Inventor
WALTERS ROBERT W
US54 patents
⚠️ This page may combine multiple inventors who share the name “WALTERS ROBERT W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
UNIVERSAL DISPLAY CORP
20 patentsUS6916554B2Jul 12, 2005
Organic light emitting materials and devices
UNIVERSAL DISPLAY CORP152 citations99
US7915415B2Mar 29, 2011
Metal complexes of cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1′,2′-c]quinazoline ligands and isoelectronic and benzannulated analogs thereof
UNIVERSAL DISPLAY CORP21 citations96
US7011897B2Mar 14, 2006
Organic light emitting materials and devices
UNIVERSAL DISPLAY CORP27 citations93
US9548462B2Jan 17, 2017
Organic electroluminescent materials and devices
UNIVERSAL DISPLAY CORP13 citations92
US8691988B2Apr 8, 2014
Metal complexes of cyclometallated imidazo (1,2-f) phenanthridine (1,2-a:1′, 2′-c),quinazoline ligands and isoelectronic and benzannulated analogs thereof
UNIVERSAL DISPLAY CORP10 citations92
US7902374B2Mar 8, 2011
Stability OLED materials and devices
UNIVERSAL DISPLAY CORP19 citations92
US10403831B2Sep 3, 2019
Organic electroluminescent materials and devices
UNIVERSAL DISPLAY CORP3 citations84
US10381579B2Aug 13, 2019
Stability OLED materials and devices
UNIVERSAL DISPLAY CORP7 citations84
US10158090B2Dec 18, 2018
Organic electroluminescent materials and devices
UNIVERSAL DISPLAY CORP4 citations84
US9893306B2Feb 13, 2018
Organic electroluminescent materials and devices
UNIVERSAL DISPLAY CORP4 citations84
US9722193B2Aug 1, 2017
Organic electroluminescent materials and devices
UNIVERSAL DISPLAY CORP4 citations84
US9281483B2Mar 8, 2016
Organic electroluminescent materials and devices
UNIVERSAL DISPLAY CORP5 citations84
US8383249B2Feb 26, 2013
Complexes with tridentate ligands
UNIVERSAL DISPLAY CORP13 citations84
US6858327B2Feb 22, 2005
Organic light emitting materials and devices
UNIVERSAL DISPLAY CORP12 citations84
US9065063B2Jun 23, 2015
Metal complexes of cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1′,2′-c]quinazoline ligands and isoelectronic and benzannulated analogs thereof
UNIVERSAL DISPLAY CORP2 citations74
US11404650B2Aug 2, 2022
Stability OLED materials and devices
UNIVERSAL DISPLAY CORP2 citations73
US12171138B2Dec 17, 2024
Organic electroluminescent materials and devices
UNIVERSAL DISPLAY CORP0 citations62
US10978649B2Apr 13, 2021
Organic electroluminescent materials and devices
UNIVERSAL DISPLAY CORP0 citations62
US10749121B2Aug 18, 2020
Organic electroluminescent materials and devices
UNIVERSAL DISPLAY CORP0 citations52
US8889864B2Nov 18, 2014
Metal complexes of cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1′,2′-c]quinazoline ligands and isoelectronic and benzannulated analogs thereof
UNIVERSAL DISPLAY CORP0 citations52
TRANSITIONS OPTICAL INC
8 patentsUS6150430ANov 21, 2000
Process for adhering a photochromic coating to a polymeric substrate
TRANSITIONS OPTICAL INC271 citations99
US6025026AFeb 15, 2000
Process for producing an adherent polymeric layer on polymeric substrates and articles produced thereby
TRANSITIONS OPTICAL INC297 citations99
US6555028B2Apr 29, 2003
Polymeric matrix compatibilized naphthopyrans
TRANSITIONS OPTICAL INC265 citations98
US7262295B2Aug 28, 2007
Indeno-fused photochromic naphthopyrans, naphthols and photochromic articles
TRANSITIONS OPTICAL INC55 citations95
US7557208B2Jul 7, 2009
Naphthols useful for preparing indeno-fused photochromic naphthopyrans
TRANSITIONS OPTICAL INC21 citations92
US7166357B2Jan 23, 2007
Photochromic articles that activate behind ultraviolet radiation blocking transparencies and methods for preparation
TRANSITIONS OPTICAL INC52 citations92
US10501477B2Dec 10, 2019
Photochromic thienochromene compounds
TRANSITIONS OPTICAL INC2 citations70
US7517982B2Apr 14, 2009
Naphthols useful for preparing indeno-fused photochromic naphthopyrans
TRANSITIONS OPTICAL INC1 citations51
PPG IND OHIO INC
7 patentsUS6602603B2Aug 5, 2003
Poly(meth)acrylic photochromic coating
PPG IND OHIO INC203 citations99
US6436525B1Aug 20, 2002
Polyanhydride photochromic coating composition and photochromic articles
PPG IND OHIO INC155 citations99
US6268055B1Jul 31, 2001
Photochromic epoxy resin coating composition and articles having such a coating
PPG IND OHIO INC237 citations99
US6187444B1Feb 13, 2001
Photochromic polyurethane coating and articles having such a coating
PPG IND OHIO INC357 citations96
US7368072B2May 6, 2008
Photochromic contact lenses and methods of manufacturing
PPG IND OHIO INC29 citations91
US8734033B2May 27, 2014
Optical mechanism with indexing stage with at least one fixed diameter apodized aperture and method of making same
PPG IND OHIO INC14 citations83
US8373919B2Feb 12, 2013
Optical element having an apodized aperture
PPG IND OHIO INC9 citations83
TRANSITIONS OPTICAL LTD
6 patentsUS12404448B2Sep 2, 2025
Dihydroquinoline photochromic compounds
TRANSITIONS OPTICAL LTD0 citations61
US12247035B2Mar 11, 2025
Articles comprising indolenaphthopyrans
TRANSITIONS OPTICAL LTD0 citations61
US11518751B2Dec 6, 2022
Photochromic indeno-fused naphthopyran compounds with reduced temperature dependence
TRANSITIONS OPTICAL LTD0 citations58
US12344617B2Jul 1, 2025
Indolonaphthopyrans
TRANSITIONS OPTICAL LTD0 citations50
US11897894B2Feb 13, 2024
Indolenaphthopyrans
TRANSITIONS OPTICAL LTD0 citations50
US11746283B2Sep 5, 2023
Silole and germole fused ring photochromic compounds
TRANSITIONS OPTICAL LTD0 citations49
LIN CHUN
1 patentBEERS SCOTT
1 patentTRANSITION OPTICAL INC
1 patentBANCROFT KEVIN E
1 patentBOWLES STEVEN E
1 patentCONTAINER EQUIPMENT CORP
1 patentWALTERS ROBERT W
1 patentLU YUNYI
1 patentKNOWLES DAVID B
1 patentShowing the top 50 of 54 patents by PatentIndex Score.