Inventor · disambiguated record
Keiji Yuyama
Also filed as: YUYAMA KEIJI
19 granted patents·1 pending application·168 citations·filing 2003–2020
94Inventor score
Technology areasH04N
Top patents by PatentIndex Score
20 records- 0191USD491375SChair-type massagerSANYO ELECTRIC CO·Filed 2003·Granted Jun 15, 2004·47 cites·1 claims
- 0270USD822752SProjectorPANASONIC IP MAN CO LTD·Filed 2017·Granted Jul 10, 2018·12 cites·1 claims
- 0366USD590065SElectric massagerSANYO ELECTRIC CO·Filed 2007·Granted Apr 7, 2009·15 cites·1 claims
- 0465USD775681SProjectorPANASONIC IP MAN CO LTD·Filed 2016·Granted Jan 3, 2017·10 cites·1 claims
- 0564USD647941SProjectorSANYO ELECTRIC CO·Filed 2010·Granted Nov 1, 2011·13 cites·1 claims
- 0660USD870798SProjectorPANASONIC IP MAN CO LTD·Filed 2018·Granted Dec 24, 2019·7 cites·1 claims
- 0760USD740877SProjectorPANASONIC CORP·Filed 2014·Granted Oct 13, 2015·10 cites·1 claims
- 0857USD710331SRemote controller for projectorPANASONIC CORP·Filed 2014·Granted Aug 5, 2014·9 cites·1 claims
- 0955USD727998SProjectorPANASONIC CORP·Filed 2014·Granted Apr 28, 2015·8 cites·1 claims
- 1053USD727999SProjectorPANASONIC CORP·Filed 2014·Granted Apr 28, 2015·7 cites·1 claims
- 1152US8267530B2Video projectorYUYAMA KEIJI·Filed 2009·Granted Sep 18, 2012·0 cites·11 claims
- 1251USD648366SProjectorSANYO ELECTRIC CO·Filed 2010·Granted Nov 8, 2011·7 cites·1 claims
- 1350USD799579SProjectorPANASONIC IP MAN CO LTD·Filed 2016·Granted Oct 10, 2017·5 cites·1 claims
- 1449USD944882SProjectorPANASONIC IP MAN CO LTD·Filed 2020·Granted Mar 1, 2022·1 cites·1 claims
- 1549US2009273759A1Projection image display apparatusSANYO ELECTRIC CO·Filed 2009·Application pending·0 cites
- 1648USD691188SProjectorYUYAMA KEIJI·Filed 2012·Granted Oct 8, 2013·7 cites·1 claims
- 1743USD730427SProjectorPANASONIC CORP·Filed 2014·Granted May 26, 2015·4 cites·1 claims
- 1842USD901576SProjectorPANASONIC IP MAN CO LTD·Filed 2019·Granted Nov 10, 2020·2 cites·1 claims
- 1936USD688724SProjectorTSUKAHARA TAKASHI·Filed 2012·Granted Aug 27, 2013·4 cites·1 claims
- 2030USD803928SProjectorPANASONIC IP MAN CO LTD·Filed 2016·Granted Nov 28, 2017·0 cites·1 claims
Join the waitlist — get patent alerts
Get an alert when Keiji Yuyama 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 →