Assignee
NITTOH KOGAKU KK
JP·28 granted patents·2 pending applications·469 citations·filing 1998–2014
Top patents by PatentIndex Score
30 records- 0191US6137638AProjection zoom lens system and projector apparatusNITTOH KOGAKU KK·Filed 1999·Granted Oct 24, 2000·111 cites·4 claims
- 0288US7448760B2Optical system and rear projectorNITTOH KOGAKU KK·Filed 2005·Granted Nov 11, 2008·13 cites·15 claims
- 0387US7355573B2Residual image displayNITTOH KOGAKU KK·Filed 2004·Granted Apr 8, 2008·50 cites·9 claims
- 0485USD748842SLighting fixtureNITTOH KOGAKU KK·Filed 2014·Granted Feb 2, 2016·29 cites·1 claims
- 0585US7184219B2Projection lens system and projectorNITTOH KOGAKU KK·Filed 2006·Granted Feb 27, 2007·14 cites·7 claims
- 0683USD748316SLighting fixtureNITTOH KOGAKU KK·Filed 2014·Granted Jan 26, 2016·26 cites·1 claims
- 0782US7057825B2Projection lens system and projectorNITTOH KOGAKU KK·Filed 2004·Granted Jun 6, 2006·16 cites·6 claims
- 0882US6870689B2Projection zoom lens system and projectorNITTOH KOGAKU KK·Filed 2003·Granted Mar 22, 2005·24 cites·8 claims
- 0979US6147812AProjection zoom lens system and projector apparatusNITTOH KOGAKU KK·Filed 1999·Granted Nov 14, 2000·67 cites·6 claims
- 1078US7324289B2Zoom lens systemNITTOH KOGAKU KK·Filed 2007·Granted Jan 29, 2008·8 cites·7 claims
- 1175US7471464B2Lens holder and lens unitNITTOH KOGAKU KK·Filed 2006·Granted Dec 30, 2008·9 cites·17 claims
- 1275US7400455B2Zoom lens system and display apparatusNITTOH KOGAKU KK·Filed 2007·Granted Jul 15, 2008·8 cites·6 claims
- 1375US7170687B2Projection lens system and projectorNITTOH KOGAKU KK·Filed 2005·Granted Jan 30, 2007·7 cites·6 claims
- 1473US7170691B2Zoom lens systemNITTOH KOGAKU KK·Filed 2005·Granted Jan 30, 2007·7 cites·6 claims
- 1572US6587279B2Projection zoom lens system and projectorNITTOH KOGAKU KK·Filed 2001·Granted Jul 1, 2003·15 cites·9 claims
- 1669US7978984B2Data communication unit using light-emitting diode for data communication, and electronic deviceNITTOH KOGAKU KK·Filed 2006·Granted Jul 12, 2011·4 cites·4 claims
- 1765US6972903B2Visual aidNITTOH KOGAKU KK·Filed 2002·Granted Dec 6, 2005·10 cites·7 claims
- 1864US7372430B2Light emitting device and light receiving and emitting driving circuitNITTOH KOGAKU KK·Filed 2004·Granted May 13, 2008·8 cites·12 claims
- 1963US6075653AProjecting zoom lens system and projector apparatusNITTOH KOGAKU KK·Filed 1998·Granted Jun 13, 2000·33 cites·10 claims
- 2062US7400461B2Lens holder and lens unitNITTOH KOGAKU KK·Filed 2005·Granted Jul 15, 2008·3 cites·10 claims
- 2159US7715110B2Zoom lens systemNITTOH KOGAKU KK·Filed 2008·Granted May 11, 2010·2 cites·7 claims
- 2258US7119966B2Projection lens system and projectorNITTOH KOGAKU KK·Filed 2005·Granted Oct 10, 2006·2 cites·3 claims
- 2357US7184220B2Projection zoom lens and projectorNITTOH KOGAKU KK·Filed 2005·Granted Feb 27, 2007·2 cites·6 claims
- 2455US7518805B2Zoom lens systemNITTOH KOGAKU KK·Filed 2007·Granted Apr 14, 2009·1 cites·6 claims
- 2546US8947787B2Lens barrelNITTOH KOGAKU KK·Filed 2013·Granted Feb 3, 2015·0 cites·7 claims
- 2646US7864214B2Signal processing deviceNITTOH KOGAKU KK·Filed 2007·Granted Jan 4, 2011·0 cites·16 claims
- 2746US2016021351A1Optical system and device having optical systemNITTOH KOGAKU KK·Filed 2014·Application pending·0 cites
- 2843US6985304B2Lens system and cameraNITTOH KOGAKU KK·Filed 2004·Granted Jan 10, 2006·0 cites·5 claims
- 2936US7408727B2Lens holder and lens unitNITTOH KOGAKU KK·Filed 2005·Granted Aug 5, 2008·0 cites·19 claims
- 3036US2010013940A1Image processing apparatusNITTOH KOGAKU KK·Filed 2006·Application pending·0 cites
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