Assignee
AKIYAMA KOICHI
JP·15 granted patents·1 pending application·106 citations·filing 2008–2012
Top patents by PatentIndex Score
16 records- 0197US8585208B2Light source device and projectorAKIYAMA KOICHI·Filed 2012·Granted Nov 19, 2013·23 cites·18 claims
- 0295US8596795B2ProjectorAKIYAMA KOICHI·Filed 2011·Granted Dec 3, 2013·17 cites·14 claims
- 0393US8628199B2Light source device with a plurality of light sources and a collimating lensAKIYAMA KOICHI·Filed 2011·Granted Jan 14, 2014·18 cites·19 claims
- 0491US9010938B2Projector with multiple different types of illumination devicesAKIYAMA KOICHI·Filed 2011·Granted Apr 21, 2015·13 cites·8 claims
- 0583US8111457B2Method of manufacturing screen and screenAKIYAMA KOICHI·Filed 2009·Granted Feb 7, 2012·7 cites·17 claims
- 0681US8562152B2Collimator lens unit with aspheric surfaces for imparting a luminous flux density distributionAKIYAMA KOICHI·Filed 2010·Granted Oct 22, 2013·4 cites·15 claims
- 0780US9810977B2Solid-state light source device and projector utilizing a plurality of collimator lensesAKIYAMA KOICHI·Filed 2011·Granted Nov 7, 2017·4 cites·11 claims
- 0877US8123211B2Pickup roller lifting and lowering mechanism in paper feeding unit and image forming apparatus including the pickup roller lifting and lowering mechanismAKIYAMA KOICHI·Filed 2009·Granted Feb 28, 2012·5 cites·18 claims
- 0977US8123366B2Light source with truncated ellipsoidal reflectorAKIYAMA KOICHI·Filed 2008·Granted Feb 28, 2012·5 cites·12 claims
- 1076US9488902B2Illuminator and projectorAKIYAMA KOICHI·Filed 2011·Granted Nov 8, 2016·3 cites·19 claims
- 1173US9004692B2Projector having diffusing unit and polarization conversion elementAKIYAMA KOICHI·Filed 2012·Granted Apr 14, 2015·2 cites·15 claims
- 1272US8714747B2Projector having a first light separation optical system and a second light separation optical systemAKIYAMA KOICHI·Filed 2012·Granted May 6, 2014·2 cites·12 claims
- 1371US8179600B2Screen and method of manufacturing screenAKIYAMA KOICHI·Filed 2009·Granted May 15, 2012·3 cites·17 claims
- 1450US8944606B2Projector having color separation optical system with reflecting curved surfaceAKIYAMA KOICHI·Filed 2012·Granted Feb 3, 2015·0 cites·12 claims
- 1546US9285667B2ProjectorAKIYAMA KOICHI·Filed 2012·Granted Mar 15, 2016·0 cites·15 claims
- 1640US2011304095A1Paper feeding apparatus, image forming apparatus, and paper feeding methodAKIYAMA KOICHI·Filed 2011·Application pending·0 cites
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