Optical camouflage filters
US-12474514-B2 · Nov 18, 2025 · US
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Du Guanglei patents
Du Guanglei is listed as an inventor on 77 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Du Guanglei |
| Total patents | 77 |
| First publication | Oct 20, 2016 |
| Latest publication | Nov 18, 2025 |
Notable patents
Publications ranked by popularity score, then publication date.
Gradient permittivity film
US-12362471-B2 · Jul 15, 2025 · US
Optical systems and optical filters
US-12352991-B2 · Jul 8, 2025 · US
Optical camouflage filters
US-2025130356-A1 · Apr 24, 2025 · US
Optical camouflage filters
US-12216298-B2 · Feb 4, 2025 · US
Optical systems and optical filters
US-2024288614-A1 · Aug 29, 2024 · US
Optical camouflage filter
US-11953709-B2 · Apr 9, 2024 · US
Optical filters complementary angular blocking regions
US-11899230-B2 · Feb 13, 2024 · US
Display device and backlight unit therefor
US-11880057-B2 · Jan 23, 2024 · US
Gradient permittivity film
US-11811139-B2 · Nov 7, 2023 · US
Recent patents
Latest publications not already listed above.
Technique for determining presence of a species in a sample
US-11802792-B2 · Oct 31, 2023 · US
Radar standing wave dampening components and systems
US-11749900-B2 · Sep 5, 2023 · US
Visibly transparent, infrared radiation retroreflective articles
US-11726243-B2 · Aug 15, 2023 · US
Optical system with switchable diffuser
US-11708962-B2 · Jul 25, 2023 · US
Angularly and spectrally selective detector and light source systems
US-11686891-B2 · Jun 27, 2023 · US
Backlights including patterned reflectors
US-2023161197-A1 · May 25, 2023 · US
Display devices with tiled components
US-2023142417-A1 · May 11, 2023 · US
Spectrally selective retroreflective system
US-11640019-B2 · May 2, 2023 · US
Optical films and systems including the same
US-11619771-B2 · Apr 4, 2023 · US
Device optical window camouflage
US-11525949-B2 · Dec 13, 2022 · US
Display device and backlight unit therefor
US-2022308277-A1 · Sep 29, 2022 · US
Color compensating optical filters having low refractive index layer
US-11448808-B2 · Sep 20, 2022 · US
Optical filters complementary angular blocking regions
US-2022276421-A1 · Sep 1, 2022 · US
Optical system with switchable diffuser
US-2022214027-A1 · Jul 7, 2022 · US
Optical filters complementary angular blocking regions
US-11366257-B2 · Jun 21, 2022 · US
Optical camouflage filter
US-11360248-B2 · Jun 14, 2022 · US
Optical camouflage filters
US-2022146725-A1 · May 12, 2022 · US
Retroreflecting article including retarder
US-11300716-B2 · Apr 12, 2022 · US
Optical camouflage filter
US-2022075107-A1 · Mar 10, 2022 · US
Optical camouflage filters
US-11269121-B2 · Mar 8, 2022 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| 3M Innovative Properties Co | 56 |
| 3M Innovative Properties Company | 17 |
| Corning Inc | 4 |
| Corning Prec Materials Co Ltd | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.