Polarization plate and liquid crystal display
US-9507202-B2 · Nov 29, 2016 · US
Polarizer or dye
Polarizer or dye · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C09K2323/031 |
| Official title | Polarizer or dye |
| Display label | Polarizer or dye |
| Total patents | 477 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 56 |
| 2016 | 69 |
| 2017 | 36 |
| 2018 | 40 |
| 2019 | 48 |
| 2020 | 62 |
| 2021 | 54 |
| 2022 | 34 |
| 2023 | 42 |
| 2024 | 16 |
| 2025 | 17 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Composition for polarizing film, polarizing film, method of manufacturing the same, and liquid crystal display provided with the polarizing film
US-9448335-B2 · Sep 20, 2016 · US
Radical curable adhesive composition, and polarizing plate and optical member comprising same
US-2016244646-A1 · Aug 25, 2016 · US
Liquid crystal panel and liquid crystal display
US-9244305-B2 · Jan 26, 2016 · US
Polarizing plate and image display device comprising same
US-2015378063-A1 · Dec 31, 2015 · US
Optical film, polarizing plate and liquid crystal display device
US-2015378211-A1 · Dec 31, 2015 · US
Triphenyl monomers suitable for microstructured optical films
US-9221743-B2 · Dec 29, 2015 · US
Polarizing plate and liquid crystal display including same
US-2015362798-A1 · Dec 17, 2015 · US
Cellulose acylate film, novel compound, polarizing plate and liquid crystal display device
US-2015361036-A1 · Dec 17, 2015 · US
Azo compound and salt thereof, and dye-containing polarizing film comprising the compound or salt
US-9213130-B2 · Dec 15, 2015 · US
Optical film, polarizing plate, and liquid crystal display device
US-2015355397-A1 · Dec 10, 2015 · US
Composition for polarizing film, and polarizing film and display device
US-9207361-B2 · Dec 8, 2015 · US
Azo Compound And Salt Thereof, And Dye-Based Polarizing Film And Polarizing Plate Containing The Same
US-2015337134-A1 · Nov 26, 2015 · US
Radical curing adhesive composition and polarizing plate comprising same
US-2015337180-A1 · Nov 26, 2015 · US
Light-polarizing article and dye dispersion and method for making same
US-9194988-B2 · Nov 24, 2015 · US
Azo Compound, Dye-Based Polarizing Film And Polarizing Plate
US-2015331148-A1 · Nov 19, 2015 · US
Optical film, polarizing plate, and image display device
US-2015323824-A1 · Nov 12, 2015 · US
Polarizing adhesive element, method of manufacturing the same and display apparatus having the same
US-9164312-B2 · Oct 20, 2015 · US
Optical film, and polarizing plate and liquid crystal display device using same
US-9151870-B2 · Oct 6, 2015 · US
Stretched film, polarizing stretched film, method for producing the stretched film, and method for producing the polarizing stretched film
US-9151983-B2 · Oct 6, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K2323/031?
- CPC C09K2323/031 is the Cooperative Patent Classification code for “Polarizer or dye.”
- How many patents are filed under CPC C09K2323/031 (Polarizer or dye)?
- Our database includes 477 publications tagged with this CPC code.
- Is patent activity under CPC C09K2323/031 growing?
- Publication counts under this code: 16 in 2024 vs 17 in 2025 (latest complete years).