Inventor
DU GUANGLEI
US37 patents
⚠️ This page may combine multiple inventors who share the name “DU GUANGLEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
3M INNOVATIVE PROPERTIES CO
19 patentsUS11054556B2Jul 6, 2021
Optical camouflage filters
3M INNOVATIVE PROPERTIES CO7 citations83
US11269121B2Mar 8, 2022
Optical camouflage filters
3M INNOVATIVE PROPERTIES CO4 citations82
US9575352B2Feb 21, 2017
Addressable switchable transparent display
3M INNOVATIVE PROPERTIES CO14 citations82
US10008164B2Jun 26, 2018
Variable viewing angle optical systems
3M INNOVATIVE PROPERTIES CO8 citations81
US10598349B2Mar 24, 2020
Lighting component including switchable diffuser
3M INNOVATIVE PROPERTIES CO2 citations73
US11360248B2Jun 14, 2022
Optical camouflage filter
3M INNOVATIVE PROPERTIES CO4 citations72
US11300716B2Apr 12, 2022
Retroreflecting article including retarder
3M INNOVATIVE PROPERTIES CO3 citations72
US11016229B2May 25, 2021
Optical filter
3M INNOVATIVE PROPERTIES CO3 citations71
US10711182B2Jul 14, 2020
Photochromic articles containing a polyoxometalate and methods of making and using same
3M INNOVATIVE PROPERTIES CO6 citations71
US11204456B2Dec 21, 2021
Optical camouflage filter
3M INNOVATIVE PROPERTIES CO3 citations69
US11448808B2Sep 20, 2022
Color compensating optical filters having low refractive index layer
3M INNOVATIVE PROPERTIES CO0 citations62
US11366257B2Jun 21, 2022
Optical filters complementary angular blocking regions
3M INNOVATIVE PROPERTIES CO0 citations62
US11163099B2Nov 2, 2021
Spectrally selective light control film
3M INNOVATIVE PROPERTIES CO0 citations62
US11187576B2Nov 30, 2021
Optical filters having spatially variant microreplicated layers
3M INNOVATIVE PROPERTIES CO0 citations60
US11009637B2May 18, 2021
Optical stack
3M INNOVATIVE PROPERTIES CO1 citations58
US10348239B2Jul 9, 2019
Multi-layered solar cell device
3M INNOVATIVE PROPERTIES CO1 citations58
US10801699B2Oct 13, 2020
Optical device switchable diffuser
3M INNOVATIVE PROPERTIES CO0 citations52
US10429037B2Oct 1, 2019
Optical device including switchable diffuser
3M INNOVATIVE PROPERTIES CO0 citations52
US9921345B2Mar 20, 2018
Optical systems having variable viewing angles
3M INNOVATIVE PROPERTIES CO0 citations42
3M INNOVATIVE PROPERTIES COMPANY
15 patentsUS12216298B2Feb 4, 2025
Optical camouflage filters
3M INNOVATIVE PROPERTIES COMPANY2 citations74
US11811139B2Nov 7, 2023
Gradient permittivity film
3M INNOVATIVE PROPERTIES COMPANY2 citations72
US11749900B2Sep 5, 2023
Radar standing wave dampening components and systems
3M INNOVATIVE PROPERTIES COMPANY2 citations72
US11619771B2Apr 4, 2023
Optical films and systems including the same
3M INNOVATIVE PROPERTIES COMPANY2 citations72
US11899230B2Feb 13, 2024
Optical filters complementary angular blocking regions
3M INNOVATIVE PROPERTIES COMPANY0 citations62
US11686891B2Jun 27, 2023
Angularly and spectrally selective detector and light source systems
3M INNOVATIVE PROPERTIES COMPANY1 citations62
US11640019B2May 2, 2023
Spectrally selective retroreflective system
3M INNOVATIVE PROPERTIES COMPANY0 citations62
US12474514B2Nov 18, 2025
Optical camouflage filters
3M INNOVATIVE PROPERTIES COMPANY0 citations60
US12352991B2Jul 8, 2025
Optical systems and optical filters
3M INNOVATIVE PROPERTIES COMPANY0 citations60
US11802792B2Oct 31, 2023
Technique for determining presence of a species in a sample
3M INNOVATIVE PROPERTIES COMPANY0 citations60
US11525949B2Dec 13, 2022
Device optical window camouflage
3M INNOVATIVE PROPERTIES COMPANY0 citations60
US11953709B2Apr 9, 2024
Optical camouflage filter
3M INNOVATIVE PROPERTIES COMPANY0 citations59
US11726243B2Aug 15, 2023
Visibly transparent, infrared radiation retroreflective articles
3M INNOVATIVE PROPERTIES COMPANY0 citations58
US11708962B2Jul 25, 2023
Optical system with switchable diffuser
3M INNOVATIVE PROPERTIES COMPANY0 citations52
US12362471B2Jul 15, 2025
Gradient permittivity film
3M INNOVATIVE PROPERTIES COMPANY0 citations51