Assignee
YOKOYAMA NORIMASA
JP·26 granted patents·3 pending applications·29 citations·filing 2007–2012
Top patents by PatentIndex Score
29 records- 0183US8735626B2Method of producing aromatic amino compoundsYOKOYAMA NORIMASA·Filed 2010·Granted May 27, 2014·3 cites·7 claims
- 0278US8252431B2Compound wherein substituted bipyridyl group is connected with pyridoindole ring structure through phenylene group, and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2008·Granted Aug 28, 2012·2 cites·20 claims
- 0377US8168308B2Compound having pyridoindole ring structure having substituted pyridyl group attached thereto, and organic electroluminescence elementYOKOYAMA NORIMASA·Filed 2007·Granted May 1, 2012·4 cites·12 claims
- 0476US8771841B2Organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2009·Granted Jul 8, 2014·1 cites·24 claims
- 0575US9732036B2Compound having carbazole ring structure, and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2010·Granted Aug 15, 2017·2 cites·11 claims
- 0674US9196837B2Compound having indenocarbazole ring structure, and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2011·Granted Nov 24, 2015·3 cites·18 claims
- 0774US8748014B2Compound having a substituted anthracene ring structure and pyridoindole ring structure, and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2010·Granted Jun 10, 2014·3 cites·14 claims
- 0873US8624228B2Compound having pyridoindole ring structure bonded with substituted pyridyl group, and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2009·Granted Jan 7, 2014·1 cites·14 claims
- 0969US9306175B2Organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2010·Granted Apr 5, 2016·2 cites·13 claims
- 1069US9196839B2Compound having triphenylamine structure, and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2011·Granted Nov 24, 2015·1 cites·4 claims
- 1169US8586210B2Compound having substituted anthracene ring structure and pyridoindole ring structure and organic electroluminescence deviceYOKOYAMA NORIMASA·Filed 2009·Granted Nov 19, 2013·3 cites·8 claims
- 1267US10059725B2Compound having triphenylsilyl group and triarylamine structure, and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2009·Granted Aug 28, 2018·1 cites·9 claims
- 1367US8852759B2Compound having acridan ring structure, and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2011·Granted Oct 7, 2014·1 cites·6 claims
- 1462US9564600B2Compound having an indolocarbazole ring structure and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2012·Granted Feb 7, 2017·1 cites·3 claims
- 1562US9005776B2Compound having benzotriazole ring structure and organic electroluminescent elementYOKOYAMA NORIMASA·Filed 2010·Granted Apr 14, 2015·1 cites·15 claims
- 1655US2014225100A1Organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2012·Application pending·0 cites
- 1754US8722209B2Compound having pyridoindole ring structure having substituted pyridyl group attached thereto, and organic electroluminescence elementYOKOYAMA NORIMASA·Filed 2012·Granted May 13, 2014·0 cites·12 claims
- 1852US8642189B2Substituted bipyridyl compound and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2009·Granted Feb 4, 2014·0 cites·11 claims
- 1951US9444055B2Organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2012·Granted Sep 13, 2016·0 cites·6 claims
- 2050US8927119B2Compound having substituted anthracene ring structure and pyridoindole ring structure, and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2010·Granted Jan 6, 2015·0 cites·14 claims
- 2150US8716698B2Organic electroluminescent device containing arylamine compound and bipyridyl compoundYOKOYAMA NORIMASA·Filed 2009·Granted May 6, 2014·0 cites·3 claims
- 2249US10541369B2Compound having substituted bipyridyl group and pyridoinodole ring structure, and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2012·Granted Jan 21, 2020·0 cites·8 claims
- 2345US9905770B2Compound having acridan ring structure, and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2012·Granted Feb 27, 2018·0 cites·16 claims
- 2443US9634258B2Compounds having bipyridyl group and carbazole ring, and organic electroluminescent elementYOKOYAMA NORIMASA·Filed 2012·Granted Apr 25, 2017·0 cites·64 claims
- 2542US9306174B2Organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2010·Granted Apr 5, 2016·0 cites·6 claims
- 2641US9553272B2Organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2012·Granted Jan 24, 2017·0 cites·15 claims
- 2741US2013112950A1Compound having carbazole ring structure, and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2011·Application pending·0 cites
- 2841US2012319098A1Substituted pyridyl compound and organic electroluminescent elementYOKOYAMA NORIMASA·Filed 2011·Application pending·0 cites
- 2940US8153277B2Compound having thiadiazole ring structure substituted with pyridyl group and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2007·Granted Apr 10, 2012·0 cites·14 claims
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