Inventor · disambiguated record
Takehiro Koyama
Also filed as: KOYAMA TAKEHIRO
14 granted patents·2 pending applications·46 citations·filing 2002–2019
89Inventor score
Top patents by PatentIndex Score
16 records- 0175US8044898B2LED display apparatus having a column and row controllerNAGANO KEIKI CO LTD·Filed 2007·Granted Oct 25, 2011·3 cites·12 claims
- 0275US6736513B2Projection type image display apparatusCANON KK·Filed 2002·Granted May 18, 2004·22 cites·14 claims
- 0371US7868963B2Optical modulation element unit, projection optical unit, and image projection apparatusCANON KK·Filed 2006·Granted Jan 11, 2011·3 cites·8 claims
- 0470US9091910B2Image projectorKOYAMA TAKEHIRO·Filed 2011·Granted Jul 28, 2015·2 cites·6 claims
- 0569US7961269B2Optical modulation element unit, projection optical unit, and image projection apparatusCANON KK·Filed 2009·Granted Jun 14, 2011·2 cites·5 claims
- 0667US6919992B2Color separating-combining optical system, image display optical system, and projection image display apparatusCANON KK·Filed 2002·Granted Jul 19, 2005·9 cites·39 claims
- 0765US7158308B2Color separating-combining optical system, image display optical system, and projection image display apparatusCANON KK·Filed 2005·Granted Jan 2, 2007·3 cites·8 claims
- 0859US10620513B2Projection type display apparatusCANON KK·Filed 2019·Granted Apr 14, 2020·0 cites·11 claims
- 0953US9618831B2Image projectorCANON KK·Filed 2015·Granted Apr 11, 2017·0 cites·6 claims
- 1050US8724241B2Prism unit and a projection image display apparatusKOYAMA TAKEHIRO·Filed 2012·Granted May 13, 2014·0 cites·12 claims
- 1148US8233227B2Prism unit and a projection image display apparatusKOYAMA TAKEHIRO·Filed 2008·Granted Jul 31, 2012·0 cites·8 claims
- 1244US2020004030A1Projection display apparatusCANON KK·Filed 2019·Application pending·0 cites
- 1343US8888293B2Image projection apparatus having an insertable and extractable optical elementKOYAMA TAKEHIRO·Filed 2012·Granted Nov 18, 2014·0 cites·4 claims
- 1441US9726884B2Displaying apparatus unit and projection type displaying apparatusCANON KK·Filed 2015·Granted Aug 8, 2017·0 cites·8 claims
- 1540US2011096301A1Image projection apparatus with shutter unitCANON KK·Filed 2010·Application pending·0 cites
- 1635USD854656SFluid controllerNAGANO KEIKI CO LTD·Filed 2016·Granted Jul 23, 2019·2 cites·1 claims
Join the waitlist — get patent alerts
Get an alert when Takehiro Koyama files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →