Optical sheet and optical component
US-12442954-B2 · Oct 14, 2025 · US
This page is not indexed by search engines while we improve data quality.
from a coupling component"D" containing a directive hydroxyl group
from a coupling component"D" containing a directive hydroxyl group · 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 | C09B31/20 |
| Official title | from a coupling component"D" containing a directive hydroxyl group |
| Display label | from a coupling component"D" containing a directive hydroxyl group |
| Total patents | 15 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 3 |
| 2018 | 2 |
| 2019 | 3 |
| 2020 | 1 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Azo compound or salt thereof, and dye-based polarizing film and dye-based polarizing plate containing same
US-12098287-B2 · Sep 24, 2024 · US
Anisotropic light absorption film and laminate
US-12085742-B2 · Sep 10, 2024 · US
Optical sheet and optical component
US-2023011467-A1 · Jan 12, 2023 · US
Azo Compound Or Salt Thereof, And Dye-Based Polarizing Film And Dye-Based Polarizing Plate Containing Same
US-2022010139-A1 · Jan 13, 2022 · US
Anisotropic light absorption film and laminate
US-2020018879-A1 · Jan 16, 2020 · US
Device for regulating the passage of energy
US-10370592-B2 · Aug 6, 2019 · US
Coloring composition, dichroic dye compound, light absorption anisotropic film, laminate, and image display device
US-2019071571-A1 · Mar 7, 2019 · US
Azo Compound Or Salt Thereof, And Polarizing Film Containing Same
US-2019048194-A1 · Feb 14, 2019 · US
Azo compound, dye-based polarizing film containing same, and polarizing plate
US-10150871-B2 · Dec 11, 2018 · US
Achromatic polarizing plate with high-transmissivity and high-degree of polarization
US-10126468-B2 · Nov 13, 2018 · US
Device for regulating the passage of energy
US-2017267929-A1 · Sep 21, 2017 · US
Azo Compound, Dye-Based Polarizing Film Containing Same, And Polarizing Plate
US-2017210902-A1 · Jul 27, 2017 · US
Achromatic Polarizing Plate With High-Transmissivity And High-Degree Of Polarization
US-2017153361-A1 · Jun 1, 2017 · US
Azo dyes
US-9023118-B2 · May 5, 2015 · US