Inventor
YOSHIDA TOMOYASU
JP14 patents
⚠️ This page may combine multiple inventors who share the name “YOSHIDA TOMOYASU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO CHEMICAL CO
9 patentsUS6803465B2Oct 12, 2004
Optically active 4-(tert-butoxycarbonyl)piperazine compound, and method for producing the same
SUMITOMO CHEMICAL CO6 citations72
US11424410B2Aug 23, 2022
Light emitting device
SUMITOMO CHEMICAL CO2 citations70
US9267003B2Feb 23, 2016
Polymer compound, composition, and light-emitting device using the same
SUMITOMO CHEMICAL CO7 citations67
US6630598B2Oct 7, 2003
Process for producing N-acylnitroaniline derivative
SUMITOMO CHEMICAL CO2 citations60
US11021568B2Jun 1, 2021
Polymer compound and light emitting device using the same
SUMITOMO CHEMICAL CO1 citations56
US11271166B2Mar 8, 2022
Light emitting device and composition useful for production of same light emitting device
SUMITOMO CHEMICAL CO0 citations49
US7511171B2Mar 31, 2009
Method for producing carboxylic acid compound
SUMITOMO CHEMICAL CO0 citations48
US10654967B2May 19, 2020
Polymer compound and light-emitting element using same
SUMITOMO CHEMICAL CO0 citations39
US9741934B2Aug 22, 2017
Polymer compound and light emitting device using the same
SUMITOMO CHEMICAL CO0 citations37