Inventor
TSUBATA YOSHIAKI
JP23 patents
⚠️ This page may combine multiple inventors who share the name “TSUBATA YOSHIAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO CHEMICAL CO
19 patentsUS6830832B2Dec 14, 2004
Polymer compound and polymer light-emitting device using the same
SUMITOMO CHEMICAL CO22 citations92
US6696180B2Feb 24, 2004
Polymeric fluorescent substance, production method thereof, and polymer light-emitting device using the same
SUMITOMO CHEMICAL CO25 citations92
US6444334B1Sep 3, 2002
Polymeric fluorescent substance and polymer light-emitting device using the same
SUMITOMO CHEMICAL CO55 citations92
US6720091B2Apr 13, 2004
Polymeric fluorescent substance, polymeric fluorescent substance and polymer light-emitting device using the same
SUMITOMO CHEMICAL CO18 citations84
US7208567B2Apr 24, 2007
Polymer compound and polymer light emitting device using the same
SUMITOMO CHEMICAL CO11 citations83
US7255936B2Aug 14, 2007
Polymeric fluorescent substance and polymer light-emitting device using the same
SUMITOMO CHEMICAL CO8 citations74
US7772360B2Aug 10, 2010
Polymer compound and polymer light-emitting device using the same
SUMITOMO CHEMICAL CO6 citations72
US7662478B2Feb 16, 2010
Polymer and polymer light-emitting device using the same
SUMITOMO CHEMICAL CO2 citations62
US5866035AFeb 2, 1999
Liquid crystal mixture and liquid crystal device comprising the same
SUMITOMO CHEMICAL CO5 citations62
US5762825AJun 9, 1998
Liquid crystal mixture and liquid crystal device comprising the same
SUMITOMO CHEMICAL CO3 citations62
US5662828ASep 2, 1997
Compound having unsaturated side chain, process for preparing the same, liquid crystalline polymer prepared from the same, liquid crystal mixture and display element
SUMITOMO CHEMICAL CO5 citations62
US5554317ASep 10, 1996
Compound having unsaturated side chain, process for preparing the same, liquid crystalline polymer prepared from the same, liquid crystal mixture and display element
SUMITOMO CHEMICAL CO3 citations62
US6875895B2Apr 5, 2005
Bis (diphenylvinyl) arene compound
SUMITOMO CHEMICAL CO2 citations61
US10854818B2Dec 1, 2020
Dendrimer compound and organic luminescent device employing the same
SUMITOMO CHEMICAL CO0 citations52
US9966532B2May 8, 2018
Dendrimer compound and organic luminescent device employing the same
SUMITOMO CHEMICAL CO0 citations52
US11339134B2May 24, 2022
Composition and light emitting element device using the same
SUMITOMO CHEMICAL CO0 citations49
US7357990B2Apr 15, 2008
Polymeric fluorescent material, process for producing the same, and polymeric luminiscent element
SUMITOMO CHEMICAL CO0 citations42
US7125930B2Oct 24, 2006
Block copolymer and polymeric luminescent element
SUMITOMO CHEMICAL CO0 citations42
US7701129B2Apr 20, 2010
Polymeric fluorescent substance and polymer light-emitting device using the same
SUMITOMO CHEMICAL CO0 citations41
KITANO MAKOTO
3 patentsUS8728631B2May 20, 2014
Dendrimer compound and organic luminescent device employing the same
KITANO MAKOTO2 citations61
US8519092B2Aug 27, 2013
Polymer compound and polymer light-emitting device using the same
KITANO MAKOTO2 citations60
US8263735B2Sep 11, 2012
Polymer compound and polymer light-emitting device using the same
KITANO MAKOTO4 citations60