light sourceKONICA MINOLTA INC·Filed 2016·Granted Dec 4, 2018·0 cites·11 claims
- 4942US9952424B2Image projection apparatusKONICA MINOLTA INC·Filed 2015·Granted Apr 24, 2018·0 cites·12 claims
- 5042US6315415B1Image projectorMINOLTA CO LTD·Filed 1999·Granted Nov 13, 2001·9 cites·25 claims
Showing the top 50 of 58 patent records by PatentIndex Score.
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